GB2618518A - A self-loading plastering hawk system - Google Patents
A self-loading plastering hawk system Download PDFInfo
- Publication number
- GB2618518A GB2618518A GB2203094.4A GB202203094A GB2618518A GB 2618518 A GB2618518 A GB 2618518A GB 202203094 A GB202203094 A GB 202203094A GB 2618518 A GB2618518 A GB 2618518A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hawk
- plastering
- compressor
- plaster
- loading
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011505 plaster Substances 0.000 claims abstract description 59
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 239000000654 additive Substances 0.000 claims abstract description 4
- 230000000996 additive effect Effects 0.000 claims abstract description 4
- 241000272184 Falconiformes Species 0.000 claims description 3
- 238000013270 controlled release Methods 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 239000011507 gypsum plaster Substances 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F21/00—Implements for finishing work on buildings
- E04F21/02—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls
- E04F21/06—Implements for applying plaster, insulating material, or the like
- E04F21/08—Mechanical implements
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Nozzles (AREA)
Abstract
A self-loading plastering hawk system 100 having a container 12 for holding plaster, a pump 16 for pumping plaster from the container through a flexible hose 18 to a plastering hawk 20, the hawk having a dorso-ventral through-hole (22; Fig 2) for the delivery of plaster to the hawk surface, and having a trigger 24 on the hawk which controls a compressor 26 which turns the flow of plaster on or off on the basis of the trigger position by selectively operating the pump. The container may be mounted on a wheeled trolley 14. The hawk may be coated with a non-stick additive. The hose may be translucent or transparent. Multiple hoses may be connected, each connected to its own hawk, so that multiple users may use the same system at the same time. The invention is intended to provide a single machine which allows for controlled release of plaster towards a person using a plastering hawk, avoiding spurts and enabling seamless user-controlled fluid flow.
Description
A SELF-LOADING PLASTERING HAWK SYSTEM
FIELD OF THE INVENTION:
This invention relates to the field of electro-mechanical engineering.
Particularly, this invention relates to the field of construction industry.
Specifically, this invention relates to a self-loading plastering hawk system.
BACKGROUND OF THE INVENTION:
Plaster is a building material used for the protective or decorative coating of walls and ceilings and for moulding and casting decorative elements. It may be a smooth (Gypsum) and plaster of Paris Plastering' involves the task of covering a surface with plaster. It is a rather cumbersome task and involves at least a container which contains plaster, a plastering hawk which is a tool to hold a portion of plaster from the container, and a plastering trowel which is used to apply the plaster that is held on the plastering hawk.
Plastering is a cumbersome task.
Typically, delivery of plaster from the container to the hawk is manual which requires the plasterer to repeatedly reach out to the container, probably walking / bending to dig out plaster from such container, apply it to the hawk, and then use the trowel to apply the plaster from the hawk.
There could be chronic health problems associated with the current practices of practices.
Therefore, there is a need for a need to reduce the cumbersome-ness of this job.
OBJECTS OF THE INVENTION: An object of the invention is to provide an ergonomic and user-friendly plastering mechanism.
Another object of the invention is to provide controlled release of plaster towards a person using a plastering hawk.
Yet another object of the invention is to provide a single machine which provides both finish plaster and bonding coat plaster as well as dry wall adhesive.
Still another object of the invention is to provide a machine which aids plastering wherein there is no uncontrollable spurting of plaster.
An additional object of the invention is to provide a machine where there is no undue pressure, in plaster delivery, throughout its delivery mechanism.
SUMMARY OF THE INVENTION:
According to this invention, there is provided a self-loading plastering hawk system comprising: a container configured to hold plaster; a pump configured to pump out the plaster from said container for further use; a plastering hawk coupled to said container by means of a flexible hose, said flexible hose being a conduit allowing transfer of plaster from said container to said plastering hawk, said plastering hawk comprising a dorso-ventral through-hole, in that said flexible hose couples with said plastering hawk at an operative dorsal side of said plastering hawk and plaster flows out of an operative ventral side of said plastering hawk, though said though-hole; and a trigger, located on a handle of said hawk, said trigger enabled with a valve and being connected to said pump, said trigger being located, ergonomically, with respect to said plastering hawk in order to allow a plasterer to control release of plaster onto said plastering hawk vide said trigger's actuation, said trigger being coupled with a compressor configured to turn flow of plaster on or off in consonance with trigger position as controlled by a plasterer so as to enable controlled fluid release of plaster.
In at least an embodiment, said container is a trolley-mounted container, in that, the container sits on a wheeled trolley which can be moved from one place to another; thereby, providing portability to the entire system.
In at least an embodiment a plastering hawk, at its operative dorsal side, comprises a hawk handle which is where said hose couples itself, in that, said though-hole of said plastering hawk being located at an operative top end of said hawk handle.
In at least an embodiment, said plastering hawk's surface is coated with a non-stick additive.
In at least an embodiment, said trigger is coupled to said pump in order to start and stop said pump, said starting and stopping controlled by a trigger-associated valve, by, correspondingly, allowing air supply to said pump for actuation of plaster supply to said plastering hawk, and cutting off air supply to said pump for deactivating said plaster supply to said plastering hawk.
In at least an embodiment, said compressor is an autonomous functioning compressor, said compressor is an autonomous functioning compressor, in that, said compressor configured to stop of its own accord via its fully automated controlled integral pressure switch.
In at least an embodiment, said compressor is an autonomous functioning compressor, in that, said compressor is run by an electric system that sits on a receiver tank which holds its air store such that when air pressure drops, said compressor, automatically, runs in the same fashion as when said trigger is pulled on said plastering hawk.
In at least an embodiment, said compressor is an autonomous functioning compressor, said compressor being run by an electric system that sits on a receiver tank, in that, said compressor comprising a pressure control means configured to allow a plasterer to set a pressure threshold such that, once switched on, builds pressure in the receiver tank up to said preset pressure threshold.
In at least an embodiment, said compressor is an autonomous functioning compressor, said compressor being run by an electric system that sits on a receiver tank, in that, said compressor comprising a pressure control means configured to allow a plasterer to set a pressure threshold such that once the pressure in said receiver tank reaches a preset pressure, an integral pressure switch shuts said compressor off.
In at least an embodiment, said compressor is an autonomous functioning compressor, said compressor being run by an electric system that sits on a receiver tank, in that, said compressor comprising a pressure control means configured to allow a plasterer to set a pressure threshold, said compressor comprising an integral pressure switch having a differential position such that once pressure drops below that differential position said compressor starts again and builds back up to said preset pressure whereupon it stops again until said pressure drops to said differential position whereupon it starts again.
In at least an embodiment, said compressor is a piston pump with compressed air where said compressed air is controlled by said trigger associated with said plastering hawk via an air switch that runs with said hose from said container to said plastering hawk.
In at least an embodiment, said compressor is a piston pump with compressed air where said compressed air is controlled by said trigger associated with said plastering hawk via an electrical switch that runs with said hose from said container to said plastering hawk.
In at least an embodiment, said compressor is an autonomous functioning compressor, in that, said compressor being an air-pressure compressors, in that, for a single hose, pressure being between 3 bar and 7 bar.
In at least an embodiment, said hose is a transparent hose or a translucent hose.
In at least an embodiment, a plurality of hoses is coupled to a single container, each hose being coupled to a corresponding plastering hawk; so as to form a oneto-many configuration of plastering hawks deriving controlled fluid release of plaster from said single container containing plaster.
In at least an embodiment, said pump is located on a follower plate atop said container.
In at least an embodiment, said valve is a start-stop solenoid valve located on said handle of said hawk.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS:
The invention will now be described in relation to the accompanying drawings, in which: FIGURE 1 illustrates a schematic line drawing showing the system of this invention; FIGURE 2 illustrates a close-up view of the hawk and delivery mechanism of the system of this invention; FIGURE 3 illustrates a pump located atop follower plate; and FIGURE 4 illustrates a pneumatic diagram for the working of this invention.
DETAILED DESCRIPTION OF THE ACCOMPANYING DRAWINGS: According to this invention, there is provided a self-loading plastering hawk system (100).
FIGURE 1 illustrates a schematic line drawing showing the system of this invention.
FIGURE 2 illustrates a close-up view of the hawk and delivery mechanism of the system of this invention.
In at least an embodiment, the system comprises a container (12) configured to hold plaster that is either made in this container (12) or is poured into this container (12) from elsewhere. Typically, this container (12) is a trolley-mounted container (12), in that, the container (12) sits on a wheeled trolley (14) which can be moved from one place to another; thereby, providing portability to the entire system. In a preferred embodiment, as seen in Figure 1 of the accompanying drawings, a trolley handle (14a), fixed wheel/s (14b), swiveling wheel's (14c) can be seen. This container (12) may be fixed onto the trolley (14).
In at least an embodiment, the system comprises a pump (16) configured to pump out the plaster from the container (12) for further use. The pump (16) is located on top of a follower plate (27) which sits on top of the container (12) when suction is required. The weight of the pump (16), combined with suction force of the pump (16), forces the follower plate down. The follower plate has a rubber outer ring to enable to fit most size containers (12).
FIGURE 3 illustrates a pump located atop follower plate.
In preferred embodiments, the pump 06) is coaxial with the follower plate (27).
The pump can either be run by 110 volts from sites (of use) or normal residential electricity voltage. The pump is configured to pump the plaster from up to 200ft and through a plurality of hoses connected to the container or pump (12).
In at least an embodiment, the system comprises a plastering hawk (20) coupled to the container (12) by means of a flexible hose (18). The flexible hose (18) is a conduit which allows transfer of plaster from the container (12) to the plastering hawk (20). The plastering hawk's (20) handle has a swivel joint, which interfaces with the flexible hose (18), in order to make it easier for a plasterer to utilize. The plastering hawk (20) comprises a through-hole (22); the posterior side of plastering hawk (20), at the though-hole (22), is where the flexible hose (18) mates / meshes with the plastering hawk (20). The anterior side of the plastering hawk (20), at the though-hole, the plaster (25) pushes through and out onto the plastering hawk (20) for use by a plasterer. The plastering hawk (20), at its anterior side, comprises a hawk handle (19) which is where the hose (18) couples itself The operative top end of this hawk handle is where the through-hole (22) of the plastering hawk (20) is located. The surface of the plastering hawk (20) may be coated with a Teflon-type additive to give it more longevity.
There may be a plurality of hoses (18), extending from a single container (12) pumped by a single pump (16), connected to their corresponding plastering hawks (20); thereby, forming a one-to-many configuration and thereby, allowing a plurality of workers to work a site from a single container (12) of plaster.
In at least an embodiment, the system comprises a trigger (24) associated with a valve (24a), the trigger (24) being located, ergonomically, with respect to the plastering hawk (20) in order to allow a plasterer to control release of plaster onto the plastering hawk (20). Typically, this trigger (24) is coupled with a compressor (26) configured to turn the flow of plaster on or off in consonance with trigger position as controlled by the plasterer. E.g. when the plasterer pulls the trigger (24), the plaster will be delivered directly on to the plastering hawk (20) and there is no need to walk back towards and away from the plaster supply (i.e. the container) for topping up the plastering hawk. Particularly, the compressor (26) is designed to cut out when the plasterer releases the trigger (24); this is to stop any build-up of pressure through the system and also so that the plaster does not keep on arriving at the hawk constantly. Typically, the compressor (26) is run by an electric system that is sitting on a receiver tank which holds its air store. When air pressure drops, the compressor automatically runs as it will when the trigger (24) is pulled on the plastering hawk (20).
Basically, the trigger (24) starts and stops the pump (16) by correspondingly allowing air supply to the pump and cutting off air supply to the pump. The compressor (26) stops of its own accord via its fully automated controlled integral pressure switch.
The trigger (24), when not engaged by the plasterer, cuts the pump (16) off and stops any further pressure build-up of the plaster in the hose; so, there are no uncontrollable spurts of plaster when the pump (16) is engaged again by the plasterer by engaging with the trigger (24). This allows for seamless / fluid flow of plaster from the container (12) to the plastering hawk (20).
The compressor (26) functions in an autonomous manner.
In at least an embodiment, the compressor (26), once switched on, builds pressure in the receiver tank. Once the pressure in the receiver tank reaches a preset pressure, an integral pressure switch shuts the compressor (26) off. The integral pressure switch has a differential position. Once the pressure drops below that differential position the compressor (26) starts again and builds back up to the preset pressure whereupon it will stop again until the pressure drops to the differential position whereupon it will start again. The compressor (26) will function in this manner constantly while the entire system is being utilised.
The hose (18) that the plaster is delivered through is, preferably, a transparent / translucent hose so that one can actually gauge the plaster in the hose (18).
The optimum pressure for at least 1 plasterer is between 3 and 7 bar.
In at least an embodiment, there is also provided a belt with a clip that can keep the hose (18) where desired and to take away any weight from a plasterers arm.
When the plasterer has finished the plastering job, one can clean the system by by simply placing the pump in a bucket of water and forcing the water through; this takes around 10 to 15 seconds to allow clear water to run through so it is now clean and ready to be used again.
The plastering system, of this invention, is configured to do both finish plaster and bonding plaster and as well as a dry wall adhesive.
The system of this invention is based on piston pump compressed air where the compressed air is not a constant but controlled by a trigger associated with the plastering hawk via either an air switch that runs with the hose from container to plastering hawk or electrical connection means. In one other embodiment, the communicable coupling between the trigger and the compressor may be wireless in nature.
FIGURE 4 illustrates a pneumatic diagram for the working of this invention.
The TECHNICAL ADVANCEMENT of this invention lies in providing a single machine which allows for controlled release of plaster towards a person using a plastering hawk; avoiding spurts and enabling seamless / fluid user-controlled flow.
While this detailed description has disclosed certain specific embodiments for illustrative purposes, various modifications will be apparent to those skilled in the art which do not constitute departures from the spirit and scope of the invention as defined in the following claims, and it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the invention and not as a limitation.
Claims (17)
- CLAIMS, I. A self-loading plastering hawk system (100) comprising: - a container (12) configured to hold plaster; - a pump (16) configured to pump out the plaster from said container (12) for further use; - a plastering hawk (20) coupled to said container (12) by means of a flexible hose (18), said flexible hose (18) being a conduit allowing transfer of plaster from said container (12) to said plastering hawk (20), said plastering hawk (20) comprising a dorso-ventral through-hole (22), in that said flexible hose (18) couples with said plastering hawk (20) at an operative dorsal side of said plastering hawk (20) and plaster flows out of an operative ventral side of said plastering hawk (20), through said through-hole (22); and - a trigger (24), located on a handle of said hawk (20), said trigger (24) enabled with a valve and being connected to said pump (16), said trigger (24) being located, ergonomically, with respect to said plastering hawk (20) in order to allow a plasterer to control release of plaster onto said plastering hawk (20) vide said trigger's (24) actuation, said trigger (24) being coupled with a compressor (26) configured to turn flow of plaster on or off in consonance with trigger position as controlled by a plasterer so as to enable controlled fluid release of plaster.
- 2. The self-loading plastering hawk system as claimed in claim 1 wherein, said container (12) being a trolley-mounted container (12), in that, the container (12) sits on a wheeled trolley (14) which can be moved from one place to another; thereby, providing portability to the entire system.
- 3. The self-loading plastering hawk system (100) as claimed in claim I wherein, a plastering hawk (20), at its operative dorsal side, comprises a hawk handle (19) which is where said hose (18) couples itself, in that, said through-hole (22) of said plastering hawk (20) being located at an operative top end of said hawk handle.
- 4. The self-loading plastering hawk system (100) as claimed in claim 1 wherein, said plastering hawk's (20) surface is coated with a non-stick additive.
- 5. The self-loading plastering hawk system (100) as claimed in claim I wherein, said trigger (24) being coupled to said pump ( I 6) in order to start and stop said pump (16), said starting and stopping controlled by a trigger-associated valve (24a), by, correspondingly, allowing air supply to said pump (16) for actuation of plaster supply to said plastering hawk (20), and cutting off air supply to said pump (16) for deactivating said plaster supply to said plastering hawk.
- 6. The self-loading plastering hawk system (100) as claimed in claim 1 wherein, said compressor (26) being an autonomous functioning compressor, in that, said compressor (26) configured to stop of its own accord via its fully automated controlled integral pressure switch.
- 7. The self-loading plastering hawk system (100) as claimed in claim I wherein, said compressor (26) being an autonomous functioning compressor, in that, said compressor (26) being run by an electric system that sits on a receiver tank which holds its air store such that when air pressure drops, said compressor (26), automatically, runs in the same fashion as when said trigger (24) is pulled on said plastering hawk (20).
- 8. The self-loading plastering hawk system (100) as claimed in claim I wherein, said compressor (26) being an autonomous functioning compressor, said compressor (26) being run by an electric system that sits on a receiver tank, in that, said compressor comprising a pressure control means configured to allow a plasterer to set a pressure threshold such that, once switched on, builds pressure in the receiver tank up to said preset pressure threshold.
- 9. The self-loading plastering hawk system (100) as claimed in claim 1 wherein, said compressor (26) being an autonomous functioning compressor, said compressor (26) being run by an electric system that sits on a receiver tank, in that, said compressor comprising a pressure control means configured to allow a plasterer to set a pressure threshold such that once the pressure in said receiver tank reaches a preset pressure, an integral pressure switch shuts said compressor (26) off.
- 10.The self-loading plastering hawk system (100) as claimed in claim 1 wherein, said compressor (26) being an autonomous functioning compressor, said compressor (26) being run by an electric system that sits on a receiver tank, in that, said compressor comprising a pressure control means configured to allow a plasterer to set a pressure threshold, said compressor comprising an integral pressure switch having a differential position such that once pressure drops below that differential position said compressor (26) starts again and builds back up to said preset pressure whereupon it stops again until said pressure drops to said differential position whereupon it starts again.
- 11.The self-loading plastering hawk system (100) as claimed in claim 1 wherein, said compressor (26) being a piston pump with compressed air where said compressed air is controlled by said trigger (24) associated with said plastering hawk (20) via an air switch that runs with said hose (18) from said container (12) to said plastering hawk (20).
- 12.The self-loading plastering hawk system (100) as claimed in claim 1 wherein, said compressor (26) being a piston pump with compressed air where said compressed air is controlled by said trigger (24) associated with said plastering hawk (20) via an electrical switch that runs with said hose (18) from said container (12) to said plastering hawk (20).
- 13.The self-loading plastering hawk system (100) as claimed in claim 1 wherein, said compressor (26) being an autonomous functioning compressor, in that, said compressor (26) being an air-pressure compressors, in that, for a single hose, pressure being between 3 bar and 7 bar.
- 14.The self-loading plastering hawk system (100) as claimed in claim 1 wherein, said hose (18) being a transparent hose or a translucent hose.
- 15.The self-loading plastering hawk system (100) as claimed in claim 1 wherein, a plurality of hoses (18) being coupled to a single container (12), each hose (18) being coupled to a corresponding plastering hawk (20); so as to form a one-tomany configuration of plastering hawks (20) deriving controlled fluid release of plaster from said single container (12) containing plaster.
- 16.The self-loading plastering hawk system as claimed in claim 1 wherein, said pump (16) being located on a follower plate atop said container (12).
- 17.The self-loading plastering hawk system as claimed in claim 1 wherein, said valve is a start-stop solenoid valve located on said handle of said hawk (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2203094.4A GB2618518A (en) | 2022-03-07 | 2022-03-07 | A self-loading plastering hawk system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2203094.4A GB2618518A (en) | 2022-03-07 | 2022-03-07 | A self-loading plastering hawk system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB202203094D0 GB202203094D0 (en) | 2022-04-20 |
| GB2618518A true GB2618518A (en) | 2023-11-15 |
Family
ID=81175411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2203094.4A Pending GB2618518A (en) | 2022-03-07 | 2022-03-07 | A self-loading plastering hawk system |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2618518A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1053645A (en) * | 1912-05-25 | 1913-02-18 | John L H Lechner | Plastering-machine. |
| US2535726A (en) * | 1948-04-30 | 1950-12-26 | Byron W Dalton | Plasterer's hawk |
| US3403960A (en) * | 1967-03-17 | 1968-10-01 | Trowel Fast Inc | Plaster delivery means for controllable feed trowel |
| US4511063A (en) * | 1983-06-06 | 1985-04-16 | The Hoddie Corporation, Inc. | Self supplying hawk |
| CN201567773U (en) * | 2009-10-21 | 2010-09-01 | 长葛市新世纪机电有限公司 | Troweling machine for convenient operation |
| GB2540140A (en) * | 2015-07-06 | 2017-01-11 | Bracey Paul | A trowel |
-
2022
- 2022-03-07 GB GB2203094.4A patent/GB2618518A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1053645A (en) * | 1912-05-25 | 1913-02-18 | John L H Lechner | Plastering-machine. |
| US2535726A (en) * | 1948-04-30 | 1950-12-26 | Byron W Dalton | Plasterer's hawk |
| US3403960A (en) * | 1967-03-17 | 1968-10-01 | Trowel Fast Inc | Plaster delivery means for controllable feed trowel |
| US4511063A (en) * | 1983-06-06 | 1985-04-16 | The Hoddie Corporation, Inc. | Self supplying hawk |
| CN201567773U (en) * | 2009-10-21 | 2010-09-01 | 长葛市新世纪机电有限公司 | Troweling machine for convenient operation |
| GB2540140A (en) * | 2015-07-06 | 2017-01-11 | Bracey Paul | A trowel |
Also Published As
| Publication number | Publication date |
|---|---|
| GB202203094D0 (en) | 2022-04-20 |
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