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US3205620A - Method and apparatus for cleaning hands and the like - Google Patents

Method and apparatus for cleaning hands and the like Download PDF

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Publication number
US3205620A
US3205620A US257928A US25792863A US3205620A US 3205620 A US3205620 A US 3205620A US 257928 A US257928 A US 257928A US 25792863 A US25792863 A US 25792863A US 3205620 A US3205620 A US 3205620A
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Prior art keywords
alcohol
jets
enclosure
arm
abrasive particles
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Expired - Lifetime
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US257928A
Inventor
Harmon H Woodworth
Peter M Newgard
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American Sterilizer Co
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American Sterilizer Co
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Publication date
Application filed by American Sterilizer Co filed Critical American Sterilizer Co
Priority to US257928A priority Critical patent/US3205620A/en
Priority to GB5845/64A priority patent/GB1003609A/en
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Publication of US3205620A publication Critical patent/US3205620A/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • A61L2/22—Phase substances, e.g. smokes, aerosols or sprayed or atomised substances
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K7/00—Body washing or cleaning implements
    • A47K7/04—Mechanical washing or cleaning devices, hand or mechanically, i.e. power operated

Definitions

  • the apparatus has a tank 1 filled to a level 2 with alcohol and having in its bottom a motor 3 driving an agitator 4, setting up circulatory currents in the direction of arrows 5 for maintaining abrasive particles dispersed throughout the alcohol.
  • abrasive particles may be plastic, abrasive, metal.
  • the high velocity jets with entrained solid particles loosen the contaminants by direct momentum exchange and supply the excess of fluid to carry the dislodged contaminants away.
  • Thirty mesh sand is a convenient abrasive with the particles sizes ranging from .002 to .020 inch in diameter.
  • Three parts alcohol to one part abrasive particle-s by volume is a convenient mixture.
  • the space above the alcohol level 2 is pressurized by compressed gas from a compressed gas reservoir 7 connected to the upper part of the tank 1 through a pressure regulating valve 8.
  • the pressure in the gas reservoir 7 is maintained in the usual manner by a gas compressor 9.
  • the normal concentration of alcohol in the tank 1 is from 60 to 95% ethyl alcohol by weight at room temperature with the balance water. This concentration is maintained by a suitable concentration controller 10 which feeds makeup alcohol from a reservoir 11 of 95 alcohol and water.
  • the pressurized alcohol with the abrasive particles suspended therein is conducted through a conduit 12 and valve 13 and flexible hose 14 to a nozzle ring 15 having a plurality of inwardly directed nozzles 16 through which jets 17 are discharged.
  • a nozzle ring 15 having a plurality of inwardly directed nozzles 16 through which jets 17 are discharged.
  • Commercial nozzles which produce a flattened jet may be used.
  • the selection and arrangement of the nozzles is arranged to provide uniform coverage.
  • the nozzle ring 15 is connected through a shaft 18 to a traverse mechanism 19 which moves the ring back and forth within the Wash compartment 20.
  • a seal 21 is provided for the shaft 18.
  • An arm seal 22 prevents leakage during the washing operation.
  • an indifferent gas such as nitrogen is supplied from a reservoir 23 through a reducing valve 24.
  • the surgeon inserts his arm 25 through the arm seal 22 which initially positions the fingertips generally within the nozzle ring 15.
  • the valve 13 is then opened and the traversing mechanism 19 started to move the nozzle ring 15 toward the left.
  • a mixture of alcohol and abrasive particles is discharged in the form of jets 17 against the fingers, hand and ultimately the wrist and arm as the nozzle ring continues its traverse.
  • the rate of traverse of the nozzle ring 15 may be varied in accordance with the bacteria population which is highest on the hands and fingers and much less on the arms.
  • the jet velocity is high, for example 60 or ice more feet per second, the comfort level is superior to the presently used bristle brush.
  • the abrasive particles strike the skin at a high angle of incidence and dislodge dirt and bacteria.
  • the alcohol flushes away the dirt and bacteria and also kills some of the bacteria.
  • the alcohol and abrasive mixture collects in the bottom of the washing compartment 20 and is returned to the tank 1 through valve 26 and pump 27.
  • the compressed air supplied to the upper part of the tank 1 is not discharged through the jets 17. It merely serves to pressurize the alcohol or alcohol and abrasive dispersion so that jets of the required velocity emerge from the nozzle ring. This is merely one way of obtaining the airless blast of alcohol or alcohol and abrasive as the case may be. Other expcdients for pressurizing the alcohol are available. Other apparatus is available to produce a high velocity jet of alcohol and suspended solid particles.
  • the surgeon is free to turn and otherwise shift the position of his hand, arm and fingers to insure complete coverage of the surfaces to be cleaned.
  • the end result of the cleaning is surgical cleanliness comparable with that obtained by conscientious use of the currently used surgical scrub procedures.
  • the results are, however, obtained in much less time and because of the possibility of more accurate control, both of the cleaning media and of the operational times, greater uniformity of cleanliness can be obtained.
  • the method of cleaning hands and the like having surfaces to be cleaned which comprises confining the hand within an enclosure, directing airless jets of alcohol and suspended abrasive particles against said surfaces.
  • the method of cleaning hands and the like having surfaces to be cleaned which comprises confining the hand within an enclosure, directing airless jets of alcohol and suspended abrasive particles against said surfaces, and rinsing said surfaces by a blast of alcohol.
  • the method of cleaning hands and the like having surfaces to be cleaned which comprises confining the hand within an enclose, directing jets of alcohol with abrasive particles suspended therein against said surfaces, and supplying an indifferent gas to the enclosure to prevent an explosive mixture within the enclosure.
  • Apparatus for cleaning hands and arms comprising an enclosure having an arm seal through which a hand and the desired portion of the arm to be washed may be inserted into the enclosure, a nozzle ring within the enclosure surrounding a local portion of the hand and arm, a source of alcohol and suspended abrasive particles under pressure connected by a conduit to said ring, 'noz zles on the ring discharging jets of alcohol and suspended abrasive particles toward said local portion, and means for moving the ring along the hand and arm to expose different portions to the jets.
  • Apparatus for cleaning hands and arms comprising an enclosure having an arm seal through which a hand and the desired portion of the arm to be washed may be inserted into the enclosure, a nozzle ring within the enclosure surrounding a local portion of the hand and arm, a source of alcohol and suspended abrasive particles under pressure connected by a conduit to said ring, nozzles on the ring discharging jets of alcohol and suspended abrasive particles toward said local portion, means for moving the ring along the hand and arm to expose different portions to the jets, and means for supplying an indifferent gas to said enclosure to prevent an explosive mixture within the enclosure.
  • Apparatus for cleaning hands and arms having surfaces to be cleaned comprising an enclosure having an arm'seal through which a hand and the desired portion of the arm to be washed may be inserted into the enclosure, and means for directing airless jets of alcohol and suspended abrasive particles against said surfaces.
  • Apparatus for cleaning hands and arms having surfaces to be cleaned comprising an enclosure having an arm seal through which a hand and the desired portion of the arm to be washed may be inserted into the enclosure, means for directing airless jets of alcohol and suspended abrasive particles against said surfaces, and means for directing an airless blast of alcohol against said surfaces for rinsing.
  • the method of cleaning hands and the like having surfaces to be cleaned which comprises confining the hand within an enclosure, directing airless jets of alcohol and suspended solid particles against said surfaces to loosen contaminants by direct momentum exchange and to flush away the dislodged contaminants.
  • Apparatus for cleaning hands and arms having surfaces to be cleaned comprising an enclosure having an arm seal through which a hand and the desired portion of the arm to be washed may be inserted into the enclosure, and means for discharging airless jets of alcohol and suspended abrasive particles against said surfaces and then discharging jets of alcohol against said surfaces to flush away adherent particles of the abrasive.
  • the method of surgically scrubbing surgeons hands and arms having surfaces to be cleaned which comprises confining the hand and arm within an enclosure, directing airless jets of alcohol and suspended abrasive particles against said surfaces to loosen contaminants by direct momentum exchange and to flush away the dislodged contaminants.
  • Apparatus for surgically scrubbing surgeons hands and arms having surfaces to be cleaned which comprises an enclosure for confining the hand and arm, means for directing airless jets of alcohol and suspended abrasive particles against said surfaces to loosen contaminants by direct momentum exchange and to flush away the dislodged contaminants.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Cleaning In General (AREA)

Description

p 1965 H. H. WOODWORTH ETAL 3,205,620
METHOD AND APPARATUS FOR CLEANING HANDS AND THE LIKE Filed Feb. 12, 1963 IN V EN TOR.
(Via/WWW WWW y 51 7h win 1,4
United States Patent 3,205,620 METHOD AND APPARATUS FOR CLEANING HANDS AND THE LIKE Harmon H. Woodworth, Los Altos, and Peter M. Newgard, Redwood City, Qalitl, assignors, by mesne assignments, to American Sterilizer Company, Erie, Pa, a corporation of Pennsylvania Filed Feb. 12, 1963, Ser. No. 257,928 12 Claims. ((Il. 51-8) This invention is a method and apparatus for cleaning surgeons hands and arms by a blast or jet of abrasive particles suspended in alcohol. The abrasive particles dislodge dirt and bacteria which are flushed away and killed by the alcohol. The end result is surgical cleanliness in a matter of seconds with more comfort than the time consuming surgical scrub.
In the drawing, the single figure is a diagrammatic view of one form of apparatus.
The apparatus has a tank 1 filled to a level 2 with alcohol and having in its bottom a motor 3 driving an agitator 4, setting up circulatory currents in the direction of arrows 5 for maintaining abrasive particles dispersed throughout the alcohol. These abrasive particles may be plastic, abrasive, metal. The high velocity jets with entrained solid particles loosen the contaminants by direct momentum exchange and supply the excess of fluid to carry the dislodged contaminants away. Thirty mesh sand is a convenient abrasive with the particles sizes ranging from .002 to .020 inch in diameter. Three parts alcohol to one part abrasive particle-s by volume is a convenient mixture.
The space above the alcohol level 2 is pressurized by compressed gas from a compressed gas reservoir 7 connected to the upper part of the tank 1 through a pressure regulating valve 8. The pressure in the gas reservoir 7 is maintained in the usual manner by a gas compressor 9.
The normal concentration of alcohol in the tank 1 is from 60 to 95% ethyl alcohol by weight at room temperature with the balance water. This concentration is maintained by a suitable concentration controller 10 which feeds makeup alcohol from a reservoir 11 of 95 alcohol and water.
The pressurized alcohol with the abrasive particles suspended therein is conducted through a conduit 12 and valve 13 and flexible hose 14 to a nozzle ring 15 having a plurality of inwardly directed nozzles 16 through which jets 17 are discharged. Commercial nozzles which produce a flattened jet may be used. The selection and arrangement of the nozzles is arranged to provide uniform coverage. The nozzle ring 15 is connected through a shaft 18 to a traverse mechanism 19 which moves the ring back and forth within the Wash compartment 20. A seal 21 is provided for the shaft 18. An arm seal 22 prevents leakage during the washing operation.
To avoid an explosive alcohol air mixture within the washing compartment 20, an indifferent gas such as nitrogen is supplied from a reservoir 23 through a reducing valve 24.
In use, the surgeon inserts his arm 25 through the arm seal 22 which initially positions the fingertips generally within the nozzle ring 15. The valve 13 is then opened and the traversing mechanism 19 started to move the nozzle ring 15 toward the left. A mixture of alcohol and abrasive particles is discharged in the form of jets 17 against the fingers, hand and ultimately the wrist and arm as the nozzle ring continues its traverse. The rate of traverse of the nozzle ring 15 may be varied in accordance with the bacteria population which is highest on the hands and fingers and much less on the arms. Although the jet velocity is high, for example 60 or ice more feet per second, the comfort level is superior to the presently used bristle brush. The abrasive particles strike the skin at a high angle of incidence and dislodge dirt and bacteria. The alcohol flushes away the dirt and bacteria and also kills some of the bacteria. The alcohol and abrasive mixture collects in the bottom of the washing compartment 20 and is returned to the tank 1 through valve 26 and pump 27.
At the end of the washing operation there may be some abrasive particles adhering to the skin. Accordingly, it is desirable that these particles be flushed off with alcohol. This can be done by stopping the agitator 3, 4 so that the jets 17 now contain essentially alcohol, although there may be some traces of abrasive remaining. On the return traverse of the nozzle ring 15, the jets of alcohol flush off any adherent particles of abrasive.
Instead of 7 minutes for the currently used surgical scrub, the entire operation can be completed in 30 seconds or less.
The compressed air supplied to the upper part of the tank 1 is not discharged through the jets 17. It merely serves to pressurize the alcohol or alcohol and abrasive dispersion so that jets of the required velocity emerge from the nozzle ring. This is merely one way of obtaining the airless blast of alcohol or alcohol and abrasive as the case may be. Other expcdients for pressurizing the alcohol are available. Other apparatus is available to produce a high velocity jet of alcohol and suspended solid particles.
During the washing operation, the surgeon is free to turn and otherwise shift the position of his hand, arm and fingers to insure complete coverage of the surfaces to be cleaned.
The end result of the cleaning is surgical cleanliness comparable with that obtained by conscientious use of the currently used surgical scrub procedures. The results are, however, obtained in much less time and because of the possibility of more accurate control, both of the cleaning media and of the operational times, greater uniformity of cleanliness can be obtained.
What is claimed as new is:
1. The method of cleaning hands and the like having surfaces to be cleaned which comprises confining the hand within an enclosure, directing airless jets of alcohol and suspended abrasive particles against said surfaces.
2. The method of cleaning hands and the like having surfaces to be cleaned which comprises confining the hand within an enclosure, directing airless jets of alcohol and suspended abrasive particles against said surfaces, and rinsing said surfaces by a blast of alcohol.
3. The method of cleaning hands and the like having surfaces to be cleaned which comprises confining the hand within an enclose, directing jets of alcohol with abrasive particles suspended therein against said surfaces, and supplying an indifferent gas to the enclosure to prevent an explosive mixture within the enclosure.
4. The method of cleaning hands and other surfaces which comprises confining the hand Within an enclosure, discharging jets of alcohol and abrasive particles suspended therein against said surfaces and then discharging jets of alcohol against said surfaces to flush away adherent particles of the abrasive.
5. Apparatus for cleaning hands and arms comprising an enclosure having an arm seal through which a hand and the desired portion of the arm to be washed may be inserted into the enclosure, a nozzle ring within the enclosure surrounding a local portion of the hand and arm, a source of alcohol and suspended abrasive particles under pressure connected by a conduit to said ring, 'noz zles on the ring discharging jets of alcohol and suspended abrasive particles toward said local portion, and means for moving the ring along the hand and arm to expose different portions to the jets.
6. Apparatus for cleaning hands and arms comprising an enclosure having an arm seal through which a hand and the desired portion of the arm to be washed may beinserted into the enclosure, a nozzle ring within the enclosure surrounding a local portion of the hand and arm, a source of alcohol and suspended abrasive particles under pressure connected by a conduit to said ring, nozzles on the ring discharging jets of alcohol and suspended abrasive particles toward said local portion, means for moving the ring along the hand and arm to expose different portions to the jets, and means for supplying an indifferent gas to said enclosure to prevent an explosive mixture within the enclosure.
7. Apparatus for cleaning hands and arms having surfaces to be cleaned comprising an enclosure having an arm'seal through which a hand and the desired portion of the arm to be washed may be inserted into the enclosure, and means for directing airless jets of alcohol and suspended abrasive particles against said surfaces.
8. Apparatus for cleaning hands and arms having surfaces to be cleaned comprising an enclosure having an arm seal through which a hand and the desired portion of the arm to be washed may be inserted into the enclosure, means for directing airless jets of alcohol and suspended abrasive particles against said surfaces, and means for directing an airless blast of alcohol against said surfaces for rinsing.
9. The method of cleaning hands and the like having surfaces to be cleaned which comprises confining the hand within an enclosure, directing airless jets of alcohol and suspended solid particles against said surfaces to loosen contaminants by direct momentum exchange and to flush away the dislodged contaminants.
10. Apparatus for cleaning hands and arms having surfaces to be cleaned comprising an enclosure having an arm seal through which a hand and the desired portion of the arm to be washed may be inserted into the enclosure, and means for discharging airless jets of alcohol and suspended abrasive particles against said surfaces and then discharging jets of alcohol against said surfaces to flush away adherent particles of the abrasive.
11. The method of surgically scrubbing surgeons hands and arms having surfaces to be cleaned which comprises confining the hand and arm within an enclosure, directing airless jets of alcohol and suspended abrasive particles against said surfaces to loosen contaminants by direct momentum exchange and to flush away the dislodged contaminants.
12. Apparatus for surgically scrubbing surgeons hands and arms having surfaces to be cleaned which comprises an enclosure for confining the hand and arm, means for directing airless jets of alcohol and suspended abrasive particles against said surfaces to loosen contaminants by direct momentum exchange and to flush away the dislodged contaminants.
References Cited by the Examiner UNITED STATES PATENTS 1,676,825 7/28 Haase.
1,910,497 5/33 Peik' 518 2,114,573 4/38 Rhodes 5l32l 2,200,587 5/40 Tirrell 518 2,399,680 5/46 Keefer 51--321 2,952,859 9/60 Alcamo 15-21 2,955,387 10/60 Soderman 51-8 3,084,484 4/63 Hall et al. 51-8 LESTER M. SWINGLE, Primary Examiner.
JOHN C. CHRISTIE, Examiner.

Claims (1)

12. APPARATUS FOR SURGICALLY SCRUBBING SURGEONS'' HANDS AND ARMS HAVING SURFACES TO BE CLEANED WHICH COMPRISES AN ENCLOSURE FOR CONFINING THE HAND AND ARM, MEANS FOR DIRECTING AIRLESS JETS OF ALCOHOL AND SUSPENDED ABRASIVE PARTICLES AGAINST SAID SURFACES TO LOOSEN CONTAMINANTS BY DIRECT MOMENTUM EXCHANGE AND TO FLUSH AWAY THE DISLODGED CONTAMINANTS.
US257928A 1963-02-12 1963-02-12 Method and apparatus for cleaning hands and the like Expired - Lifetime US3205620A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3675373A (en) * 1970-05-28 1972-07-11 Ibm Free particle impact machining process and apparatus employing the same
US3757806A (en) * 1972-01-19 1973-09-11 Us Army Pulsating hydrojet lavage device
US3971136A (en) * 1974-05-16 1976-07-27 Madsen Erik H Hygienic spray apparatus
US4158576A (en) * 1976-10-09 1979-06-19 Koelsch-Foelger-Werke Ak. Treating surfaces with liquids
US4493783A (en) * 1981-04-20 1985-01-15 Alcon Laboratories, Inc. Cleaning agent for optical surfaces
US4613379A (en) * 1981-04-20 1986-09-23 Alcon Laboratories, Inc. Cleaning agent for optical surfaces
US4670060A (en) * 1981-04-20 1987-06-02 Alcon Laboratories, Inc. Cleaning agent for optical surfaces
US4678119A (en) * 1982-10-12 1987-07-07 Buehler Ltd. Abrasive slurry supply system for use in metallographic sample preparation
US4681738A (en) * 1986-02-04 1987-07-21 Sidney Low Method and apparatus for sterilizing objects
US4792414A (en) * 1981-04-20 1988-12-20 Alcon Laboratories, Inc. Cleaning agent for optical surfaces
US5037484A (en) * 1981-04-20 1991-08-06 Alcon Laboratories, Inc. Cleaning agent for optical surfaces
EP1175229A1 (en) * 1999-05-06 2002-01-30 Intecon Systems, Inc. Cleaning particulate matter and chemical contaminants from hands and elastomeric articles

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT8421362V0 (en) * 1984-03-26 1984-03-26 Dragone Giorgio DEVICE FOR DERMATOLOGICAL TREATMENT OF HANDS.

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1676825A (en) * 1925-11-05 1928-07-10 Goodyear Tire & Rubber Washing machine
US1910497A (en) * 1930-01-02 1933-05-23 American Foundry Equip Co Sand blast gun
US2114573A (en) * 1936-04-04 1938-04-19 George F Rhodes Sand blasting process
US2200587A (en) * 1937-02-25 1940-05-14 Hydroblast Corp Method and apparatus for sand blasting
US2399680A (en) * 1945-04-12 1946-05-07 Pangborn Corp Abrasive blasting
US2952859A (en) * 1958-03-19 1960-09-20 John H Alcamo Surgeons' pre-operating scrubbing machine
US2955387A (en) * 1958-11-10 1960-10-11 Western Electric Co Apparatus for abrasively treating objects
US3084484A (en) * 1960-11-17 1963-04-09 Sylvania Electric Prod Pneumatic abrasive cutting apparatus

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1676825A (en) * 1925-11-05 1928-07-10 Goodyear Tire & Rubber Washing machine
US1910497A (en) * 1930-01-02 1933-05-23 American Foundry Equip Co Sand blast gun
US2114573A (en) * 1936-04-04 1938-04-19 George F Rhodes Sand blasting process
US2200587A (en) * 1937-02-25 1940-05-14 Hydroblast Corp Method and apparatus for sand blasting
US2399680A (en) * 1945-04-12 1946-05-07 Pangborn Corp Abrasive blasting
US2952859A (en) * 1958-03-19 1960-09-20 John H Alcamo Surgeons' pre-operating scrubbing machine
US2955387A (en) * 1958-11-10 1960-10-11 Western Electric Co Apparatus for abrasively treating objects
US3084484A (en) * 1960-11-17 1963-04-09 Sylvania Electric Prod Pneumatic abrasive cutting apparatus

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3675373A (en) * 1970-05-28 1972-07-11 Ibm Free particle impact machining process and apparatus employing the same
US3757806A (en) * 1972-01-19 1973-09-11 Us Army Pulsating hydrojet lavage device
US3971136A (en) * 1974-05-16 1976-07-27 Madsen Erik H Hygienic spray apparatus
US4158576A (en) * 1976-10-09 1979-06-19 Koelsch-Foelger-Werke Ak. Treating surfaces with liquids
US4670060A (en) * 1981-04-20 1987-06-02 Alcon Laboratories, Inc. Cleaning agent for optical surfaces
US4613379A (en) * 1981-04-20 1986-09-23 Alcon Laboratories, Inc. Cleaning agent for optical surfaces
US4493783A (en) * 1981-04-20 1985-01-15 Alcon Laboratories, Inc. Cleaning agent for optical surfaces
US4792414A (en) * 1981-04-20 1988-12-20 Alcon Laboratories, Inc. Cleaning agent for optical surfaces
US5037484A (en) * 1981-04-20 1991-08-06 Alcon Laboratories, Inc. Cleaning agent for optical surfaces
US4678119A (en) * 1982-10-12 1987-07-07 Buehler Ltd. Abrasive slurry supply system for use in metallographic sample preparation
US4681738A (en) * 1986-02-04 1987-07-21 Sidney Low Method and apparatus for sterilizing objects
EP1175229A1 (en) * 1999-05-06 2002-01-30 Intecon Systems, Inc. Cleaning particulate matter and chemical contaminants from hands and elastomeric articles
EP1175229A4 (en) * 1999-05-06 2003-05-21 Intecon Systems Inc Cleaning particulate matter and chemical contaminants from hands and elastomeric articles

Also Published As

Publication number Publication date
GB1003609A (en) 1965-09-08

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