US2426817A - Cooling system for machine tools - Google Patents

Cooling system for machine tools Download PDF

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Publication number
US2426817A
US2426817A US573608A US57360845A US2426817A US 2426817 A US2426817 A US 2426817A US 573608 A US573608 A US 573608A US 57360845 A US57360845 A US 57360845A US 2426817 A US2426817 A US 2426817A
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Prior art keywords
liquid
work
temperature
cooling system
machine tools
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US573608A
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Charles F Charlton
Jr Mark A Palmer
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Charles F Charlton
Jr Mark A Palmer
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/14Methods or arrangements for maintaining a constant temperature in parts of machine tools
    • B23Q11/146Methods or arrangements for maintaining a constant temperature in parts of machine tools by controlling the temperature of a cutting liquid
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/10Arrangements for cooling or lubricating tools or work
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/14Methods or arrangements for maintaining a constant temperature in parts of machine tools
    • B23Q11/141Methods or arrangements for maintaining a constant temperature in parts of machine tools using a closed fluid circuit for cooling or heating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/02Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00Metal working
    • Y10S29/077Metal working with separator or filter
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00Metal working
    • Y10S29/088Metal working by projecting, squirting or dripping
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S62/00Refrigeration
    • Y10S62/10Tool cooling

Description

P 1947. cPF. CHARLTON ET AL p 2 ,8

' COOLING SYSTEM FOR MACHINE TOOLS Filed Jan. 19, 1945 Patented'sept. 2, 1947 I UNITED STATES PATENT OFFICE COOLING SYSTEM FOR MACHINE TOOLS Charles F. Charlton and Mark A. Palmer, J12,

' Manchester, Conn;

Application January 19, 1945, Serial No. 573,608

1 Claim. (01. 51 267) This invention relates to a novel and superior cooling system for machine tools, such as grinding machines, milling machines, etc. The grinding or cutting contact of such tools with the Work generates a considerable amount of heat and a circulatin flow of cooling liquid is commonly provided over the tool and work for the purpose of keeping the temperature reduced to a safe maximum. It is desirable that foreign particles shall be separated from the spent liquid before it is again returned to the work and that the liquid shall be maintained below a predetermined maximum temperature.

In machines heretofore employed the spent liquid has been returned to a settling tank where the solids are precipitated and the liquid cooled before the latter is again returned to the work. This system of maintaining the liquid at predetermined temperature has proven inefficient due to the accumulation of solids on the refrigerating plates employed in the tank. Our invention contemplates the elimination of this difiiculty by first separating the solids from the spent liquid by precipitation or otherwise and thereafter bringing the liquid to and maintaining it at the desired temperature by passing it through an enclosed channel including a, refrigerating medium on its way back to the work. The production of such an improved method of circulatin cooling liquid to machine tools and providing such liquid in clean and predetermined temperature condition to the work therein comprises the primary object of the invention.

The work operated on by grinding machines is required to be finished to a small tolerance and unless the work is kept at substantially uniform temperature during the grinding operation its expansion and contraction prevents the maintaining of such tolerance. In apparatus heretofore employed the temperature of the cooling liquid has varied as much as 15 and has been particularly affected by the gathering of sediment to a considerable thickness on the cooling system, thereby forming an insulation rendering the cooling effect very inefficient. We have discovered that by first removing the sediment and solids from the liquid and thereafter passing the clean liquid to the Work through an enclosed channel including a refrigerating unit maintained at predetermined temperature we are able to keep the work at a plus or minus temperature within two degrees. The novel method resulting in this increased efliciency comprises an important object of our invention.

These and other features of the invention will be best understoodand appreciated from the following description of a preferred embodiment thereof selected for purposes of illustration and shown in the accompanying drawing in which the one figure in the drawing is an elevation, partly broken away, of a machine embodying our invention.

In the drawing we have illustrated a grinding machine it including a grinding wheel l2. A liquid coolant is conducted to the wheel and work from a nozzle I in communication with a pipe it, the flow bein controlled by a valve l8. A coolant reservoir 23 is provided beneath the grinding wheel to receive the spent coolant. It is desirable that foreign particles, particularly including those picked up from the work, should be removed before the coolant is returned to the tool and for this purpose we have illustrated the reservoir as divided into a plurality of compartments 22, 23 and 24. The spent coolant flows from the tool into the first compartment 22 Where most of the particles settle before the coolant flows over the baffle 25 into the compartment 23. Further settling of any remaining particles takes place in compartment 23 before the coolant flows over the baffle 26 into the compartment 24. The resulting relatively clean coolant is circulated from the compartment 24 back to the tool.

Efficient operation requires that the temperature of the coolant shall be at or below a predetermined maximum when it reaches the tool and work and the primary object of our invention resides in an improved method for elliciently maintaining such temperature within predetermined limits. To this end we pass the clean coolant from the compartment 2:3 through a refrigerating path on its return to the tool. As illustrated in the drawing, this path includes a plurality of pipes or tubes 28 surrounded by a refrigerating medium of predetermined capacity and temperature within a cylindrical heat exchanger 3B.

Mounted on the reservoir is a pump 32 operated by a motor 36 and arranged to pump thecoolant from the compartment 24 through pipes 38, 38, V

28 and Hi to the nozzle It. An economizer In is preferably employed in connection with the refrigerating system. A compressor (not illustrated) maintains a suction on the line 42 which passes in the form o f-a coil 44 back to the chamber 39 at 46. The vapor thus drawn from the chamher is compressed to a liquid and returned through a pipe 48 to and through a coil 48 within the pipe of coil 4d and from thence through a pipe 50 to the bottom of the chamber 30. A thermoworking operations thereon, which consists in static expansion valve is provided at 52 and is conducting spent cooling liquid from the work connected by a tube 54 to a controlling expansion to a separating chamber, separating the detritus bulb at 56 whereby automatically to maintain a solids from the liquid in the separating chamber, predetermined temperature within the chamber 5 conducting the separated liquid through a refrig- 30. The passage of the liquidrefrigerant through erating device maintained at a constant and the relatively cooler vapor refrigerant within the definite temperature thereby cooling the sepcoils substantially. cools the reirigerar trliquigi to arated liquid; to;. a predetermined temperature, the requireddegre Orbits return {cathechamber and discharging said; liquid 7 at; said predeter- 30. A refrigerant liquid level is maintained in 10 mined temperature onto the work.

the chamber 30 substantially as indicated at 58;; CHARLES F. CHARLTON. It will be apparent that the coolant is cooled MARK A. PALMER, JR.

with maximum efficiency as it passes-throughthe several pipes 28 on its return from the .com, 7 REFERENCES CITED Partment 24 t0 the 1 a it Wi l be furthgrrhgl'e 15;, Thejollowing references are of record in the apparent that the cooling system is adaptedto file of this patent:

operate and continue to operate with maximum-- efficiency on the coolant which is substan ially v UNITED STATES PATENTS freed from foreign particles before being cir-' Number Name Date culated through the refrigerating path, 9 ,7 MiSkOlCZY ----r---- p 02 Having'thus disclosed our invention what, we 2,132,952 Todd etal. Dec.- 12, 1939 claim as new and desire to secureby Letters e et a Patent oi the United States is: 403,030; Bauer May '7; 1889 A method of producing work-to closetolerances 1,455,187 Brown May 15, 1923 in a machine tool by maintaining a predetermined 25 1,938 ,8'75 1 Stratton Dec. 12,- 1933 constant temperature in the-workpiece during

US573608A 1945-01-19 1945-01-19 Cooling system for machine tools Expired - Lifetime US2426817A (en)

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Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2705005A (en) * 1953-07-23 1955-03-29 Herbert J Tuorto Apparatus for cutting ceramics
US2742974A (en) * 1953-03-23 1956-04-24 Trion Inc Method and apparatus for cleaning air or gas laden with oil mists
US3069950A (en) * 1958-01-23 1962-12-25 Ty Sa Man Machine Company High speed friction saw having liquid cooling means
US3240026A (en) * 1963-05-13 1966-03-15 Swift & Co Poultry chilling
US3272285A (en) * 1963-06-11 1966-09-13 Auto Research Corp Pump unit for a central lubricating installation
US3394813A (en) * 1966-09-30 1968-07-30 Fram Corp De-icing and ice prevention in filters
US4197678A (en) * 1978-07-12 1980-04-15 Guy Roll Coolant separator
US4261181A (en) * 1979-11-05 1981-04-14 Hofstetter Robert W Conveyor system with cooling means
US4348864A (en) * 1979-04-17 1982-09-14 Kabushiki Kaisha Komatsu Seisakusho Tank assembly for hydraulic system
US4354357A (en) * 1979-11-05 1982-10-19 Hofstetter Robert W Conveyor system with cooling means
WO1984001322A1 (en) * 1982-09-30 1984-04-12 James Henry Hutson Hydraulic fed log debarker
EP0226206A2 (en) * 1985-12-16 1987-06-24 Kitamura Machinery Co.,Ltd. Cutting oil sorting apparatus
US5085188A (en) * 1990-12-03 1992-02-04 Allied-Signal Inc. Modular lubrication/filter system
US5217605A (en) * 1991-09-20 1993-06-08 Kottke Gordon V Portable multi-element electric discharge machine filter system
US5380446A (en) * 1993-10-04 1995-01-10 Bratten; Jack R. Method for filtration of machine tool coolant
US5961376A (en) * 1997-01-16 1999-10-05 Wernicke & Co. Gmbh Method of increasing the service life of grinding wheels
US6247480B1 (en) * 1999-06-18 2001-06-19 Ez Environmental Solutions Corporation Pressure washer containment assembly and method with a passive skimmer
US6569003B1 (en) * 2001-07-27 2003-05-27 Michael D. Harlan Coolant apparatus for a chainsaw sharpener
EP1348518A2 (en) * 2002-03-28 2003-10-01 Nidek Co., Ltd. Grinding water tank apparatus, and eyeglass lens machining apparatus having the same
US7658196B2 (en) 2005-02-24 2010-02-09 Ethicon Endo-Surgery, Inc. System and method for determining implanted device orientation
US7775966B2 (en) 2005-02-24 2010-08-17 Ethicon Endo-Surgery, Inc. Non-invasive pressure measurement in a fluid adjustable restrictive device
US7775215B2 (en) 2005-02-24 2010-08-17 Ethicon Endo-Surgery, Inc. System and method for determining implanted device positioning and obtaining pressure data
US7844342B2 (en) 2008-02-07 2010-11-30 Ethicon Endo-Surgery, Inc. Powering implantable restriction systems using light
US7927270B2 (en) 2005-02-24 2011-04-19 Ethicon Endo-Surgery, Inc. External mechanical pressure sensor for gastric band pressure measurements
US8016745B2 (en) 2005-02-24 2011-09-13 Ethicon Endo-Surgery, Inc. Monitoring of a food intake restriction device
US8016744B2 (en) 2005-02-24 2011-09-13 Ethicon Endo-Surgery, Inc. External pressure-based gastric band adjustment system and method
US8034065B2 (en) 2008-02-26 2011-10-11 Ethicon Endo-Surgery, Inc. Controlling pressure in adjustable restriction devices
US8057492B2 (en) 2008-02-12 2011-11-15 Ethicon Endo-Surgery, Inc. Automatically adjusting band system with MEMS pump
US8066629B2 (en) 2005-02-24 2011-11-29 Ethicon Endo-Surgery, Inc. Apparatus for adjustment and sensing of gastric band pressure
US8100870B2 (en) 2007-12-14 2012-01-24 Ethicon Endo-Surgery, Inc. Adjustable height gastric restriction devices and methods
US8114345B2 (en) 2008-02-08 2012-02-14 Ethicon Endo-Surgery, Inc. System and method of sterilizing an implantable medical device
US20120055458A1 (en) * 2010-09-03 2012-03-08 Rexon Industrial Corp., Ltd. Cutting device with a liquid level display
US8142452B2 (en) 2007-12-27 2012-03-27 Ethicon Endo-Surgery, Inc. Controlling pressure in adjustable restriction devices
US8152710B2 (en) 2006-04-06 2012-04-10 Ethicon Endo-Surgery, Inc. Physiological parameter analysis for an implantable restriction device and a data logger
US8187163B2 (en) 2007-12-10 2012-05-29 Ethicon Endo-Surgery, Inc. Methods for implanting a gastric restriction device
US8187162B2 (en) 2008-03-06 2012-05-29 Ethicon Endo-Surgery, Inc. Reorientation port
US8192350B2 (en) 2008-01-28 2012-06-05 Ethicon Endo-Surgery, Inc. Methods and devices for measuring impedance in a gastric restriction system
US8221439B2 (en) 2008-02-07 2012-07-17 Ethicon Endo-Surgery, Inc. Powering implantable restriction systems using kinetic motion
US8233995B2 (en) 2008-03-06 2012-07-31 Ethicon Endo-Surgery, Inc. System and method of aligning an implantable antenna
US8337389B2 (en) 2008-01-28 2012-12-25 Ethicon Endo-Surgery, Inc. Methods and devices for diagnosing performance of a gastric restriction system
US8377079B2 (en) 2007-12-27 2013-02-19 Ethicon Endo-Surgery, Inc. Constant force mechanisms for regulating restriction devices
US8591395B2 (en) 2008-01-28 2013-11-26 Ethicon Endo-Surgery, Inc. Gastric restriction device data handling devices and methods
US8591532B2 (en) 2008-02-12 2013-11-26 Ethicon Endo-Sugery, Inc. Automatically adjusting band system
US8870742B2 (en) 2006-04-06 2014-10-28 Ethicon Endo-Surgery, Inc. GUI for an implantable restriction device and a data logger

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US375821A (en) * 1888-01-03 Setts
US403030A (en) * 1889-05-07 Water-tank of grinding-machines
US698126A (en) * 1901-06-01 1902-04-22 Misko Cutlery Company Grinding or polishing metals.
US1455187A (en) * 1921-03-31 1923-05-15 Norton Co Grinding-fluid-circulating system
US1938875A (en) * 1931-05-11 1933-12-12 Diamond Machine Co Coolant supply for machine tools
US2182952A (en) * 1938-04-30 1939-12-12 Hanson Van Winkle Munning Co Air conditioned buffing and polishing system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US375821A (en) * 1888-01-03 Setts
US403030A (en) * 1889-05-07 Water-tank of grinding-machines
US698126A (en) * 1901-06-01 1902-04-22 Misko Cutlery Company Grinding or polishing metals.
US1455187A (en) * 1921-03-31 1923-05-15 Norton Co Grinding-fluid-circulating system
US1938875A (en) * 1931-05-11 1933-12-12 Diamond Machine Co Coolant supply for machine tools
US2182952A (en) * 1938-04-30 1939-12-12 Hanson Van Winkle Munning Co Air conditioned buffing and polishing system

Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2742974A (en) * 1953-03-23 1956-04-24 Trion Inc Method and apparatus for cleaning air or gas laden with oil mists
US2705005A (en) * 1953-07-23 1955-03-29 Herbert J Tuorto Apparatus for cutting ceramics
US3069950A (en) * 1958-01-23 1962-12-25 Ty Sa Man Machine Company High speed friction saw having liquid cooling means
US3240026A (en) * 1963-05-13 1966-03-15 Swift & Co Poultry chilling
US3272285A (en) * 1963-06-11 1966-09-13 Auto Research Corp Pump unit for a central lubricating installation
US3394813A (en) * 1966-09-30 1968-07-30 Fram Corp De-icing and ice prevention in filters
US4197678A (en) * 1978-07-12 1980-04-15 Guy Roll Coolant separator
US4348864A (en) * 1979-04-17 1982-09-14 Kabushiki Kaisha Komatsu Seisakusho Tank assembly for hydraulic system
US4261181A (en) * 1979-11-05 1981-04-14 Hofstetter Robert W Conveyor system with cooling means
US4354357A (en) * 1979-11-05 1982-10-19 Hofstetter Robert W Conveyor system with cooling means
WO1984001322A1 (en) * 1982-09-30 1984-04-12 James Henry Hutson Hydraulic fed log debarker
US4522242A (en) * 1982-09-30 1985-06-11 Hutson James Henry Hydraulic fed log debarker
EP0226206A2 (en) * 1985-12-16 1987-06-24 Kitamura Machinery Co.,Ltd. Cutting oil sorting apparatus
EP0226206A3 (en) * 1985-12-16 1988-09-14 Kitamura Machinery Co.,Ltd. Cutting oil sorting apparatus
US5085188A (en) * 1990-12-03 1992-02-04 Allied-Signal Inc. Modular lubrication/filter system
US5217605A (en) * 1991-09-20 1993-06-08 Kottke Gordon V Portable multi-element electric discharge machine filter system
US5380446A (en) * 1993-10-04 1995-01-10 Bratten; Jack R. Method for filtration of machine tool coolant
US5961376A (en) * 1997-01-16 1999-10-05 Wernicke & Co. Gmbh Method of increasing the service life of grinding wheels
US6247480B1 (en) * 1999-06-18 2001-06-19 Ez Environmental Solutions Corporation Pressure washer containment assembly and method with a passive skimmer
US6569003B1 (en) * 2001-07-27 2003-05-27 Michael D. Harlan Coolant apparatus for a chainsaw sharpener
EP1348518A2 (en) * 2002-03-28 2003-10-01 Nidek Co., Ltd. Grinding water tank apparatus, and eyeglass lens machining apparatus having the same
EP1348518A3 (en) * 2002-03-28 2004-03-17 Nidek Co., Ltd. Grinding water tank apparatus, and eyeglass lens machining apparatus having the same
US8016744B2 (en) 2005-02-24 2011-09-13 Ethicon Endo-Surgery, Inc. External pressure-based gastric band adjustment system and method
US7658196B2 (en) 2005-02-24 2010-02-09 Ethicon Endo-Surgery, Inc. System and method for determining implanted device orientation
US7775215B2 (en) 2005-02-24 2010-08-17 Ethicon Endo-Surgery, Inc. System and method for determining implanted device positioning and obtaining pressure data
US8066629B2 (en) 2005-02-24 2011-11-29 Ethicon Endo-Surgery, Inc. Apparatus for adjustment and sensing of gastric band pressure
US7927270B2 (en) 2005-02-24 2011-04-19 Ethicon Endo-Surgery, Inc. External mechanical pressure sensor for gastric band pressure measurements
US8016745B2 (en) 2005-02-24 2011-09-13 Ethicon Endo-Surgery, Inc. Monitoring of a food intake restriction device
US7775966B2 (en) 2005-02-24 2010-08-17 Ethicon Endo-Surgery, Inc. Non-invasive pressure measurement in a fluid adjustable restrictive device
US8870742B2 (en) 2006-04-06 2014-10-28 Ethicon Endo-Surgery, Inc. GUI for an implantable restriction device and a data logger
US8152710B2 (en) 2006-04-06 2012-04-10 Ethicon Endo-Surgery, Inc. Physiological parameter analysis for an implantable restriction device and a data logger
US8187163B2 (en) 2007-12-10 2012-05-29 Ethicon Endo-Surgery, Inc. Methods for implanting a gastric restriction device
US8100870B2 (en) 2007-12-14 2012-01-24 Ethicon Endo-Surgery, Inc. Adjustable height gastric restriction devices and methods
US8377079B2 (en) 2007-12-27 2013-02-19 Ethicon Endo-Surgery, Inc. Constant force mechanisms for regulating restriction devices
US8142452B2 (en) 2007-12-27 2012-03-27 Ethicon Endo-Surgery, Inc. Controlling pressure in adjustable restriction devices
US8192350B2 (en) 2008-01-28 2012-06-05 Ethicon Endo-Surgery, Inc. Methods and devices for measuring impedance in a gastric restriction system
US8591395B2 (en) 2008-01-28 2013-11-26 Ethicon Endo-Surgery, Inc. Gastric restriction device data handling devices and methods
US8337389B2 (en) 2008-01-28 2012-12-25 Ethicon Endo-Surgery, Inc. Methods and devices for diagnosing performance of a gastric restriction system
US7844342B2 (en) 2008-02-07 2010-11-30 Ethicon Endo-Surgery, Inc. Powering implantable restriction systems using light
US8221439B2 (en) 2008-02-07 2012-07-17 Ethicon Endo-Surgery, Inc. Powering implantable restriction systems using kinetic motion
US8114345B2 (en) 2008-02-08 2012-02-14 Ethicon Endo-Surgery, Inc. System and method of sterilizing an implantable medical device
US8591532B2 (en) 2008-02-12 2013-11-26 Ethicon Endo-Sugery, Inc. Automatically adjusting band system
US8057492B2 (en) 2008-02-12 2011-11-15 Ethicon Endo-Surgery, Inc. Automatically adjusting band system with MEMS pump
US8034065B2 (en) 2008-02-26 2011-10-11 Ethicon Endo-Surgery, Inc. Controlling pressure in adjustable restriction devices
US8233995B2 (en) 2008-03-06 2012-07-31 Ethicon Endo-Surgery, Inc. System and method of aligning an implantable antenna
US8187162B2 (en) 2008-03-06 2012-05-29 Ethicon Endo-Surgery, Inc. Reorientation port
US20120055458A1 (en) * 2010-09-03 2012-03-08 Rexon Industrial Corp., Ltd. Cutting device with a liquid level display

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