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Class Information
Number: 418/69
Name: Rotary expansible chamber devices > With frangible drive connection or clutch
Description: Apparatus in which (1) there is provided in the working member drive a weakened member designed to break or rupture on overload of the working member to thereby discontinue the drive or (2) a releasable means is provided in the drive connected to the working member for interrupting the drive either in response to a condition of operation of the device or at the will of an operator.










Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8500423 Frame rotated hydraulic motor with improved parking brake Aug. 6, 2013
8308462 Pump assembly with radial clutch for use in power transmission assemblies Nov. 13, 2012
8182250 Gerotor motor and brake assembly May. 22, 2012
7914269 Gear pump for actuating a clutch Mar. 29, 2011
7695258 Gerotor motor and brake assembly Apr. 13, 2010
7607902 Closed compressor and refrigerating cycle apparatus Oct. 27, 2009
7553138 Rotary screw machine of volume type and method of transforming a motion in a volume screw machine Jun. 30, 2009
7354250 Variable capacity rotary compressor Apr. 8, 2008
7287969 Rotary fluid pressure device and improved brake assembly for use therewith Oct. 30, 2007
7223081 Variable capacity rotary compressor May. 29, 2007
7144224 Variable capacity rotary compressor Dec. 5, 2006
7140844 Variable capacity rotary compressor Nov. 28, 2006
7104764 Variable capacity rotary compressor Sep. 12, 2006
7083397 Scroll compressor with motor control for capacity modulation Aug. 1, 2006
7040102 Vehicles and electromagnetic clutches for compressors for such vehicles May. 9, 2006
6935853 Variable capacity rotary compressor Aug. 30, 2005
6910872 Rotary compressor Jun. 28, 2005
6722867 Rotary compressor for vehicle Apr. 20, 2004
6669456 Scroll compressor having reversion preventing device Dec. 30, 2003
6634874 Scroll compressor with anti-reverse rotation clutch Oct. 21, 2003
6544019 Pump with magnetic clutch Apr. 8, 2003
6544017 Reverse rotation brake for scroll compressor Apr. 8, 2003
6478560 Parallel module rotary screw compressor and method Nov. 12, 2002
6398531 Pump drive system Jun. 4, 2002
6394776 Double rotor-vane pump May. 28, 2002
6386847 Scroll compressor having clutch with powered reverse rotation protection May. 14, 2002
6375442 Supercharger clutch system Apr. 23, 2002
6354821 Scroll compressor with dual clutch capacity modulation Mar. 12, 2002
6312238 Hydraulically retractable hydraulic motor Nov. 6, 2001
6283728 Gas powered rotary engine and compressor Sep. 4, 2001
6193041 Electromagnetic clutch in which improvement is made about radiation of heat therefrom Feb. 27, 2001
6168402 Scroll-type compressor having power transmission mechanism allowing idling Jan. 2, 2001
6152231 Wellhead drive brake system Nov. 28, 2000
6135740 Pump drive head backspin retarder Oct. 24, 2000
6086347 Two-stage rotary vane motor Jul. 11, 2000
6050795 Fuel feed gear pump having an overload safety device Apr. 18, 2000
5800138 Extracorporeal blood pump for cardiac surgery Sep. 1, 1998
5779460 Progressive cavity pump with tamper-proof safety Jul. 14, 1998
5752810 Pump with an integral clutch May. 19, 1998
5593294 Scroll machine with reverse rotation protection Jan. 14, 1997
5503541 Reverse rotation preventing clutch Apr. 2, 1996
5490769 Variable capacity scroll type fluid displacement apparatus Feb. 13, 1996
5370511 Clutch apparatus for a rotary compressor Dec. 6, 1994
5360319 Compressor assembly having control valve for triggered pressure actuated clutch Nov. 1, 1994
5320507 Scroll machine with reverse rotation protection Jun. 14, 1994
5295812 Electromagnetic clutch and pulley bearing arrangement Mar. 22, 1994
5273409 Compressor assembly including an electromagnetically triggered pressure actuated internal clutch Dec. 28, 1993
5261801 Method and apparatus for disengaging hydraulic motors Nov. 16, 1993
5228845 External shaft bearing assembly Jul. 20, 1993
4998864 Scroll machine with reverse rotation protection Mar. 12, 1991

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