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Class Information
Number: 464/30
Name: Rotary shafts, gudgeons, housings, and flexible couplings for rotary shafts > Overload release coupling
Description: A flexible coupling wherein means is provided for transmitting torque between input and output members so as to accommodate relative rotation between said members when resistance to rotation of said output member exceeds a predetermined value, said means including either (a) a device which is designed to rupture when said resistance to rotation exceeds said predetermined value, or (b) a device which slips or disengages when said resistance to rotation exceeds said predetermined value but which automatically reengages without operator intervention or other additional operation when said resistance to rotation no longer exceeds said predetermined value.

Sub-classes under this class:

Class Number Class Name Patents
464/31 Including thermally responsive element 24
464/35 Torque transmitted via a ball 42
464/32 Torque transmitted via frangible element 99
464/40 Torque transmitted via frictional engagement of coil spring 41
464/42 Torque transmitted via frictional engagement of conical or frustoconical surfaces 20
464/45 Torque transmitted via frictional engagement of planar radially extending surfaces 34
464/41 Torque transmitted via plural circumferentially spaced friction elements 38
464/34 Torque transmitted via radially spaced deformable roller 19
464/37 Torque transmitted via resiliently biased positive drive connection (e.g., cam and follower) 135

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8596393 Drive unit and control apparatus thereof Dec. 3, 2013
8574083 Power transmission device and joint unit of power transmission device Nov. 5, 2013
8424663 Torque limiter Apr. 23, 2013
8376862 Motorized spindle drive with overload protection Feb. 19, 2013
8274864 Slip gear structure and timepiece equipped with the same Sep. 25, 2012
8220883 Ejection device with slipping clutch Jul. 17, 2012
8222781 Overload protection device for motor Jul. 17, 2012
8221247 Transmission device having overload protection subassembly Jul. 17, 2012
8191977 Ejection device with slipping clutch Jun. 5, 2012
8132991 Protection device for a motor spindle Mar. 13, 2012
8122781 Generator shear gear Feb. 28, 2012
8105171 Torque limiting mechanism Jan. 31, 2012
8075439 Automatic opening-closing device Dec. 13, 2011
7938729 Frictional clutch with O-ring May. 10, 2011
7828662 Plastic slip clutch Nov. 9, 2010
7803056 Power transmission device Sep. 28, 2010
7658677 Force limiting assembly Feb. 9, 2010
7594856 Overload clutch device, clutch disk, and driving toothed wheel Sep. 29, 2009
7540719 Power transmission and compressor Jun. 2, 2009
7506402 Arrangement for self-releasing connection of a windscreen wiper arm on a driving shaft Mar. 24, 2009
7507159 Power transmission apparatus Mar. 24, 2009
7407440 Drive shaft coupling Aug. 5, 2008
7367891 Techniques for controlling transfer of torque using detent members responsive to radial force May. 6, 2008
7237663 Bi-directional release mechanism for a torque fuse device Jul. 3, 2007
7150680 Drive shaft coupling Dec. 19, 2006
7090060 Bi-directional release mechanism for a torque fuse device Aug. 15, 2006
7025185 Torque releasing device Apr. 11, 2006
7018296 Gear drive with integrated torque limiting coupling Mar. 28, 2006
7014009 Motor operated power steering device Mar. 21, 2006
6910969 Power transmission apparatus for clutchless compressor Jun. 28, 2005
6805017 Motor-driven power steering device Oct. 19, 2004
6725994 Mechanism useful as a slip clutch or brake and method of making same Apr. 27, 2004
6722992 Torque limiter and reel mount Apr. 20, 2004
6565341 Geared feed pump for supplying fuel to a high pressure fuel pump May. 20, 2003
6527427 Clutching feature for adjusting device Mar. 4, 2003
6500085 Mechanical device for transmitting power Dec. 31, 2002
6488260 Electric fail safe valve actuator Dec. 3, 2002
6443846 Spare tire carrier torque-limiting slip mechanism Sep. 3, 2002
6405612 Electric steering column Jun. 18, 2002
6398654 Overload clutch Jun. 4, 2002
6361442 Repeatable preset torquing force vise handle for producing repeatable clamping force in a vise Mar. 26, 2002
6312339 Safety coupling Nov. 6, 2001
6309303 Slip clutch for a tube cleaner Oct. 30, 2001
6302798 Torque reducer and torque transmitter including the same Oct. 16, 2001
6296209 Railroad switch stand Oct. 2, 2001
6287204 Adjustable torque limiter Sep. 11, 2001
6272946 Steering device for miniature vehicle Aug. 14, 2001
6244961 Arrangement for the control of a rotational shaft coupling for a dobby and a rotational shaft coupling with an arrangement of this kind Jun. 12, 2001
6234904 Drive power transmission apparatus May. 22, 2001
6217453 Flexible coupling and bonded subassembly having a central pivot bearing Apr. 17, 2001

1 2 3

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