| Patents for F16H 21 - Gearings comprising primarily only links or levers, with or without slides (4,921) |
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| 02/06/1991 | EP0412044A2 Winch |
| 02/06/1991 | CN1011527B Innovation of slider-crank mechanism |
| 02/05/1991 | US4989488 Drive mechanism for an oscillating tool, especially a saw blade |
| 02/05/1991 | US4989469 Eccentric gear pump and drive mechanism therefor |
| 01/29/1991 | US4987787 Transmission mechanism for music box ornament |
| 01/29/1991 | CA1279632C Characterizing linkage assembly |
| 01/27/1991 | CA2012430A1 Linkage for controlling transmission pressure reduction valve |
| 01/23/1991 | EP0409131A1 Straight-line guiding of an articulation |
| 01/22/1991 | US4987507 Flexure guide for straight-line motion |
| 01/22/1991 | US4986506 Suspension arm |
| 01/18/1991 | CA2011301A1 Winch |
| 01/17/1991 | DE4020310A1 Eccentric press with stroke adjustment - with turning of eccentric bush resulting in automatic balancing |
| 01/17/1991 | DE4018061A1 Double connecting rod between rotating and reciprocating parts - has two tie rods connected via cross link to a camshaft, the tie rods arranged to be under tension in all cyclic positions |
| 01/16/1991 | EP0407599A1 Telescopic cover apparatus |
| 01/10/1991 | DE3921633A1 Overload relief valve with part mounted on machine - has another part, with bearing box and bearing point with bent lever system |
| 01/10/1991 | CA2019670A1 Winch |
| 01/09/1991 | EP0407184A2 Parallel link mechanism |
| 01/09/1991 | EP0406808A1 Crankdrive for a blankfeeder at a working machine, in particular an automatic punching or bending machine |
| 12/27/1990 | EP0309508B1 Crank mechanism |
| 12/25/1990 | US4979476 Counter-balance system for counter-rotating twin-shaft reciprocating engine |
| 12/20/1990 | DE3919708A1 Lever drive with bolts meshing with inclined levers - drives output shaft also driven directly from power source |
| 12/18/1990 | US4977817 Motion modifier method and apparatus |
| 12/09/1990 | WO1990015268A1 Lever having swingable fulcrum and mechanical device using said lever device |
| 12/04/1990 | US4974554 Compound rod, sleeve and offset crankshaft assembly |
| 12/04/1990 | CA1277281C Apparatus for turning a workpiece over along a twisting path of motion |
| 11/14/1990 | EP0396854A1 Power pulse generator |
| 10/30/1990 | US4966043 Crank drive |
| 10/23/1990 | US4964374 Reciprocating piston internal combustion engines and like machines |
| 10/18/1990 | WO1990012202A1 Reciprocating engine having two crank mechanisms |
| 10/18/1990 | DE3911821A1 Drive for displacement piston engine - has balancing mass contained in hollow wheel |
| 10/11/1990 | DE3911286A1 Pivoting device, in particular for an implement for removing castings |
| 10/03/1990 | EP0389716A1 Cam crank mechanism and motor driven hydraulic tool |
| 10/02/1990 | US4959989 Force multiplying press |
| 09/25/1990 | US4958531 Mechanism for transmitting rotational motion from one shaft to another |
| 09/19/1990 | EP0387372A1 Improvements in reciprocating piston internal combustion engines and like machines |
| 09/19/1990 | CN1045445A Centrifugal thrustor |
| 09/12/1990 | EP0386847A2 Crank mechanism |
| 09/05/1990 | EP0385196A2 Transmission with variable ratio |
| 09/05/1990 | EP0384947A2 Flexure guide for straight-line motion |
| 09/04/1990 | US4954832 Apparatus for simultaneously rotating a plurality of parallel shafts |
| 08/29/1990 | EP0384805A1 Oscillating mechanism with precise end stops |
| 08/29/1990 | EP0297976B1 Sealed transmission device using metallic bellows, especially for single quarter turn valves |
| 08/28/1990 | US4951516 Force multiplication mechanism |
| 08/07/1990 | US4947018 Retracting rocker unit |
| 07/31/1990 | CA1272102A1 Motion transmitting means |
| 07/26/1990 | DE3922544C1 Electrically powered massager - has converter as tumbler shaft mounted on motor shaft, and moving massager head support |
| 07/24/1990 | US4943104 Opening and closing controls of roofs for vehicles |
| 07/19/1990 | DE3943148A1 Three-dimensional folding mechanism - has cranks between hinging driving members on frame |
| 07/12/1990 | WO1990007400A1 Telescopic cover apparatus |
| 07/10/1990 | US4939944 Transmission mechanism for music box ornament |
| 07/05/1990 | DE3844277A1 Telescopic folding structure |
| 07/03/1990 | CA1271055A1 Reciprocating long dwell mechanism |
| 07/03/1990 | CA1271054A1 Rotary/linear convertor |
| 06/20/1990 | EP0374090A1 Sewing machine |
| 06/20/1990 | CN1043221A Circuit breaker drive mechanism |
| 06/19/1990 | US4934217 Power transmission apparatus and methods of constructing and utilizing same |
| 06/19/1990 | US4934211 Crank mechanism |
| 06/13/1990 | EP0372449A1 Operating device for a circuit breaker |
| 06/13/1990 | EP0372376A2 Oscillating device |
| 06/12/1990 | US4932128 Mechanical force enhancer |
| 06/06/1990 | CN1008296B Inward swing crank and connecting rod mechanism |
| 05/31/1990 | WO1990005862A1 Four dead centers crank mechanism |
| 05/31/1990 | CA2003957A1 Sewing machine |
| 05/30/1990 | EP0370672A1 Mechanism for transmitting rotational motion from one shaft to another |
| 05/30/1990 | EP0370258A2 Device for oscillatingly driving at least one shaft, and device for intermittently advancing a work piece with the device |
| 05/30/1990 | EP0370035A1 Device for producing a vertical lifting movement in continuous casting ingot moulds. |
| 05/30/1990 | EP0211075B1 Apparatus for simultaneously rotating a plurality of parallel shafts |
| 05/29/1990 | US4928576 Compressed gas motor |
| 05/23/1990 | EP0368923A1 Cross-shaped crank mechanism |
| 05/17/1990 | WO1990005252A1 Variable ratio drive transmission |
| 05/16/1990 | EP0368531A1 Mechanism for transmitting rotational motion from one shaft to another |
| 05/15/1990 | US4926033 Linear reciprocating motion device and optical card transporting device which employs the same |
| 05/03/1990 | DE3835811A1 Gearing arrangement designed as a crank gearing for converting a rotary into a reciprocating motion |
| 05/02/1990 | EP0366107A2 Device controlling the feeder of a stepwise advancing feeding apparatus |
| 04/25/1990 | EP0365408A1 Hinged arm-type mechanism and sonar aerial equipped with such a mechanism |
| 04/25/1990 | CN1007710B Two force-increasing toggle mechanism |
| 04/18/1990 | CN1041434A Regulating mechanism of crank |
| 04/17/1990 | US4916932 Force multiplying press |
| 04/11/1990 | EP0363058A1 Retracting rocker unit |
| 04/11/1990 | EP0362342A1 Articulated device, for use in particular in the field of robotics. |
| 04/11/1990 | EP0362234A1 Device for centering x-ray film cassettes. |
| 04/10/1990 | US4915598 Auxiliary drive of an internal combustion engine for an air compressor |
| 04/04/1990 | EP0361449A1 A transmission unit for motor vehicle windscreen wipers |
| 04/03/1990 | US4912994 Linkage device |
| 03/28/1990 | EP0360756A2 Wobbling drive for an orbitally moving member |
| 03/21/1990 | EP0358759A1 Table structure |
| 03/14/1990 | CN1007173B Reciprocating-piston compressor for small refrigerator and method for assembling same |
| 03/06/1990 | US4905975 Clamping device with mechanical servo mechanism |
| 03/06/1990 | US4905738 Control for a rotary dobby heald frame connecting rod |
| 02/22/1990 | WO1990001647A1 Double upside down crank mechanism |
| 02/21/1990 | CN1006922B Rotaryllinear convertor |
| 02/20/1990 | US4901589 Drive and positioning system for a slide |
| 02/06/1990 | US4898042 Rotary drives |
| 02/06/1990 | US4898041 Drive linkage for reciprocating engine |
| 01/31/1990 | CN2052087U Multi-purpose forcing device for mechanical moment |
| 01/30/1990 | US4896907 Locking device for a vehicle |
| 01/24/1990 | EP0351999A1 Mechanism for transmitting rotational motion from one shaft to another |
| 01/11/1990 | DE3824436A1 Eccentric gearing |
| 01/09/1990 | US4892010 Sealed transmission device using metal bellows, suitable for quarterturn valves |
| 01/02/1990 | US4890589 Variable capacity type reciprocating piston device |