| Patents for G04B 13 - Gearwork (1,123) |
|---|
| 01/18/1994 | US5280460 Gear mechanism especially for timepiece |
| 12/08/1993 | EP0572396A1 Instantaneous shift display mecanism |
| 10/21/1993 | CA2091657A1 Wheel and pinion assembly with friction drive/slip coupling for a timepiece |
| 10/12/1993 | US5253231 Braking arrangement for a gear wheel |
| 07/14/1993 | CN2138308Y Twenty-four hours clock |
| 06/23/1993 | CN2136995Y Movement of clock with 24 (twenty-four) hours time-displaying |
| 04/07/1993 | CN2129426Y Timing mechanism of quartz-controlled clock |
| 10/15/1992 | WO1992017826A1 Clock with a linear scale |
| 10/13/1992 | US5155712 Wheel and pinion assembly with friction drive/slip coupling for a timepiece |
| 08/05/1992 | CN1017754B Time-setting mechanism for analog timepiece |
| 06/16/1992 | CA1303366C Train wheel structure of electronic timepiece |
| 05/12/1992 | US5113382 Chronograph watch |
| 04/29/1992 | EP0482443A1 Braking device for a gear-wheel |
| 03/11/1992 | CN2098700U Finger-type solar day clock |
| 01/29/1992 | EP0468467A2 Process for producing precision metal parts by powder moulding |
| 01/07/1992 | US5079754 End-face waving gear reducer |
| 12/18/1991 | CN2090998U Friction mechanism for driving timepiece pointer train |
| 12/12/1991 | WO1991019233A1 Instantaneous shift display mecanism |
| 12/11/1991 | CN2090544U Clock (or watch) with indication from 1 to 24 |
| 12/04/1991 | CN1056755A Gear mechanism especially for timepiece |
| 11/27/1991 | EP0458175A1 Gear mechanism, in particular for a time-piece |
| 10/30/1991 | CN1014553B Time wheel and making method thereof |
| 10/16/1991 | EP0451660A1 Chronograph watch |
| 10/09/1991 | EP0261243B1 Construction of timepiece |
| 09/24/1991 | US5051968 Digital-analog display device for timepiece |
| 07/17/1991 | CN1013229B Timepiece |
| 05/01/1991 | CN2076249U Pointer clock (watch) |
| 03/27/1991 | EP0419421A1 Watch with a linear scale |
| 12/05/1990 | CN1010714B Apparatus for compounding resin hand shaft |
| 11/13/1990 | US4970709 Watch hand adjustment gear |
| 10/24/1990 | EP0394215A2 Display assembly for a watch |
| 10/03/1990 | EP0389732A1 Digital-analog display |
| 05/23/1990 | EP0369704A2 Slip mechanism for use in a timepiece |
| 03/06/1990 | US4907210 Train wheel of electronic timepiece |
| 02/28/1990 | CN1040102A Electronic clock bipolar stepping motor rotor mechanical energy transfer shifting yoke |
| 12/20/1989 | CN2049790U N 1 globe clock |
| 11/23/1989 | EP0342705A2 Electronic watch |
| 08/29/1989 | US4862434 Timepiece structure |
| 08/15/1989 | US4858210 Apparatus with synthetic resin hand shaft |
| 08/01/1989 | US4853909 Time correction mechanism for an analog timepiece using plastic gears for transmitting the rotation of the manual operation member to the hands |
| 07/26/1989 | CN2041825U Bipolar shifting yoke of stepper motor |
| 06/14/1989 | CN2039437U Mechanical clock with twisting pendulum |
| 06/07/1989 | EP0319304A2 Timepiece movement |
| 05/24/1989 | CN2038252U Small timer with warner |
| 04/12/1989 | CN1032404A Horary apparatus with analogical display |
| 04/05/1989 | EP0310416A2 Timepiece |
| 03/22/1989 | CN2034709U Working mechanism for reforming a standard clockwork alarm clock to turning its hands only once in 24 hours |
| 02/15/1989 | CN2032733U Mechanical alarm clock with plastic gear |
| 02/14/1989 | US4805161 Drive arrangement for an electronically controlled watch |
| 02/01/1989 | CN1030830A Timepiece |
| 02/01/1989 | CN1030829A Timepiece wheel and method for preparing the same |
| 11/16/1988 | CN88102124A Time-setting mechanism for analog timepiece |
| 11/15/1988 | US4785434 Slip structure of a timepiece |
| 10/12/1988 | EP0286078A2 Time-setting mechanism for analog timepiece |
| 10/05/1988 | EP0285560A1 Chronograph watch |
| 07/13/1988 | CN87107949A Apparatus for compounding resin hand shaft |
| 05/04/1988 | CN87201522U Quartz clock with double colour disk for indicating day and night |
| 03/30/1988 | EP0261243A1 Construction of timepiece |
| 01/12/1988 | US4719609 Hour gear structure of a watch |
| 12/08/1987 | US4711584 Movement of electronic watch of analog display type |
| 12/08/1987 | US4711583 Astronomical wrist-watch |
| 10/08/1987 | WO1987006031A1 Construction of timepiece |
| 06/30/1987 | US4676659 Intermittent driving arrangement for a time indicator |
| 06/23/1987 | US4674889 Watch |
| 06/09/1987 | US4671670 Wristwatch |
| 05/13/1987 | CN86205718U Improved tooth form of clock gear |
| 04/22/1987 | EP0218926A1 Intermittent driving device for a time piece |
| 02/25/1987 | EP0211285A2 Wrist watch |
| 01/22/1987 | DE3522672C1 Setting stem/setting wheel |
| 01/13/1987 | US4636087 Gear train mechanism stop device of timepiece |
| 01/06/1987 | US4634289 Clock construction, Geneva clutch therefor and methods of making the same |
| 09/24/1986 | EP0195742A1 Astronomical watch |
| 09/12/1986 | WO1986005288A1 Astronomical wrist-watch |
| 08/27/1986 | EP0191921A2 Watch |
| 08/06/1986 | EP0189893A2 Gear train mechanism stop device of timepiece |
| 03/19/1985 | CA1184043A1 Gear for day/date mechanism |
| 01/02/1985 | EP0129683A1 Date indicating mechanism for watches |
| 10/23/1984 | US4478522 Device for rotationally driving a member intermittently |
| 09/25/1984 | US4473301 Indexing gear for timekeeping devices |
| 08/14/1984 | US4465378 Clock movement |
| 05/29/1984 | US4451161 Movement for an electronic watch with analogue display |
| 10/11/1983 | US4408898 Positioning mechanism for a center wheel |
| 06/22/1983 | EP0082110A1 Electronic watch with or without a seconds hand |
| 05/18/1983 | EP0079301A1 Drive device for intermittently rotating a component part |
| 04/05/1983 | US4378957 Reduction gear of electronic wristwatch with stepping motor and sweep second hand |
| 12/28/1982 | US4365899 Gear train of an electronic timepiece |
| 12/22/1982 | EP0067791A1 Wheel staff for a time piece |
| 11/02/1982 | US4357695 Reduction gear for electronic timepiece |
| 11/02/1982 | CA1134624A1 Reduction gear of electronic wristwatch with stepping motor and sweep second hand |
| 07/28/1982 | EP0015956B1 Device for driving a toothed wheel by a step-by-step motor |
| 05/25/1982 | CA1124086A1 Gear train for analog display timepiece |
| 03/30/1982 | US4321839 Monodirectional torque-transmission gear |
| 02/03/1982 | EP0044905A1 Gear drive |
| 12/29/1981 | US4308610 Gear train for analog display timepiece |
| 12/29/1981 | US4308605 Balance wheel assembly |
| 06/24/1981 | EP0030658A1 Drive for the hands of a timepiece |
| 05/27/1981 | EP0029204A1 Mechanism for positioning a centre wheel |
| 03/31/1981 | US4259735 Timepiece movement with differential gear mechanism |
| 02/10/1981 | US4250576 Electric clock |
| 01/27/1981 | US4247931 Slip mechanism for a timepiece |