William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 7712953 | Vertical clutch device for timepiece Clutch device for timepiece, comprising first and second coaxial rotary mobile parts (1, 2) able to take up a relative axial coupled position in which a rotation of the first mobile part (1) gives rise to a rotation of the second mobile part (2)... | 05/11/2010 |
| 7278782 | Analog electronic clock having reset current conductive structure To provide a reset current conductive path between a reset lever and an overhang of a printed circuit board without using a conductive part such as a metal pin and without bending a distal end portion of the reset lever. When a movement is assembled, an overhang pat... | 10/09/2007 |
| 7275859 | Display device for watch The invention concerns a display device for a watch movement comprising: a frame (110), an assembly of wheels pivotably mounted on the frame and wherein the angular position of a first (116) and a second (120) among them is based on the state of... | 10/02/2007 |
| 7275860 | Display correcting mechanism and timepiece having display correcting mechanism A timepiece has a train wheel, a display member for undergoing rotation in accordance with rotation of the train wheel, and a display correcting mechanism for correcting a display content of the display member. The display correcting mechanism has a corrector settin... | 10/02/2007 |
| 7192184 | Portable watch A portable timepiece has a pipe extending from a case and a winding stem for transmitting a rotational force to a timepiece movement in the case. A crown is connected to the winding stem for rotational movement therewith and for detachable engagement with an outer p... | 03/20/2007 |
| 6994466 | Timepiece with time correction mechanism In order to position a clutch plate 20 in a first angular position, in which teeth 2a of a second gear 2 mesh with a pinion 3b of a third gear 3, an abutment 21 and a projection 12 are provided on the cl... | 02/07/2006 |
| 6688765 | Clutch wheel for a timepiece A clutch wheel for a timepiece includes a cylindrical portion having an inner peripheral surface for slidably receiving an indicator hand setting stem of the timepiece, an outer peripheral surface, and a flanged base surface. A plurality of teeth are form... | 02/10/2004 |
| 6499874 | Timepiece with a mechanism for winding and for correcting at least two indicator members This timepiece has a winding stem (1) with three axial positions and two first connecting wheels (9, 10) which are superposed and pivoted about two respective stationary axes, and mesh with the winding pinion (2), two second connecting wheels (11, 14) mes... | 12/31/2002 |
| 5392260 | Timepiece The date disc correction mechanism (3) of this time-piece comprises a control stem (7) movable between at least two axial positions, and on which a sliding pinion (9) and a correction pinion (17) are mounted. The sliding pinion exhibits at least one spur ... | 02/21/1995 |
| 5349574 | Horological movement having guide means for a control member such as a shaft The instant invention relates to a horological movement provided with shaft guide means. This movement has horometric means (H) capable of supplying a time information and at least one control member (34) composed of the shaft and adapted to act on the ho... | 09/20/1994 |
| 5214625 | Setting mechanism for an analog timepiece A multifunction analog timepiece including a stem responsive to external regulation for controlling a displayed function. The stem is positionable at at least two steps. A clutch wheel is disposed on and movable along the stem. A setting element coupled t... | 05/25/1993 |
| 4811312 | Timer with improved clutch and method of manufacturing the same A timer includes a cam driven by a motor and a clutch for permitting the cam to be turned independently of the motor. The clutch includes a clutch plate having a toothed rim, the plate sandwiched between a pair of spring washers, and a tubular eyelet pass... | 03/07/1989 |
| 4727523 | Hand setting mechanism for a timepiece A hand setting mechanism including a stem and a sliding pinion slaved to one another by means of a setting lever and a yoke. The sliding pinion is driven in rotation by means of a slit with which it is provided and which cooperates with two flattened surf... | 02/23/1988 |
| 4447163 | Stem mechanism for a watch A winding stem mechanism for a watch having a winding stem and a pinion with a shaft body. The winding stem and pinion are dimensioned to slidably fit within a base plate recess, and have respective facing ends. One facing end is provided with a square bl... | 05/08/1984 |
| 4396294 | Correction system for electronic timepiece with both analog and digital displays In an electronic timepiece equipped with both an analog display section having time indicating hands and a digital display section, a time correction system is provided whereby correction of both the analog and digital time displays can be performed by ro... | 08/02/1983 |
| 4382689 | Clutch for a timing mechanism A clutch permits rotation of a cam means from one drive means independent of another. The clutch is operable through at least two diametrically opposed fingers engaging slots which are provided on a gear, the gear being part of a gear train for the motor ... | 05/10/1983 |
| 4274152 | Setting mechanism of a watch The setting mechanism of a watch includes a winding stem and a clutch wheel which can be moved selectively either rotationally or axially by said winding stem for control of one or more setting levers or wheels. The setting levers or wheels are disposed o... | 06/16/1981 |
| 3930362 | Means for developing friction in clock setting shaft A clock "friction" for use in clocks having plastic gear wheels which permits manual setting of the hands but in which a reliable level of frictional torque is obtained without requiring use of any auxiliary parts. The centerwheel of the clock has an inte... | 01/06/1976 |