Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 8042423 | Backlash-compensating gear train for horological mechanism At least some of the uniformly distributed teeth of one of the antibacklash partner toothed wheel units, of this backlash-compensating gear train for a horological mechanism, have elastic parts (DR) that are flexible in the direction of the respective thi... | 10/25/2011 |
| 8011267 | Toothed mobile part for play take-up in a gear, particularly in horology A toothed mobile part (1) for play take-up in a gear, particularly in horology, having certain (7) of its teeth fixed and entirely rigid, and other (8) of its teeth each intercalated between two rigid teeth (7) and elastically deformable,... | 09/06/2011 |
| 7836786 | Flat type wave gear device A flat type wave gear device is realized having a much improved load capacity. When d is an amount of radial flexing at a major axis location of a rim neutral circle of the flexible external gear of a flat type wave gear device flexed into an elliptical shape and t ... | 11/23/2010 |
| 7698964 | Gear A gear having a thin-walled section formed on one end face among two end faces of a tooth in a tooth-width direction is provided. A portion of the thin-walled section is projected and formed so as to serve as an overhanging section. The overhanging section prevents ... | 04/20/2010 |
| 7673535 | Gearwheel set for a transmission In a gearwheel set for a transmission, in particular for a transmission with a PTO (Power Take-Off) accessory, at least two gearwheels (6, 10) bearing against one another, and the gearwheels (6, 10) being rotatable in relation to one another, and both ... | 03/09/2010 |
| 7415907 | Resin double helical gear and gear train using same A gear train for an ink jet printer includes an output gear of a motor, a first idle gear meshing with the output gear, a second idle gear rotatable with the first idle gear, and a driven gear which is mounted on a roller shaft so as to be rotatable therewith and wh... | 08/26/2008 |
| 7258037 | Gear protected against overloading The invention concerns a gear for precision devices comprising at least two mutually co-operating toothed wheels (10, 14). The teeth (12, 16) of the two wheels have the same thickness (e) and the teeth of one of them (10) are provided with a rad... | 08/21/2007 |
| 7191521 | Advanced geometry of skew and straight bevel gears produced by forging The present invention provides for bevel gears having a localized and stable bearing contact. The localization of bearing contact is achieved by substitution of flat tooth surfaces with parabolic tooth surfaces. This is accomplished by either modifying line-contact ... | 03/20/2007 |
| 7155995 | Injection molded resin gear, injection molded resin rotating body, and injection molded article An injection molded resin gear 1 has a rim 6 having teeth 7 on its outer periphery, a hub 4 for receiving therein a shaft, and a web 6 connecting the rim 6 to the hub 4. The thickness (t1) of the bottom 15 | 01/02/2007 |
| 7117759 | Wave gear drive with wide mesh three-dimensional tooth profile A wave gear drive in which wide-area meshing of the rigid internal gear and flexible external gear is achieved, reducing stresses on the bottom rim of the gear teeth and in the vicinity of the major axis of the inner ring surfaces of the wave generator, thereby impr... | 10/10/2006 |
| 7104170 | Air release stock stop An air release stock stop for detecting the end of a bar stock during a machining process on a turning machine. The air release stock stop includes a pivot member hingedly connected to a base member by a shaft, an activation member adjustably connected through the p... | 09/12/2006 |
| 7069805 | Driving force transmission device A driving force transmission device includes a rim having a toothed outer periphery, with bottom lands being formed between respectively adjacent teeth and top lands being formed at teeth crests. Outer ribs are disposed at positions on an inner peripheral surface of... | 07/04/2006 |
| 7004046 | Gear made of resin, image forming device having the resin gear and rotary gearing device made of resin A gear made of a resin including substantially annular toothed portion formed at a radially outer location, a shaft-supporting section formed at a radially inner location around a rotational center of the toothed portion, and a web connecting the shaft-supporting se... | 02/28/2006 |
| 6941832 | Injection molded resin gear, injection molded resin rotating body, and injection molded article An injection molded resin gear 1 includes a rim 4, a hub 3 and a web 5 which connects the rim 4 to the hub 3. A plurality of ribs 7 for guiding a molten resin, which is injected from pin point gates 8, to the h... | 09/13/2005 |
| 6918181 | Gear tooth topological modification for reducing noise and vibration in transmission systems A method for improving acoustic and vibrational properties of gears includes determining the transmission errors of intermeshing gears due to stiffness variations in the gear teeth, performing Gear Tooth Topological (GTT) modifications to compensate for the errors, ... | 07/19/2005 |
| 6915716 | Roller/damper assembly A roller/damper is configured for use with an associated sliding object such as a drawer that is movable between a first position and a second position along a rail having a rack gear disposed thereon. The roller/damper includes a roller having an outside diameter t... | 07/12/2005 |
| 6872158 | Silent chain transmission device In a transmission having a silent chain meshing with a sprocket, each link plate of the chain includes inside engaging surfaces and outside engaging surfaces having the same shape as that of a tooth profile of a hob cutter for shaping the sprocket teeth. The sprocke... | 03/29/2005 |
| 6799489 | Wave gearing with three-dimensional deviatedly meshed tooth profile In a principal section of the flexible external gear of a wave gear drive, a position away from the major axis of an elliptically shaped neutral line of the rim of the flexible external gear is defined as the center position of the teeth meshing, and θ is the angle... | 10/05/2004 |
| 6782773 | System for coupling a toothed starter ring to a support connected to the output shaft of an internal combustion engine In a system for coupling a toothed starter ring to a support connected to the output shaft of an internal combustion engine, a complementary substantially cylindrical peripheral surface of the ring is fixed over at least a part of its extent to a substantially cylin... | 08/31/2004 |
| 6752035 | Gear made of resin, image forming device having the resin gear and rotary gearing device made of resin A gear made of a resin including substantially annular toothed portion formed at a radially outer location, a shaft-supporting section formed at a radially inner location around a rotational center of the toothed portion, and a web connecting the shaft-supporting se... | 06/22/2004 |
| 6688695 | Inclination adjustment lock for seat backs In an inclination adjustment lock for partial areas of seats, such as seat backs, a first lock part is firmly attached to a first partial area and a second lock part is attached to a second partial area. Both partial areas are connected together so that t... | 02/10/2004 |
| 6497041 | Method of producing resin gear In a method of producing a resin gear, after applying a gear cutting having a gear cutting direction toward the gate forming portion onto an outer periphery surface of a resin rim layer, the gate forming portion is cut and removed.... | 12/24/2002 |
| 6467375 | Flexible meshing type gear device having deflection meshing involute tooth profile A flexible meshing type gear device has a rigid internal gear, a flexible external gear disposed inside the internal gear and a wave generator for flexing the external gear into an elliptical shape. One circle of curvature at the point of contact of the i... | 10/22/2002 |
| 6349607 | Transfer ring for continuously variable transmission A transfer ring (10) for a continously variable transmission. The transfer ring (10) includes an inner ring (12), an outer ring (18) and a spacer ring (24). The inner, outer and spacer rings are substantially coaxial with a transfer ring (10) axis. The sp... | 02/26/2002 |
| 6112611 | Gear with modified tooth surface and gear tooth surface modification method A curvature of a locus of contact points at a higher torque value is increased such that the torque-dependent characteristic of the working transmission error assumes a minimum value in the vicinity of a working torque value T1 at the tooth sur... | 09/05/2000 |
| 6055880 | Transfer ring and gear arrangement for non-slip continuously variable transmission A continuously variable transmission (10) having input (12) and output (14) gearsets each having a pair of bevelled gears (16) rotatable about generally coplanar respective axes of rotation (22) and with the two bevelled faces (24) in a spaced-apart paral... | 05/02/2000 |
| 5946516 | Attachment structure for attaching a lens unit for a camera body An interlock ring is provided to transmit a rotational force of a casing of a lens unit to a attachment ring, and contact faces of a projection of the attachment ring and a projection of the interlock ring are slant. Thereby, the stress is prevented from ... | 08/31/1999 |
| 5911788 | Compliant gear A radially compliant gear is provided to reduce transmitted shock loads and/or resist jamming as a result of debris entering its mesh with another gear. The radially compliant gear includes a hub adapted to rotate about an axis, and a compliant rim. The h... | 06/15/1999 |
| 5852951 | Composite gear and method of making same A composite gear includes one or more metal stamped plates, and two thermoplastic layers disposed on opposite sides of the plates. Apertures are provided in the stamped metal plates so that the molten thermoplastic material may flow through the apertures ... | 12/29/1998 |
| 5636550 | No-backlash gearing mechanism A no back-lash gearing mechanism comprises meshing toothed elements. At least one of the toothed elements has a number of teeth having an undulated, "S"-shaped, transverse section. The teeth are arranged such that, when the toothed elements mesh, one of t... | 06/10/1997 |
| 5596905 | Oscillation damping gear An oscillation damping gear including a gear member generally in the form of a chrysanthemum, having teeth and radial grooves defined between and by adjacent teeth, and an oscillation damping member having oscillation damping elements fitted in the radial... | 01/28/1997 |
| 5400672 | Gear with inset O-ring for setting backlash A gear assembly reduces gear wear by insuring that the backlash of a pair of gears is at a desired setting. A first gear in the gear assembly resiliently displaces another gear outwardly away from the first gear to achieve a desired backlash setting.... | 03/28/1995 |
| 5224391 | Device for connecting two gear elements Device for connecting two drive elements 2 and 3 whose engagement flanks 20, 30 opposite one another are rollable positively on one another, with one drive element 3 being connected with at least one support surface 4 with a base 1 whose total length is l... | 07/06/1993 |
| 5083474 | Zero transmission error gearing The usual expedient employed by gear designers seeking to reduce gear noise at all loads has been to specify finer teeth, which in effect trades away torgue capacity for quietness. The present disclosure describes a tooth form that substantially eliminate... | 01/28/1992 |
| 5046378 | Anti-jamming gear arrangement A gear arrangement includes a first gear wheel 10 having a section 12 with missing teeth. A second gear wheel 14 is arranged to mesh with the first gear wheel 10. The first tooth 16 on the first gear wheel 10 to engage with the second gear wheel 14 (follo... | 09/10/1991 |
| 4944196 | Conjugate gear system A conjugate gear system including a pair of meshingly engageable toothed gears, at least one member of the gear pair having at least one three-component tooth. Each three-component tooth is comprised of a central core, at least one face disposed thereon, ... | 07/31/1990 |
| 4913567 | Head-pressure mechanism in thermal printer A printer wherein printing is effected while a print head and a recording medium are moved relative to each other with the print head in pressed contact with the medium. The printer includes a print-head support member for supporting the print head movabl... | 04/03/1990 |
| 4819975 | Engine starter motor An engine starter motor comprises a d.c. motor and a transmission device of high reduction ratio, the d.c. motor having an output shaft connected through the transmission device to an input shaft of an engine. The transmission device includes a wave gener... | 04/11/1989 |
| 4703670 | Wave gear drive and gear generating method A wave gear drive comprises a rigid gear, a flexible gear engaging at a plurality of bulged regions thereof with the rigid gear, and a wave generator for causing the flexible gear to perform wave motion. The number of gear teeth between adjacent bulged re... | 11/03/1987 |
| 4685347 | Indexable star wheel A star wheel is formed with angularly spaced teeth and intervening pockets and is indexed through one step each time a rotatable actuating pin enters one of the pockets. One of the teeth has a significantly greater angular width than the other teeth and h... | 08/11/1987 |
