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Class Information
Number: 74/424.5
Name: Machine element or mechanism > Gearing > Directly cooperating gears > Spiral
Description: Gearings of the spiral type.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7552662 |
Novolute geometry for power gears |
Jun. 30, 2009 |
| 7475584 |
Servo-drive system and continuous finishing system of press |
Jan. 13, 2009 |
| 7472619 |
Gear unit |
Jan. 6, 2009 |
| 7464620 |
Actuator |
Dec. 16, 2008 |
| 7421922 |
Device for linearly moving a useful mass |
Sep. 9, 2008 |
| 7346992 |
Hand-held power tool with angle drive |
Mar. 25, 2008 |
| 6991573 |
Steering actuator of independent steer-by-wire system |
Jan. 31, 2006 |
| 6609440 |
Structure of a variable transmission device |
Aug. 26, 2003 |
| 6089116 |
Gearing stage |
Jul. 18, 2000 |
| 5295433 |
Value selection mechanism including means for weakening a shaft thereof |
Mar. 22, 1994 |
| 5247846 |
Quick disconnectable screw device |
Sep. 28, 1993 |
| 5129276 |
Meshing gear members |
Jul. 14, 1992 |
| 5074831 |
Limited-slip differential with meshing pairs of worms |
Dec. 24, 1991 |
| 5060531 |
Screw rotor |
Oct. 29, 1991 |
| 4955248 |
Angular gear for venetian blinds |
Sep. 11, 1990 |
| 4695233 |
Screw rotor mechanism |
Sep. 22, 1987 |
| 4656884 |
Power transmission mechanism |
Apr. 14, 1987 |
| 4649814 |
Rotary value selector device |
Mar. 17, 1987 |
| 4615230 |
Gear transmission comprising two worms |
Oct. 7, 1986 |
| 4478103 |
Worm gear mechanism |
Oct. 23, 1984 |
| 4416168 |
Transmission and sub-transmission with mutually contending helical gears |
Nov. 22, 1983 |
| 4307629 |
Torque converter |
Dec. 29, 1981 |
| 4297919 |
Mechanical power transmission method and means |
Nov. 3, 1981 |
| 4164154 |
Transmission for two-worm press with counter running worms |
Aug. 14, 1979 |
| 4147223 |
Logging-while-drilling apparatus |
Apr. 3, 1979 |
| 4144775 |
Transmission for a two-worm press with counter running worms |
Mar. 20, 1979 |
| 4142422 |
Speed ratio change mechanism |
Mar. 6, 1979 |
| 3969956 |
Transmission for multiscrew extruder |
Jul. 20, 1976 |
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