Apparatus for driving rod for rotation
US4702123A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 9, 1985 |
| Grant date | Oct 27, 1987 |
| Priority date | — |
| Expiry date | May 9, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2063
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A rod actuator which includes a d.c. motor, a reduction gearing, a solenoid assembly which is used to define an intermediate stop position, and rotation stops. The angular extent through which an output shaft of the reduction gearing is rotatable is limited by a pair of limit stops. The solenoid assembly includes a plunger which is located intermediate the limit stops. A rotational stop is rotatably mounted on the output shaft and has a projection which is adapted to abut against the plunger to cease the motion of the rotational stop. The rotational stop is mounted on the output shaft so as to be rotatable relative thereto through a small angle by a lost motion, but is driven for integral rotation with the output shaft when such angle is exceeded. A lost motion connector is used so the angles of rotation where the rotation of the output shaft is stopped by the plunger during its clockwise and counter-clockwise rotations will be substantially equal. The actuator may be used in a shock absorber mounted on a vehicle to establish three levels, "high", "medium" and "low", of attenuation exhibited by the shock absorber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.