Worm gearing with overload applied brake
Abstract
Abstract 1,227,010. Door or window operating mechanism. ROBERT BOSCH G.m.b.H. 7 June, 1968 [9 June, 1967], No. 27204/68. Heading E2M. [Also in Division F2] A device for the opening and closing of windows, doors or sliding roofs comprises a worm 24 connected to the armature 19 of a reversible electric motor, without the interposition of a slipping clutch, the worm being associated with a brake 52, 53 and being axially displaceably mounted so that during the closing movement, axial thrust exerted by a worm-wheel 25 on the worm overcomes the force of a spring 48 and axially displaces the worm 24 so that the brake 52, 53 retards rotary movement of the worm 24. Wormwheel 25 is mounted on a shaft 26 which carries a pinion 27 meshing a toothed segment 29 incorporating an operating arm 30. Preloading of spring 48 can be adjusted by means of a screw 49.
Inventors
- 👤 Wilhelm Hertfelder
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |