Centrifugal force responsive J-shaped pawl for clutch
US10883555B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2019 |
| Grant date | Jan 5, 2021 |
| Priority date | — |
| Expiry date | Aug 16, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D41/069
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A one-way ratchet overrunning clutch includes first and second concentric races, the first race having pockets configured to contain pawls, each pocket including a boss having an exterior convex surface defining an arc of about 180°. Each pawl is supported on one boss, and is adapted to ratchet about the boss to selectively lock the races together. Each pawl has a J-shaped body including a pair of legs joined by a hook portion that with one of the legs defines a concave surface. The concave surface is configured to partially engage a complementary exterior convex surface of a corresponding boss, and the concave surface defines an arc ranging from 90° to at least 150° adapted to circumscribe an identical range of the convex surface of the corresponding boss. The interactive convex and concave surfaces of respective pawl and boss elements provide an effective pawl retention system under centrifugal forces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.