Speed responsive engagement device
US9132301B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2007 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Dec 28, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B1/10
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A speed responsive engagement device having a rotating wheel having a plurality of outwardly projecting spaced apart teeth with each pair of adjacent teeth being separated by a circumferential surface with a constant radius and a pawl arranged for pivotal movement between an unengaged position and an engaged position in which the pawl engages one of the teeth and a circumferential surface and a resilient means arranged to urge the pawl towards the engaged position when the pawl is not in contact with the circumferential surface. When the wheel rotates each tooth contacts the pawl, generating an oscillating movement of the pawl with an amplitude dependent on the speed of the rotation. When the speed of rotation reaches a predetermined value the oscillating movement brings the pawl into the engaged position, preventing further rotation of the wheel in the first direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.