Tilt-adjustable head rest having ratcheting mechanism
US5238295A · kind A · utility
34Cited by
0References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 22, 1992 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Jul 22, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2/809
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tilt-adjustable head rest assembly (10) includes a hollowed headrest body (12) pivotally connected to a U-shaped mounting post (14). A ratcheting mechanism (104) is disposed within the headrest body (12) and includes a ratchet (108) interacting with a rack of ratchet teeth (106). The ratchet (108) has an elongate U-shaped support member (112) pivotally carrying a pawl member (110). An extension spring (116) extends between the pivot pin (114) and the support arm (112) for selectively biasing the pawl member (110) between an upstanding operable position and a knocked-down inoperable position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.