Adjustable fastening device
US4370898A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 20, 1980 |
| Grant date | Feb 1, 1983 |
| Priority date | — |
| Expiry date | Aug 20, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/32336
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A device for fastening a first member such as a head rest relative to a second member such as a head rest supporting member in an inclining adjustable manner, including a one-way ratchet and pawl mechanism incorporated between the two relatively rotatable members, wherein the pawl is driven out of engagement with the ratchets when the two relatively rotatable members have been brought to an extreme relative position allowed by one-way sliding engagement of the ratchets and the pawl, and a control member which catches and holds the driven up pawl at the extreme relative rotational position and releases the pawl when the two relatively rotational members have been brought to the other extreme relative rotational position so as to make the pawl again engage the ratchets at the second mentioned relative rotational position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.