Device for mounting an earmuff on a helmet
US4375702A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1981 |
| Grant date | Mar 8, 1983 |
| Priority date | — |
| Expiry date | Jun 17, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA42B3/166
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An attachment device in the form of a bearing housing (10) and an arm (38) projecting out through an opening (44) in the housing. The arm is supported in a bearing support (42) in the housing and serves to carry, at the end opposite the housing, an ear muff to move with a rocking motion between a stationary rest position and a position wherein the earmuff exerts a pressure around the wearer's ear. A separate spring component (44), preferably annular in form, is rotatably supported in and prestressed to bear against, on one side, an adjustable spring support (48), which is located inside the housing and remains stationary during the rocking motion, and, on the opposite side, the end (52) of the arm (38) located inside the housing. By this arrangement there is exerted on the said end of the arm a controlled force directed away from the spring support (48) for the purpose of stabilizing the arm in its two positions. The spring support may consist of a rocker, the position of that part (56) of the rocker in which the spring component is supported being adjustable against an adjusting means (16) with respect to the nearer end of the arm to permit alteration of the prestressing of the sp…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.