Ear-pads and assembly procedure
US4133053A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 1977 |
| Grant date | Jan 9, 1979 |
| Priority date | — |
| Expiry date | Sep 28, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/1066
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The casings for two ear-pads are adjustably mounted on opposite ends of an arcuate headband by means of a pair of rivet-like elements, each of which extends through an elongate slot in one end of the headband, and a central opening in the associated ear-pad casing. Each rivet-like element has an enlarged-diameter cylindrical head on its inner end and an enlarged, rectangular head on its outer end which is slidable in a correspondingly shaped recess in the headband to allow adjustment of each casing in the longitudinal direction of its associated slot. A plurality of flexible, washer-like supporting members are pressed over the inner end of each element resiliently to engage opposite sides of a casing around its central opening frictionally to resist movement of each casing relative to the headband.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.