Roller or caster with electrically conductive wiper contact
US4807328A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 11, 1987 |
| Grant date | Feb 28, 1989 |
| Priority date | — |
| Expiry date | Mar 11, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C19/08
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A roller intended in particular for office furniture comprises a supporting body (1) made from a plastic material, an axle (2) mounted in the supporting body, at least one wheel (2) seated on the axle, a metallic pin (5) seated rotatably in the metallic body and arranged in offset position relative to the axle (2), in a plane extending perpendicularly to the axle, and a wiper contact conductively connected with the pin (5) and provided with a resilient portion projecting beyond the plane (20) extending perpendicularly to the pin (5) and being tangent to the at least one wheel (3). The resilient portion of the wiper contact is formed by a helical spring (12) standing substantially perpendicular to the tangential plane (20) and carrying on its free end a contact body (15) projecting beyond the tangential plane (20).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.