Mechanical arm with two link members
US4630185A · kind A · utility
Inventor
Key dates
| Filing date | Oct 30, 1985 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | Oct 30, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V21/088
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A mechanical arm has a free end that can be positioned in an almost infinite number of locations relative to a fixed end. The mechanical arm may be used as a free position lamp. The arm is free standing in the location without the use of counter balance or springs. The arm comprises a fixed end base and a free end portion with a pair of spaced apart separate link members therebetween, each link member is substantially the same and each has a first goose neck portion with a rotatable connection to the fixed base, a first rigid rod between the first goose neck portion and a second goose neck portion and a second rigid rod between the second goose neck portion and a rotatable connection to the free end portion, a first flexible spacer between the first rigid rods in the pair of link members and a second flexible spacer between the second rigid rods in the pair of link members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.