Telescopic structure
US3934616A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 27, 1974 |
| Grant date | Jan 27, 1976 |
| Priority date | — |
| Expiry date | Feb 27, 1994 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B7/14
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A telescopic structure comprises an inner and an outer member telescopic relative to each other, and means for supporting and/or guiding one member relative to the other member, comprising a pair of wheels mounted on each member and positioned between the members, the wheels on one member bearing on parallel runways fixed to the other member, the runways each having an at least partly circular section with the peripheral surfaces of the wheels bearing on the runways being correspondingly toroidally shaped to have geometric projections in a plane perpendicular to the direction of extent of the runways extending parallel and perpendicular to the rotational axes of the wheels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.