Extendable/retractable operational sleeve
US4944711A · kind A · utility
12Cited by
13References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1989 |
| Grant date | Jul 31, 1990 |
| Priority date | — |
| Expiry date | Feb 22, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C1/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An extendable/retractable operational sleeve is composed of a main sleeve portion and a movable sleeve portion movable in the axial direction in a telescopic manner relative to the main sleeve portion. A stop member for limiting outward separation of the movable sleeve portion of the operational sleeve is integrally formed with a bearing for supporting a main transmission shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.