Means for securing an observation instrument to a supporting stand
US4447139A · kind A · utility
20Cited by
6References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 3, 1981 |
| Grant date | May 8, 1984 |
| Priority date | — |
| Expiry date | Dec 3, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/32311
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention contemplates a universal-action joint for adjustable mounting of an observation instrument upon a support, such as a conventional floor stand. The joint is of the ball and socket variety but incorporates two separate means for frictionally loading the parts against relative displacement. The first of these loadings is resilient and at a minimum level, designed to lightly retain an adjusted positioning; the second loading is selectively applied for much greater frictional engagement, to the point of effectively locking the parts against dislodgment from adjusted position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.