Tension indicating washer unit
US4072081A · kind A · utility
22Cited by
13References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1977 |
| Grant date | Feb 7, 1978 |
| Priority date | — |
| Expiry date | Jun 6, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B31/028
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A multipiece, preassembled washer unit incorporating an upper washer and a lower conical washer with a ring gauge interposed between the outer marginal surfaces of the washers so that the gauge is clamped between the superimposed washers upon compression of the unit to a predetermined amount. The clamping of the gauge being indicative of a predetermined accurate tension level in the joint. The ring gauge including means to accurately size itself and thereby accommodate and/or minimize errors due to tolerances in cold headed clamping members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.