Device for releasing a screw jack mechanism
US5921714A · kind A · utility
10Cited by
10References
17Claims
0Family size
Inventor
Key dates
| Filing date | Oct 16, 1997 |
| Grant date | Jul 13, 1999 |
| Priority date | — |
| Expiry date | Oct 16, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B2200/63
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A device for releasing of a frozen screw pressed against a contact surface uses a compression disc pre-loaded to an anticipated amount of deflection prior to mounting between the contact surface and the screw. The disc has an insert formed from a granulated material mixed with a water soluble binder, allowing to wash out the insert and cause collapse of the disc, so as to break the connection between the contact surface and the screw.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.