Apparatus for fusibly interconnecting thermoplastic pipes
US4684430A · kind A · utility
8Cited by
12References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1983 |
| Grant date | Aug 4, 1987 |
| Priority date | — |
| Expiry date | Jun 28, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2023/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Thermoplastic pipes held by a pair of clamp mechanisms are fusibly interconnected. A torque wrench moves one clamp mechanism toward the other clamp mechanism and provides a signal when the force applied is a given value. A locking mechanism is operated in response to this signal to lock the torque wrench in position. The apparatus is programmed to release the locking mechanism at the end of a predetermined time period. Changes in the programmed conditions are effected in response to changes in the size of one of the clamp mechanisms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.