Suspension of pipe spinner
US4425827A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 23, 1982 |
| Grant date | Jan 17, 1984 |
| Priority date | — |
| Expiry date | Feb 23, 2002 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/168
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A pipe spinner is provided which includes two parts carrying rollers and mounted by two pivotal connections for swinging movement between a closed position in which the rollers grip and drive a well pipe or the like and an open position releasing the pipe, with an adjustable connection attaching the two pivotal connections together for relative lateral movement to shift the two pivotal axes toward and away from one another for gripping different sizes of pipe, and with the spinner including a hanger or support structure attached to the mentioned adjustable connection and adapted to be suspended by a line or other element in a manner suspending the entire tool through the adjustable connection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.