Stuffing box sheave assembly with retention pad
US6105939A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1998 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Apr 3, 2018 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/072
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A stuffing box sheave assembly includes a brace having a tubular collar positioned at one end and a pair of spaced apart forked arms outwardly projecting from the opposing end. A nylon wheel is rotatably mounted between the forked arms. The wheel has an annular grooved recessed around the circumference thereof. The groove is configured to receive a wireline. An arcuate shroud is positioned over a portion of the circumference of the wheel. A pair of spaced apart retention pads are mounted to the shroud. Each of the pads are configured to be received within the groove of the wheel so as to prevent accidental jumping of the wireline out of the groove. A pair of tubular posts project from opposing sides of the shroud and are selectively received within the channel of a tubular member upwardly projecting from each forked arm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.