Dual diameter bushing/seal for mine roof bolt

Details Dual diameter bushing/seal for mine roof bolt Dual diameter bushing/seal for mine roof bolt

1980-09-29

1981-11-17

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Rock or earth bolt or anchor

277208, E21D 2000, E21D 2100

Patent

active

043008593

ABSTRACT:
A bushing/seal assembly for providing an airtight seal between the shaft of a mine roof bolt and a roof bolt hole includes a body having first and second flexible skirts extending outwardly from the body, the diameter of the first skirt being less than the diameter of the second skirt in order to facilitate adequate sealing with both standard size and slightly overside roof bolt holes. A rigid stabilizing washer engages the flexible body, the roof bolt shaft and the wall of the roof bolt hole in order to prevent excessive tilting of the roof bolt assembly after anchoring thereof in the roof bolt hole.

REFERENCES:
patent: 2952129 (1960-09-01), Dempsey
patent: 3057408 (1962-10-01), Griffitts
patent: 3212269 (1965-10-01), Olsen
patent: 3247905 (1966-04-01), Baker
patent: 3487753 (1970-01-01), Read et al.
patent: 3504498 (1970-04-01), Triplett
patent: 4103498 (1978-08-01), Steinborn et al.

Affiliated with

Also associated with

Rating

Dual diameter bushing/seal for mine roof bolt does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dual diameter bushing/seal for mine roof bolt, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual diameter bushing/seal for mine roof bolt will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1290321