Closure device with dual-mandrel-acutated peripheral seal

Details Closure device with dual-mandrel-acutated peripheral seal Closure device with dual-mandrel-acutated peripheral seal

1993-05-04

1995-04-04

Bryant, III, James E.

Pipes and tubular conduits

With closures and plugs

Inflatable

138 89, 576203, F16L 5512

Patent

active

054028280

ABSTRACT:
Pipe closure device with opposing dual mandrels has external conical surfaces which cooperate with internal conical surfaces of segmented rigid wall engagement member. Rotation of threaded shaft causes relative axial movement of dual mandrels and effects outward radial motion of rigid wall engagement members and outward motion of elastomeric seal, securing device to wall of pipe and sealing pipe closed. Rotation of shaft in opposite direction releases elastomeric seal and rigid wall engagement members from pipe wall. Inflatable seal seals against inside wall of pipe when inflated. Shaft is rotated by air-powered motor which is insertable and attachable into sealed receiver without use of tools.

REFERENCES:
patent: 2855003 (1938-10-01), Thaxton
patent: 3025606 (1962-03-01), Turner
patent: 3254012 (1966-05-01), Ziegler
patent: 3593749 (1971-07-01), Reardon
patent: 3882382 (1975-05-01), Johnson
patent: 3971416 (1976-07-01), Johnson
patent: 4013924 (1977-03-01), Cristensen et al.
patent: 4029889 (1977-06-01), Mizuochi
patent: 4250926 (1981-02-01), Satterthwaite
patent: 4288654 (1981-09-01), Blom et al.
patent: 4487057 (1984-12-01), Lutz
patent: 4518015 (1985-05-01), Fischer
patent: 4637588 (1987-01-01), Wilhelm et al.
patent: 4797621 (1989-01-01), Anderson et al.
patent: 4800128 (1989-01-01), Schacht et al.
patent: 4827984 (1989-05-01), Young et al.
patent: 4848406 (1989-07-01), Stauner et al.
patent: 5119861 (1992-06-01), Pino
patent: 5172730 (1922-12-01), Driver
patent: 5293905 (1994-03-01), Friedrich

Affiliated with

Also associated with

Rating

Closure device with dual-mandrel-acutated peripheral seal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Closure device with dual-mandrel-acutated peripheral seal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Closure device with dual-mandrel-acutated peripheral seal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2375222