Method and system maintaining tightness between parts rotating i

Details Method and system maintaining tightness between parts rotating i Method and system maintaining tightness between parts rotating i

1987-12-09

1990-01-23

Callaghan, Thomas F.

Pipe joints or couplings

With assembly means or feature

285 97, 285 98, 285281, 285351, 277 34, 277 27, 277 28, 277227, F16L 1702

Patent

active

048953946

ABSTRACT:
A system for maintaining a tightness between two parts rotatable relative to each other. The system includes at least two sealing units, with each of the sealing units having at least two possible states or conditions, namely, a first state or condition for ensuring a tightness between the two parts and a second state or condition wherein it does not ensure a tightness. Each sealing unit is deformable and includes a drive arrangement for intermittently actuating each of the sealing units.

REFERENCES:
patent: 2016154 (1935-10-01), McWhirter
patent: 2310309 (1943-02-01), Orr
patent: 2444868 (1948-07-01), Allen et al.
patent: 2553750 (1951-05-01), Cole
patent: 2597514 (1952-05-01), Nash
patent: 2648554 (1953-08-01), Gilbert, Sr.
patent: 2676823 (1954-04-01), Olson et al.
patent: 2835329 (1958-05-01), True
patent: 3023995 (1962-03-01), Hopkins
patent: 3080732 (1963-03-01), Crankshaw
patent: 3207221 (1965-09-01), Cochran et al.
patent: 3471156 (1969-10-01), Burns et al.
patent: 3608912 (1971-09-01), Templin et al.
patent: 3679217 (1972-07-01), Lesiechi
patent: 3737179 (1973-06-01), White, Jr.
patent: 3834181 (1974-09-01), Strasburg et al.
patent: 3874706 (1975-04-01), Arnold
patent: 3947009 (1976-03-01), Nelmark
patent: 3995448 (1976-12-01), Wright
patent: 4236737 (1980-12-01), Herbert et al.
patent: 4255946 (1981-03-01), Hansen
patent: 4276758 (1981-07-01), Coman et al.
patent: 4323280 (1982-04-01), Lansberry et al.
patent: 4438957 (1984-03-01), Williams et al.

Affiliated with

Also associated with

Rating

Method and system maintaining tightness between parts rotating i does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and system maintaining tightness between parts rotating i, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system maintaining tightness between parts rotating i will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-642060