Pipes and tubular conduits – End protectors – Threaded
Patent
1975-07-29
1977-07-19
Artis, Henry K.
Pipes and tubular conduits
End protectors
Threaded
138 89, F16L 5700, B65D 5906
Patent
active
040362612
ABSTRACT:
A pneumatically-operated thread protector for casing pipe, etc., has a thick rubber bladder which extends on (a) the outside, (b) the inside, and (c) the extreme end of the pipe, such bladder being generally U-sectioned or hairpin-sectioned. Provided around and within the bladder is a shock-resistant and wear-resistant metal housing which is also U-sectioned or hairpin-sectioned generally correspondingly to the bladder. Means are provided to seal the lips of the bladder to the housing, and to prevent the housing from shifting off the inflated bladder, in such manner as to permit substitution of new bladders yet to (a) maintain effective air seals, and (b) maintain the parts in assembled condition despite the effects of tremendous loads and shocks. Means are provided to inflate the bladder so that it will grip or grasp tightly the exterior and interior cylindrical surfaces of the pipe end, thus minimizing the possibility of accidental demounting of the protector from the pipe. The air further creates self-centering and shock-resistant actions, and strengthens from within the relatively lightweight and dentable shell portion of the housing -- such shell being formed of spun sheet steel.
REFERENCES:
patent: RE18184 (1931-09-01), Brown et al.
patent: 1170439 (1929-04-01), Taylor
patent: 1498563 (1924-06-01), Morrison et al.
patent: 1862858 (1932-06-01), Lyon
patent: 2215251 (1940-09-01), Prince
patent: 2513613 (1950-07-01), Baker
patent: 2518981 (1950-08-01), Edwards
patent: 2523930 (1950-09-01), Unke
patent: 2547992 (1951-04-01), Baker
patent: 2559564 (1951-07-01), Sperling
patent: 2725898 (1955-12-01), Stansbury
patent: 2729245 (1956-01-01), Northrop
patent: 2732864 (1956-01-01), Stansbury
patent: 2745438 (1956-05-01), Bloom
patent: 2747617 (1956-05-01), Walden
patent: 2824579 (1958-02-01), Groh et al.
patent: 2927609 (1960-03-01), Vander Lans
patent: 2977993 (1961-04-01), Scherer
patent: 2989087 (1961-06-01), Higgins
patent: 3000402 (1961-09-01), Bowman, Jr.
patent: 3450163 (1969-06-01), Mercier et al.
patent: 3485271 (1969-12-01), Halsey
patent: 3572389 (1971-03-01), Wietand
patent: 3719984 (1973-03-01), Frishof
patent: 3858613 (1975-01-01), Muzzlewhite
(Advertisement sheet), "Quick-E" Air-Type Thread Protector, B. J. Stansbury, Inc., Bakersfield, Calif.
(Advertisement sheet), "Quick-E" Hydraulic Thread Protector, B. J. Stansbury, Inc., Bakersfield, Calif.
(Advertisement sheet), "Sphere" Mechanical Thread Protector, Sphere Development Ltd, of Edmonton, Alberta, Canada.
Carstensen Kenneth J.
Hauk Ernest D.
Hauk Thomas D.
Artis Henry K.
Gausewitz Richard L.
Service Equipment Design Co., Inc.
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