Pipes and tubular conduits – Repairing
Patent
1977-06-30
1979-02-20
Britts, Ramon S.
Pipes and tubular conduits
Repairing
85 79, 138 89, 220327, F16B 1306
Patent
active
041400402
ABSTRACT:
A device for locking an insert in a support having a receiving hole or sealing a tubular member such as a pipe, consists of a somewhat bottle-shaped bushing having a cylindrical collar or bushing portion, and a conical portion secured at its narrow end to said collar, an inside screw thread, and a locking ring seated on the cone adjacent to the collar. The dimensions of the collar section of the bushing, the cone and the locking ring are so correlated that bushing and locking ring fit the cross-section of the hole with slight friction when the insert is placed in the hole. Locking of the insert in the hole is effected by inserting a screw bolt or screw tightening means into the insert coaxial therewith. This causes lifting of the insert which in turn effects spreading of the locking ring thereby pressing the same against the wall of the hole. The depth to which the insert is inserted into its hole provides means for accurately regulating the degree of force applied by the expanding insert on the surrounding hole wall.
REFERENCES:
patent: 1265866 (1918-05-01), Ackerman
patent: 2568518 (1951-09-01), Smith
patent: 2850064 (1958-09-01), Rapata
patent: 3353565 (1967-11-01), Markham
patent: 3365998 (1968-01-01), Zahodiakin
patent: 3373648 (1968-03-01), Pitzer
patent: 3389923 (1968-06-01), Love et al.
patent: 3443473 (1969-05-01), Tritt
patent: 3469493 (1969-09-01), Fisher
patent: 3503431 (1970-03-01), Villo et al.
patent: 3523482 (1970-08-01), Ploch
patent: 3967525 (1976-07-01), Lerich
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