Fluid handling – With lock or seal – Locks against rotary motion
Patent
1982-02-12
1983-03-22
Cohan, Alan
Fluid handling
With lock or seal
Locks against rotary motion
70177, F16K 3500
Patent
active
043771785
ABSTRACT:
An anti theft locking device is provided and consists of a casing having a longitudinal passage therethrough and a transverse tapered bore intersecting the passage, tapered plug having an aperture with a top square head portion on the larger end of the plug, the plug fitted for rotation in the tapered bore to control the passage and a locking cover for preventing rotation of the top square head portion of the plug.
REFERENCES:
patent: 1104022 (1914-07-01), Tuttle
patent: 1275135 (1918-08-01), Cunningham
patent: 2092572 (1937-09-01), Deane
patent: 2309304 (1943-01-01), Creighton
patent: 3406708 (1968-10-01), Maydoch
Cohan Alan
Miller Richard L.
Rivell John A.
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