Pipes and tubular conduits – With closures and plugs – Inflation stem type
Patent
1974-10-21
1976-04-13
Aegerter, Richard E.
Pipes and tubular conduits
With closures and plugs
Inflation stem type
285DIG2, 220318, F16L 5510
Patent
active
039497879
ABSTRACT:
An improved pipe cap comprises a cover and a U-shaped handle pivotally connected thereto. The handle includes a pair of rounded lugs which are adapted to engage an annular groove in the pipe end when the pipe cap handle is rotated toward its locking position. When the handle is rotated away from the locking position and towards the unlocking position, the lugs cooperate with the groove so as to cam the cover off of the pipe end. This novel camming action helps to overcome the resistance frequently associated with breaking the seal between a pipe end and a pipe cap.
An alternate embodiment of the improved pipe cap is fitted with lugs having a pronounced flat on one side. The alternative cap is intended to fit on a pipe adapter having a flat locking rim instead of a groove. The rim includes two slots 180.degree. apart which are engagable by an appropriate wrench to thread the adapter onto a fill pipe. The lugs on the cap are located in such a manner that at most only one lug can fall into a slot. This feature prevents both lugs from becoming simultaneously stuck in the slotted ring.
REFERENCES:
patent: 1312626 (1919-08-01), Grannis
patent: 2779616 (1957-01-01), Houghton
patent: 3394836 (1968-07-01), Millard
Aegerter Richard E.
Footland L.
Universal Valve Company, Inc.
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