Valves and valve actuation – Tube compressors – Perpendicularly reciprocating tube contacting element
Patent
1982-09-10
1984-08-28
Schwadron, Martin P.
Valves and valve actuation
Tube compressors
Perpendicularly reciprocating tube contacting element
251 10, F16L 5514
Patent
active
044679971
ABSTRACT:
A portable device, capable of being hand carried to a selective location along the length of a fire hose at the scene of a fire, is adapted to be swiftly and easily opened by reason of a hinged relationship of its basic parts, to receive the hose. When swung to a closed position about the hose, the clamping device automatically latches and locks in the closed position, to locate stationary and movable jaws at diametrically opposite points on the hose. Then, by operation of a hydraulic means incorporated directly in the device, the movable jaw is forced toward the stationary jaw, to clamp off the hose. The jaws have a particular configuration adapting the same to tightly clamp the hose against any leakage of water therethrough. For this purpose, the stationary jaw, in the sense of the transverse dimension of the hose, is shallowly depressed to define a cradle that will center the hose for clamping purposes, with the upper jaw having a mating convexity in the sense of the transverse dimension of the clamped object. The stationary jaw is also formed with upwardly convergent surfaces arranged to define a low, rounded clamping surface that will extend across the full diameter of the hose and that follows the shallow concavity defined by the cradle, while the movable upper jaw has downwardly convergent surfaces defining a gently rounded clamping surface cooperating with that of the stationary jaw. The clamping surface of the upper jaw mates with the lower jaw by reason of having a convexity complementing the concavity defined by the cradle.
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Novack Sheri
Schwadron Martin P.
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