Joints and connections – Biased catch or latch
Patent
1986-08-22
1989-02-14
Kundrat, Andrew V.
Joints and connections
Biased catch or latch
403334, 403225, 403361, 403368, 277153, 277164, 285318, 92194, F16B 2118, F16J 1524
Patent
active
048042900
ABSTRACT:
A latching and sealing device suitable for use as a cover seal for a plunger or piston in a syringe or plunger pump includes a cylindrical seal member having a body portion and lip-and-latch means for both sealably engaging a surrounding surface and latching to the piston. A spring disposed in between the lip-and-latch means and the piston provide a constant sealing pressure while allowing the piston and seal member to be moved within a bore. Sealing between the lip-and-latch means and the bore is enhanced by use of a berm and notches radially aligned with the biasing spring.
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Balsells Joan C.
Balsells Peter J.
Cuomo Peter M.
Hackler Walter A.
Kundrat Andrew V.
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