F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
F04B 53/02 (2006.01) E21B 43/12 (2006.01) F04B 47/02 (2006.01) F04B 47/12 (2006.01) F04B 53/12 (2006.01)
Patent
CA 2716685
A pressure responsive seal ring assembly includes a first and second arcuate- shaped ring segment configured for non-interlocking assembly onto a plunger body. A tab extends beyond a first end of each ring segment and is received by a recessed portion in the first end of the opposing ring segment. The tabs and recessed portions provide a gap in the outer peripheral surface of the assembled ring. A second tab extends beyond a second end of the second ring segment and is received by a recessed portion in the second end of the first ring segment. Pads provide an inter-space effective for allowing fluid flow between the interior peripheral surface and the plunger body. The ring segments expand radially outward with an increase in pressure to provide a seal and retract radially inward with a decrease in pressure. The ring segments, however, remain connected and resist fluid flow therebetween.
Borden Michael B.
Whitmarsh Milton
Borden Michael B.
Ridout & Maybee Llp
LandOfFree
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