Self sealing hydraulic coupler
AssigneeVetco Gray Inc.
InventorKarl A. Parfrey
Life of this patent
Estimating the term…
Abstract
A hydraulic coupler for providing fluid communication between adjacent members that includes a two way check valve formed from a double headed poppet set in a hollow cylinder with corrugated bellows like walls. Contoured bores are provided in the cylinder ends and the poppet heads are profiled to match the contour of the bores. When the heads are seated in the bores they form a sealing surface to block fluid from flowing through the coupler. Compressively preloading the cylinder before assembly provides a sealing force between the heads and the bores. Axially compressing the cylinder with respect to the poppet unseats the heads from the bores to form a flow path through the coupler.
Claims10
A hydraulic coupler for communicating fluid between a first and a second member, the coupler comprising:
- an axially compliant tubular,
- a first base connected to a first end of the tubular having a side in pressure communication with a region ambient to the second member,
- a bore extending through the first base,
- a second base connected to a second end of the tubular having a side for pressure communication with a passage formed in the second member,
- a bore extending through the second base;
- an elongated shaft coaxially disposed within the tubular;
- on an end of the shaft, a first head seated against the first base and defining a pressure seal between the first base bore and the region ambient to the second member, and
- on an end of the shaft opposite the first head, a second head seated against the second base and defining a pressure seal between the second base bore and the passage formed in the second member.
-19. (canceled)
Dependencies are inferred from the claim text.