Hydraulic coupling

Details Hydraulic coupling Hydraulic coupling

2005-06-14

2005-06-14

Bochna, David (Department: 3679)

Pipe joints or couplings

With means blocking release of holding means

Lock nut or washer

C285S386000, C285S092000, C285S322000

Reexamination Certificate

active

06905142

ABSTRACT:
An improved hydraulic coupling includes a fitting and a nut that are threadably connectable together. The fitting includes a generally annular groove having a lateral frusto-conic engagement surface. The nut includes a plurality of elongated fingers that each include a projection having an outwardly-disposed edge. When the coupling is assembled, the edges are frictionally engaged with the engagement surface as a result of the elastic deflection of the fingers. The frusto-conic shape of the engagement surface provides progressively greater frictional resistance in a direction of unthreading of the coupling, whereby loosening of the coupling during operation of the fluid circuit is resisted.

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patent: 2832207 (2001-11-01), None
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