초록 ▼

A coupling for forming a sealed engagement with a tubular member, the coupling comprising an annular housing having an engagement zone for receiving a tubular member to be engaged by the coupling, and comprising an engagement assembly positioned within the engagement zone. The engagement assembly co

A coupling for forming a sealed engagement with a tubular member, the coupling comprising an annular housing having an engagement zone for receiving a tubular member to be engaged by the coupling, and comprising an engagement assembly positioned within the engagement zone. The engagement assembly comprises an annular gasket for sealing engagement with a tubular member upon axial compression of the engagement assembly. The annular gasket has a plurality of circumferentially spaced bores. A plurality of bolts for axial compression of the engagement assembly, are positioned to extend through the bores. The engagement assembly includes at least one washer for applying axial pressure to the annular gasket during axial compression of the engagement assembly. The engagement assembly further includes a gripping ring to be radially compressed upon axial compression of the engagement assembly to grip a tubular member when positioned in the engagement zone. The engagement assembly further includes wedge surfaces to cooperate with the gripping ring to resiliently compress the gripping ring into engagement with a tubular member.

대표청구항 ▼

A coupling for forming a sealed engagement with a tubular member, the coupling comprising an annular housing having an engagement zone for receiving such a tubular member to be engaged by the coupling, and comprising an axially compressible engagement assembly positioned within the engagement zone,

A coupling for forming a sealed engagement with a tubular member, the coupling comprising an annular housing having an engagement zone for receiving such a tubular member to be engaged by the coupling, and comprising an axially compressible engagement assembly positioned within the engagement zone, the engagement assembly comprising: (a) annular gasket means for sealing engagement with an inner wall on the housing which defines the engagement zone and with such a tubular member received within the engagement zone upon axial compression of the engagement assembly, the annular gasket means having a plurality of circumferentially spaced axially extending bores; (b) axial compression means for axial compression of the engagement assembly, the compression means comprising: a plurality of bolts having threaded ends positioned to extend through the bores; and nut means for threading onto the threaded ends of the positioned bolts, the nut means being positioned to thread the threaded ends in a manner to apply axial compression on the engagement assembly upon actuation of the bolts relatively to the nut means; (c) at least one washer means for applying axial pressure to the annular gasket means during axial compression of the engagement assembly; (d) gripping means to be displaced radially inwardly upon axial compression of the engagement assembly to grip such a tubular member positioned in the engagement zone; and (e) wedge means including complementary surfaces inclined so as to displace the gripping means radially inwardly upon axial compression of the engagement assembly.