Hollowed, deformable, raised face bolt-ring

Details Hollowed, deformable, raised face bolt-ring Hollowed, deformable, raised face bolt-ring

2008-07-22

2008-07-22

Bochna, David E (Department: 3679)

Pipe joints or couplings

Flange

Detachable

C285S412000, C285S368000

Reexamination Certificate

active

07401821

ABSTRACT:
A bolt-ring pipe connector system for connecting stub end pipe particularly thermoplastic pipe is shown. The bolt-ring has an outer vertical rim portion, an inner vertical rim portion and an interconnecting web portion provided with spaced bolt holes. The top side of the bolt-ring has a beveled and angular top surface. The bottom side of the bolt-ring has a contoured recess that provides a variable cross sectional diameter. The new, deformable, variable geometry, hollowed, bolt-ring can be flexed by slight deformations under constant bolt-load. As a result, all anticipated initial and operating changes in high-density polyethylene stub-end dimensions, such as those caused by bolt-up and thermal strain, are managed by the bolt-ring.

REFERENCES:
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patent: 5230540 (1993-07-01), Lewis et al.
patent: 5413389 (1995-05-01), Schlicht
patent: 5716083 (1998-02-01), Carr
patent: 5967566 (1999-10-01), Schlicht
patent: 6361085 (2002-03-01), Nguyen

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