Hydraulic and earth engineering – Marine structure or fabrication thereof – Floatable to site and supported by marine floor
Patent
1978-05-01
1979-03-20
Shapiro, Jacob
Hydraulic and earth engineering
Marine structure or fabrication thereof
Floatable to site and supported by marine floor
138 89, E02D 552
Patent
active
041451589
ABSTRACT:
A diaphragm closure support system connectable to the inside of a pipe adjacent a diaphragm closure on the end of the pipe to prevent rupture of the diaphragm closure by hydrostatic pressure when the pipe is submerged in water. A diaphragm closure support ring having slots formed therein is welded to the inside of the lower end of the pipe. A diaphragm support plate, slightly smaller than the inside diameter of the support ring, is positioned to engage the resilient diaphragm closing the end of the pipe. A plurality of T-bolts are pivotally secured to the support plate and positioned to extend into the slots in a support ring. A T-bolt retraction ring is moveably secured to the support plate and positioned to urge the T-bolts into a locked position in the slots in the support ring. An upward force on the retraction ring initially unlocks the T-bolts from the slots in the support ring and subsequent movement disengages the T-bolts from the slots to permit movement of the diaphragm closure support through the pipe while leaving the diaphragm closure positioned on the end of the pipe.
REFERENCES:
patent: 3537483 (1970-11-01), Teague, Jr.
patent: 4047391 (1977-09-01), Mayfield et al.
patent: 4077435 (1978-03-01), Van Scoy
Britton Fred G.
Richardson Murl R.
Von Bose Robert J.
Crutsinger Gerald G.
Dwight Larry B.
Oil States Rubber Co.
Shapiro Jacob
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