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US 4,288,001 AGranted
Closure arrangement for pressure device
AssigneeGulf & Western Manufacturing Company
InventorRobert J. Lankston
Life of this patent
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AssigneeGulf & Western Manufacturing Company
InventorRobert J. Lankston
Estimating the term…
A pressure device is provided with a cover member which is removably attached thereto by a pair of clamping rings which are hydraulically actuated laterally outwardly and inwardly relative to flanges on the pressure device and cover member to respectively release the cover and interengage the cover with the device. The clamping rings are pivotally interconnected with the device such that lateral outward displacement of the clamping rings is accompanied by radial outward displacement of the pivot axis to provide clearance for removal of the cover member. The clamping ring members are guided during a portion of the lateral inward and outward displacement thereof, and the guide arrangement supports the clamping rings in the laterally outermost positions thereof. A safety interlock is provided between the displaceable ends of the clamping rings and the cover member to prevent lateral outward displacement of the clamping rings to release the cover member until the interior of the pressure device has been vented to atmosphere. For this purpose, the ends of the rings are provided with pins circumferentially interengaged by a latch plate, and the cover member is provided with a removable bleed valve which blocks displacement of the latch plate from the pins until the vessel has been vented and the valve removed from the cover member.
A closure for a pressure device having an opening bounded by a radially projecting circumferential flange comprising, a cover member having a radially projecting circumferential flange axially engaging said flange on said pressure device, clamping ring means releaseably interengaging said flanges on said pressure device and said cover member, said clamping ring means extending circumferentially about said flanges and having circumferentially adjacent end means, said ring means being displaceable laterally relative to said flanges between first and second positions in which said ring means respectively interengage said cover member and said pressure device and release said cover member for removal from said pressure device, means for displacing said clamping ring means between said first and second positions, releaseable latching means interengaging said end means of said ring means in said first position against displacement toward said second position, and means including bleed valve means on one of said cover member and pressure device preventing release of said latch means until the interior of said pressure device is vented to atmosphere.
A closure for a pressure device having an opening bounded by a radially projecting circumferential flange comprising, a cover member having a radially projecting circumferential flange axially engaging said flange on said pressure device, a pair of clamping ring members releaseably interengaging said flanges on said pressure device and said cover member, said clamping ring members extending circumferentially about said flanges and having corresponding and circumferentially adjacent first and second ends, said first ends being pivotally interconnected with said pressure device for said ring members to be pivotally displaceable laterally inwardly and outwardly relative to said flanges between first and second positions in which said ring members respectively interengage said cover member and said pressure device and release said cover member for removal from said pressure device, means for displacing said clamping ring members between said first and second positions, and interengaging guide means on each said ring member and said pressure device interengaging during lateral movement of said clamping ring members between said first and second positions.
Dependencies are inferred from the claim text.