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US 4,495,689 AGranted
Tool for placement of O-rings and method
OwnerLawrence N. McNeal, Robin A. McNealinventors
Life of this patent
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Abstract
A tool is provided for positioning an "O" ring in a seating groove cut into the face of a section of flanged pipe. The tool includes a set of two adjustable tongs to grasp the "O" ring. The tongs are held in a fixed position by a pair of parallel facing plates. Bolts running through the parallel facing plates also run through a verticle plate of a support member which secures the tool to the flange.
Claims5
A tool for positioning an "O" ring in the "O" ring seating groove cut into the face of a section of flanged pipe or the like comprising in combination:
- (a) a set of thin, substantially flat tongs whose grasping jaws define the circumference of a circle, the thickness of said grasping jaws being less than the cross-sectional diameter of the annulus of the "O" ring to be grasped by said jaws, each of said tongs having a hole therein,
- (b) a pair of parallel facing plates to grasp and hold therebetween the upper ends of said tongs, each of said plates having three or more aligned holes therein,
- (c) a plurality of three or more bolts or like fastening means passing through said facing plates, two of said bolts also passing though the tongs and forming pivot points about which said tongs rotate,
- (d) means mounted on said bolts to hold the facing plates in fixed parallel relationship,
- (e) means for rotating said tongs about their pivot points so that their grasping jaws move toward or away from each other to define circles having varying radii, and
- (f) a support member to hold said parallel facing plates and tongs in a fixed vertical plane and to support the tool on a flange.
3 more elements
Dependencies are inferred from the claim text.