Pipe coupling gasket insert
First Claim
1. In a pipe coupling for coupling together the adjacent ends of a pair of axially aligned pipes whose adjacent ends are slightly spaced apart to form a gap therebetween, with the pipe coupling formed of a substantially circular casing which is C-shaped in cross-section to provide a continuous, annular radially inwardly opening channel within the casing, with the channel defined by an annular base and a pair of spaced apart, annular, radially inwardly directed legs whose free annular inner end portions encircle and enclose the adjacent end portions of the aligned pipes;
- and with an annular, resilient gasket positioned within the casing channel and said gasket being generally channel shaped in cross-section to form an annular base portion arranged adjacent the casing base and inwardly directed leg portions adjacent their respective casing legs and terminating in free edges which are spaced apart, for encircling and sealing against adjacent end portions of the aligned pipes for sealing and coupling the pipes together, said gasket base and legs defining a channel, the improvement comprising;
a rubber-like, resilient, ring-shaped insert loosely fitted within the gasket channel such that at least one gap is formed between said insert and gasket when the joint is in its clamped, functional position, and said insert enabling manual insertion and removal of the insert from the gasket channel for selective use with the gasket;
with the insert having an outer, peripheral base surface arranged against the gasket base, and having an inner, narrowed, continuous annular rim portion extending radially inwardly between the free ends of the gasket legs, depression means on said insert ring between said insert base and rim, said depression means enabling said insert to be compressed by pressurized fluid in said at least one gap within said gasket channel, in a use position; and
said rim portion fitting across the gap between the pipe ends and encircling and engaging both of the adjacent pipe ends for resiliently sealing them together.
1 Assignment
0 Petitions
Accused Products
Abstract
A pipe coupling gasket insert is provided for optional use within a conventional C-shaped in cross-section, resilient gasket which is fitted within a conventional rigid C-shaped in cross-section coupling formed for encircling and coupling together the end portions of a pair of co-axially arranged, adjacent pipe end portions. The gasket has band-like lips formed on its inner portions for encircling and engaging the surfaces of the respective pipe end portions with the lips having free edges that are spaced apart. The pipe ends are slightly gaped apart. The insert, form of a resilient ring, is manually positioned within the gasket, for engaging the base of the C-shaped gasket, and has a radially inwardly extending rim that extends between the free edges of the gasket lips for engaging the end portions of the adjacent pipes and spanning the gap therebetween. The insert rim portion may be shaped to extend into gap or over the gap for sealing the gap between the adjacent pipe ends.
61 Citations
14 Claims
-
1. In a pipe coupling for coupling together the adjacent ends of a pair of axially aligned pipes whose adjacent ends are slightly spaced apart to form a gap therebetween, with the pipe coupling formed of a substantially circular casing which is C-shaped in cross-section to provide a continuous, annular radially inwardly opening channel within the casing, with the channel defined by an annular base and a pair of spaced apart, annular, radially inwardly directed legs whose free annular inner end portions encircle and enclose the adjacent end portions of the aligned pipes;
- and with an annular, resilient gasket positioned within the casing channel and said gasket being generally channel shaped in cross-section to form an annular base portion arranged adjacent the casing base and inwardly directed leg portions adjacent their respective casing legs and terminating in free edges which are spaced apart, for encircling and sealing against adjacent end portions of the aligned pipes for sealing and coupling the pipes together, said gasket base and legs defining a channel, the improvement comprising;
a rubber-like, resilient, ring-shaped insert loosely fitted within the gasket channel such that at least one gap is formed between said insert and gasket when the joint is in its clamped, functional position, and said insert enabling manual insertion and removal of the insert from the gasket channel for selective use with the gasket; with the insert having an outer, peripheral base surface arranged against the gasket base, and having an inner, narrowed, continuous annular rim portion extending radially inwardly between the free ends of the gasket legs, depression means on said insert ring between said insert base and rim, said depression means enabling said insert to be compressed by pressurized fluid in said at least one gap within said gasket channel, in a use position; and said rim portion fitting across the gap between the pipe ends and encircling and engaging both of the adjacent pipe ends for resiliently sealing them together. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- and with an annular, resilient gasket positioned within the casing channel and said gasket being generally channel shaped in cross-section to form an annular base portion arranged adjacent the casing base and inwardly directed leg portions adjacent their respective casing legs and terminating in free edges which are spaced apart, for encircling and sealing against adjacent end portions of the aligned pipes for sealing and coupling the pipes together, said gasket base and legs defining a channel, the improvement comprising;
-
9. An insert for a pipe coupling gasket with is formed of a C-shaped in cross-section circular ring made of a resilient, rubber-like material and having a circumferential base with integral, radially inwardly extending legs terminating in edge portions which are spaced apart a short distance and which are sized and shaped to encircle adjacent pipe ends of a pair of pipes that are co-axially arranged for coupling together, and with the gasket contained within a C-shaped, in cross-section coupling housing which encircles the adjacent pipe ends for coupling the pipe ends together said gasket base and legs defining a channel, In said insert comprising:
-
a resilient, rubber-like, ring which is roughly triangular shaped in cross-section so as to have a base portion adapted to be arranged against the interior of the base portion of the gasket and a radially inwardly extending rim portion, with the insert being adapted for being loosely inserted within the gasket channel such that at least one gap is formed between said insert and gasket when the joint is in its clamped, functional position, and for manually selectively positioning and removing the insert from the gasket; depression means on said insert ring between said insert base and rim, said depression means enabling said insert to be compressed by pressurized fluid in said at least one gap within said gasket channel, in a use position; and said insert rim being sufficiently narrow, in the axial direction of the gasket, for fitting between the free ends of the gasket legs for engaging against both of the adjacent end portions of the adjacent pipes for sealing against said pipe end portions. - View Dependent Claims (10, 11, 12, 13, 14)
-
Specification