Seal for a joint or juncture – Seal between relatively movable parts – Circumferential contact seal for other than piston
Reexamination Certificate
1998-09-17
2001-09-25
Knight, Anthony (Department: 3626)
Seal for a joint or juncture
Seal between relatively movable parts
Circumferential contact seal for other than piston
C285S110000, C285S369000, C277S551000
Reexamination Certificate
active
06293556
ABSTRACT:
FIELD OF INVENTION
The present invention relates to coupling and connecting means to be used with pipes of same or different diameters made of all kinds of material and more particularly to the sealing means for such connecting means.
There are known a very large variety of means for connecting two abutting pipes whether of the same or different material. The sealing means of such connectors in most cases is a rubber ring or other resilient material.
In Israeli Patent Application No. 114078 there is described and claimed a connector similar to the connector subject matter of the present application.
Experience has shown that in order to be able to connect two pipes of different diameters when the difference between the diameter of the pipe s is more substantial it is necessary to use a special connector both ends of which being of different diameter.
OBJECTS OF INVENTION
It is thus the object of the present invention to provide a novel seal for coupling and connecting means, to be used when the diameter of two abutting pipes is the same or differ.
It is a further object of the present invention to provide a seal of novel cross section.
It is a further object of the present invention to provide a seal made of two parts which could be used as a whole or one part thereof.
By using two sizes of such seal a connector of a given diameter could be used for connecting two pipes of different diameter, the difference of which could be quite substantial.
ABSTRACT OF DISCLOSURE
The seal according to the invention is placed within a U-shaped ring which is placed over an outwardly flaring circumferential flange of a connector's barrel shaped body.
According to the invention there is provided a sealing ring made of resilient material comprising a first sleeve-like ring, the cross section of which defines a space therein, and a second ring overriding the first sleeve-like ring and being loosely connected to said first ring which enables the tearing off of said second ring.
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patent: 293734 (1884-02-01), Harrison
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patent: 3432189 (1969-03-01), Buller
patent: 3486772 (1969-12-01), Elsner
patent: 4480860 (1984-11-01), Foresta et al.
patent: 4824148 (1989-04-01), Grabowski
patent: 5203594 (1993-04-01), Straub
patent: 5257834 (1993-11-01), Zeidler et al.
patent: 5314213 (1994-05-01), Heister et al.
patent: 5476292 (1995-12-01), Harper
patent: 5941576 (1999-08-01), Krausz
patent: 2098297 (1982-05-01), None
patent: 114078 (1997-11-01), None
Kilpatrick & Stockton LLP
Knight Anthony
Krausz Metal Industries Ltd.
Peavey Enoch E.
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