Supports – Pipe or cable – Brackets
Reexamination Certificate
2001-09-14
2003-10-21
Baxter, Gwendolyn (Department: 3632)
Supports
Pipe or cable
Brackets
C285S419000, C285S373000, C024S279000
Reexamination Certificate
active
06634607
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to pipe clamps. More particularly, the present invention relates to pipe clamps used to seal lap joints of a vehicle exhaust system.
BACKGROUND OF THE INVENTION
There are many applications where it is desirable to connect two pipes together. One common application is vehicle exhaust systems. In vehicle exhaust systems, two pipes are often connected at a “lap joint.” A “lap joint” is formed by inserting the end of one pipe into the end of another pipe such that the ends overlap one another. A clamp is then placed around the overlapped ends of the pipes. The clamp preferably functions to seal the lap joint and to mechanically connect the two pipes together such that the two pipes are prevented from being pulled apart.
Numerous patents exist relating to clamps used for vehicle exhaust systems. Some example patents relating to this field include U.S. Pat. No. 4,312,526 to Cassel, U.S. Pat. No. 4,813,720 to Cassel, U.S. Pat. No. 6,116,659 to Wagner, U.S. Pat. No. 4,790,574 to Wagner et al. and U.S. Pat. No. 5,116,083 to Gillingham et al.
SUMMARY OF THE INVENTION
The present invention relates to a pipe clamp having enhanced sealing capabilities.
A variety of advantages of the invention will be set forth in part in the description that follows, and in part will be apparent from the description, or may be learned by practicing the invention. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restricted.
REFERENCES:
patent: 848139 (1907-03-01), Stuppar
patent: 852997 (1907-05-01), Brandram
patent: 973466 (1910-10-01), Beegen
patent: 1146813 (1915-07-01), Peterman et al.
patent: 2004182 (1935-06-01), Arey
patent: 2227551 (1941-01-01), Morris
patent: 2690193 (1954-09-01), Smith
patent: 2908061 (1959-10-01), Adams
patent: 2998629 (1961-09-01), Smith
patent: 3004781 (1961-10-01), Morris
patent: 3565468 (1971-02-01), Garrett
patent: 3905623 (1975-09-01), Cassel
patent: 3944265 (1976-03-01), Hiemstra et al.
patent: 4049298 (1977-09-01), Foti
patent: 4056273 (1977-11-01), Cassel
patent: 4142743 (1979-03-01), McGowen et al.
patent: RE30042 (1979-07-01), Hiemstra et al.
patent: 4165109 (1979-08-01), Foti
patent: 4261600 (1981-04-01), Cassel
patent: 4312526 (1982-01-01), Cassel
patent: 4364588 (1982-12-01), Thompson
patent: 4365392 (1982-12-01), Heckethorn
patent: 4408788 (1983-10-01), Beukema
patent: 4463975 (1984-08-01), McCord
patent: 4558891 (1985-12-01), Wagner et al.
patent: 4790574 (1988-12-01), Wagner et al.
patent: 4813720 (1989-03-01), Cassel
patent: 5116083 (1992-05-01), Gillingham et al.
patent: 6116659 (2000-09-01), Wagner
patent: 6269524 (2001-08-01), Cassel
patent: 373678 (1932-06-01), None
Belisle John L
Vogel James E.
Wagner Wayne M.
Baxter Gwendolyn
Donaldson & Company, Inc.
Merchant & Gould P.C.
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