Metal working – Means to assemble or disassemble – Means comprising hand manipulatable tool
Reexamination Certificate
2008-01-22
2008-01-22
Wilson, Lee D. (Department: 3723)
Metal working
Means to assemble or disassemble
Means comprising hand manipulatable tool
C029S237000
Reexamination Certificate
active
11456757
ABSTRACT:
A pipe coupler gripping each pipe with hand grip actuated clamps, and seating the end of one pipe in the aligned end of another pipe using leverage plates having a slot or channel with a drop notch, facilitating additional leveraging.
REFERENCES:
patent: 4054984 (1977-10-01), Ball et al.
patent: 4722468 (1988-02-01), McClure
patent: 4893393 (1990-01-01), Marshall
patent: 2005/0120531 (2005-06-01), Shelton
Calhoun Joe D.
Wilson Lee D.
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