Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Reexamination Certificate
2005-06-07
2005-06-07
Watson, Robert C. (Department: 3723)
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
C072S325000, C072S409010, C137S318000
Reexamination Certificate
active
06901643
ABSTRACT:
The drip system tool is similar to a pair of pliers with a piercing member and a retention member crossed in the center and rotatably fastened together. The piercing member has a handle with a gripping surface on one end and an inwardly projecting piercing pin on the opposite end. The retention member has a handle with a gripping surface on one end and an inwardly projecting arcuate retention hook on the opposite end. The retention hook is of a sufficient diameter to retain a piece of irrigation hose for the formation of a hole by the piercing pin. The retention member also features an axially oriented extension formed with a cylindrical socket for holding a conventional connector fitting for a drip irrigation system.
REFERENCES:
patent: 1882095 (1932-10-01), Reggittis
patent: 4018110 (1977-04-01), Spriggs
Krasner Robert E.
Krasner Ronald D.
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