Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Reexamination Certificate
2011-07-19
2011-07-19
Bryant, David P (Department: 3726)
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
C254S208000, C254S209000, C254S251000, C254S263000
Reexamination Certificate
active
07979968
ABSTRACT:
A membrane puller for pulling a sheet of membrane material over an underlying surface has a frame with a lever arm pivotally attached to the frame for pivotal movement between a first position and a second position. A foot actuatable clamp assembly is carried by the frame for relative movement with the frame in response to pivotal movement of the lever arm. A cable has one end adapted for operable attachment to the lever assembly and another end adapted for operable attachment to the clamp assembly. The clamp assembly moves conjointly with the body via the cable and in response to pivotal movement of the lever arm toward its second position to pull the membrane material toward the front of the membrane puller.
REFERENCES:
patent: 3168119 (1965-02-01), Schwester et al.
patent: 3789496 (1974-02-01), Barabas
patent: 3958318 (1976-05-01), Crosa
patent: 4742992 (1988-05-01), Allen
patent: 5361475 (1994-11-01), Scruggs
Bryant David P
Duro-Last, Inc.
Koehler Christopher M
Reising Ethington PC
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