Tools – Tool jaw – Jaw-actuating means
Patent
1994-08-19
1996-04-30
Meislin, D. S.
Tools
Tool jaw
Jaw-actuating means
81352, 81357, B25B 712
Patent
active
055114539
ABSTRACT:
A pliers for mounting purposes has two plier portions pivotably connected by a first pivot connection. Each plier portion has a jaw base body and a grip of a length that is a multiple of the length of the jaw base body. A first grip is divided into a first and second section. The first section, shorter than the second section, is located between the jaw base body and the second section. A second pivot connection pivotably connects the first and second sections and has a pivot bolt extending parallel to the pivot axis of the first pivot connection. A sprocket wheel and a ratchet wheel are rotatably connected to the pivot bolt and fixedly connected to one another. A chain connected to the second grip is guided across the sprocket wheel to the second section and extends in the longitudinal direction toward a tension spring at which it is fastened. A spring-biased follower pawl is connected to the second section such that upon closing the second section sprocket wheel and ratchet wheel rotate to close the pliers. The ratchet wheel has an outer toothing engaged by a spring-biased locking pawl that allows rotation of the ratchet wheel in a first direction during closing of the pliers but prevents rotation in the counter direction. A pin, connected to the locking pawl and accessible from the exterior of the pliers, is provided for disengaging the locking pawl temporarily from the outer toothing.
REFERENCES:
patent: 2643564 (1953-06-01), Klein et al.
patent: 2993275 (1961-07-01), Naito
patent: 3084432 (1963-04-01), Hill
patent: 4742737 (1988-05-01), Hatfield
Neumann Rainer
Schwalm Dieter
Meislin D. S.
Vulkan Lokring GmbH & Co. KG
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