Metal working – Means to assemble or disassemble – Spring applier or remover
Reexamination Certificate
2006-11-14
2006-11-14
Wilson, Lee D. (Department: 3723)
Metal working
Means to assemble or disassemble
Spring applier or remover
C029S278000
Reexamination Certificate
active
07134174
ABSTRACT:
A handheld tool, or a pair of such tools, such as for use in removing/installing a bolt-type clamping ring on a container barrel/drum, where the clamping ring has a pair of clamping ends each with a throughbore. Each tool has an elongated handle and an elongated lever arm transversely connected to one end of the handle. The lever arm is capable of being inserted into the throughbore of a selected clamping end and leveraged with the handle to exert a first moment on the selected clamping end. Each tool also has a second lever arm, such as a socket with an open-ended slot, which is suspended alongside the first lever arm. The second lever arm is capable of engaging the selected clamping end and being leveraged with the handle to exert a second moment which is orthogonal to the first moment. In this manner, the first and second moments operate to hold the selected clamping end fixed relative to the tool so that the selected clamping end may be controlled with the handle. The pair of clamping ends may also be simultaneously and independently controlled with the use of two handles/tools so as to contort the geometry of the drum clamping ring and enable its removal/installation.
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Tak James S.
The Regents of the University of California
Thompson Alan H.
Wilson Lee D.
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