The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 1992
Filed:
May. 20, 1991
Sadao Unuma, Aichi, JP;
Tokai Kogyo Kabushiki Kaisha, Aichi, JP;
Abstract
A clamp for a paper feed tractor for clamping a paper feed tractor to a support shaft. Such a clamp is used for clamping the paper feed tractor to the support shaft at a predetermined distance from another paper feed tractor which corresponds to a width of a perforated paper to be fed by the tractors. The clamp comprises a cylindrical holder member which is cantilevered from a frame of the paper feed tractor, and a cylindrical clamp member rotatably mounted about the holder member. The holder member comprises a pair of semi-cylindrical holder plates, each of which has two outer peripheral surface portions of differing radii and a sloped outer peripheral portion joining the two outer peripheral surface portions. The larger radius outer peripheral surface portion of each holder plate is arranged diametrically opposite from the other. The clamp member has an inner peripheral surface which is shaped to be complementary to the outer periphery of the holder member, such that upon rotating the clamp member away from a position in which its inner periphery is not complementary to the outer periphery of the holder member, the holder member is deflected radially inwardly so as to clamp against the support shaft.