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:
Mar. 18, 1997
Filed:
Sep. 05, 1995
Hiroyuki Mitsui, Kasugai, JP;
Shiro Oya, Nagoya, JP;
Etuzo Nomura, Kasugai, JP;
Yuji Tagawa, Nagoya, JP;
Yoichi Kurahashi, Owariasahi, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
A sewing machine including a needle holding device which holds a sewing needle, a sheet holding device which holds one or more work sheets, and a moving device which moves the sheet holding device relative to the needle holding device, the moving device including a drive source which produces a drive force, one or more cylindrical cams which are connected to the drive source and each of which is rotatable about an axis line by being driven by the drive source, each cylindrical cam having a pair of opposite spiral cam surfaces formed on an outer circumferential surface thereof, and one or more cam followers which are connected to the sheet holding device and each of which is engaged with the spiral cam surfaces of a corresponding cylindrical cam such that the cam follower is movable along the cam surfaces and is substantially immovable in directions perpendicular to the cam surfaces, the cam follower being moved in a drive-force transmitting direction substantially parallel to the axis line of the cylindrical cam when the cam is rotated by the drive source, so that the cam follower transmits the drive force of the drive source to the sheet holding device.