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:
Oct. 05, 1999
Filed:
Oct. 02, 1997
Stephen N McEwen, Bowling Green, OH (US);
Henry Filters, Inc., Bowling Green, OH (US);
Abstract
The present invention includes a compact drive system comprising a housing, a motor, a worm screw, a first gear, an internal gear, a second gear and an output gear. The motor is supported relative to the housing and the worm screw is driven by the motor. The first gear rotates about a central axis and is driven by the worm screw to provide a first gear reduction. The first gear has a hub offset from the central axis. The internal gear mounts relative to the housing and has a predetermined number of internal teeth. The second gear has an aperture which is driven by the eccentric hub as the eccentric hub rotates. The internal teeth cooperate with the external teeth so that the second gear orbits within the internal gear when driven by the eccentric hub to provide a second gear reduction. An output gear rotates about the central axis and is supported relative to the housing. The output gear and the second gear have cooperating drive pins and elongated slots enabling the second gear to rotatable drive the output gear while facilitating limited eccentric movement therebetween. The drive system may be used to drive an endless chain and flight conveyor system on a machine tool coolant filtration tank.