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:
Jan. 08, 2008
Filed:
Jun. 30, 2004
Blue Houser, Edgemoor, SC (US);
Sidney J. Lampley, Monroe, NC (US);
Robert Tadlock, Charlotte, NC (US);
Tom Harris, Charlotte, NC (US);
John Presely, Monroe, NC (US);
Jeff Schoener, Charlotte, NC (US);
Lana Kirkpatrick, Monroe, NC (US);
Blue Houser, Edgemoor, SC (US);
Sidney J. Lampley, Monroe, NC (US);
Robert Tadlock, Charlotte, NC (US);
Tom Harris, Charlotte, NC (US);
John Presely, Monroe, NC (US);
Jeff Schoener, Charlotte, NC (US);
Lana Kirkpatrick, Monroe, NC (US);
Yale Security Inc., Monroe, NC (US);
Abstract
A drive mechanism is provided for a door operator, comprising a drive member and a driven member. The drive member includes a protrusion, the edges of the protrusion forming first and second driving surfaces which define a free space of at least about 90° there between. The driven member includes a protrusion, the sides of the protrusion form a first and a second driven surface, respectively. The drive member is adapted to be operably connected to between a motor assembly for rotating the drive member and a door closer assembly rotating with the driven member. The drive member and the driven member are disposed for relative rotation in substantially the same plane such that the driven member protrusion moves in the free space defined by the driving surfaces of the drive member protrusion. Rotation of the drive member from a first angular orientation to a second angular orientation in a direction toward an adjacent driven surface causes rotation of the driven member for powered opening of the door from the closed position to the open position. The driven member protrusion moves in the free space without engaging the protrusion surfaces when the door is opened manually from the closed position and allowed to close.