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:
Aug. 06, 2013
Filed:
Dec. 30, 2011
Blue Houser, Edgemoor, SC (US);
Sidney J. Lampley, Monroe, NC (US);
Robert Tadlock, Charlotte, NC (US);
Tom Harris, Charlotte, NC (US);
John Presley, 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 Presley, Monroe, NC (US);
Jeff Schoener, Charlotte, NC (US);
Lana Kirkpatrick, Monroe, NC (US);
Yale Security Inc., Monroe, NC (US);
Abstract
A drive mechanism for a door operator comprises a drive member and a driven member. The drive member is adapted to be operably connected 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 both include a protrusion. The driven member protrusion moves in the free space defined by driving surfaces of the drive member protrusion. Rotation of the drive member from a first angular orientation to a second angular orientation causes rotation of the driven member for powered opening of the door. The driven member protrusion moves in the free space without engaging the protrusion surfaces when the door is opened manually and allowed to close.