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:
May. 08, 2007
Filed:
Nov. 19, 2004
Richard J. Hellinga, Waterloo, CA;
Michael Johnson, Toronto, CA;
Richard J. Hellinga, Waterloo, CA;
Michael Johnson, Toronto, CA;
Multimatic Inc., Markham, Ontario, unknown;
Abstract
A method and system for controlling the descent of a moveable element pivotally attached to a rigid structure. The moveable element is pivotally attached to the rigid structure, and is then pivotally connected to a compressible strut, which is attached to a linkage pivotally connected to the rigid structure. The descent of the moveable element is pivotally controlled using a microcontroller and a motor attached to the linkage, and the control path for the linkage is selected based on a comparison of the angle between the linkage and the rigid structure and the angle between the moveable element and the rigid structure.