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:
Nov. 24, 1992
Filed:
Mar. 12, 1992
Richard H Pilsbury, Lake Hiawatha, NJ (US);
Inventio AG, Hergiswil, CH;
Abstract
A runner guide for an elevator door includes a ramp member at an end of travel position along a guide rail for engaging a roller attached to the door and running on the guide rail. The roller has a rim disc which engages a surface on the ramp member to move an insert in the roller out of engagement with the rail thereby relieving the load on and preventing flattening of the running surface on the insert when the door is at rest. The insert is formed of a non-metallic and hard elastic material to reduce running noise. The door is supported by a pair of such rollers, each having a pair of rim discs, and one roller is asymmetric with one of the rim discs being of a smaller diameter to move past the ramp member associated with the other roller without contact during opening and closing of the door.