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. 23, 1999
Filed:
Aug. 17, 1998
Christian Hein, Langenhagen, DE;
Dorma GmbH + Co. KG, Ennepetal, DE;
Abstract
A revolving door has at least one night closing panel that runs concentric to at least one barrel-type wall. The night closing panel or panels slide or roll on a guide rail which is located on the ceiling structure or on attachments to the ceiling structure. The night closing panels can be moved with respect to the barrel-type wall by at least one flexible, endless tension or motive device. The flexible tension device is located in a runner, whereby the two strands of the flexible tension device are restrictively guided one above the other in the runner.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile