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:
Mar. 12, 1985
Filed:
Feb. 25, 1982
Applicant:
Inventor:
Dennis P Chadwick, Napanee, CA;
Assignee:
Urban Transportation Development Corporation Ltd., Toronto, CA;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B61D / ; B61D / ; B61F / ;
U.S. Cl.
CPC ...
105 / ; 105 17 ; 105 18 ; 280403 ;
Abstract
A tunnel structure for interconnecting passenger compartments on an articulated vehicle includes pairs of cylindrical walls which overlap during steering movement of the vehicle. To seal between the cylindrical walls, a pair of inner walls is provided which include hinged flaps lying against the cylindrical wall. The flaps are hinged on an inclined axis to reduce clearance between the cylindrical walls and the side walls upon the vehicle negotiating vertical curves.