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. 05, 1992
Filed:
May. 22, 1990
Applicant:
Inventors:
Roland Thomann, Langnau, CH;
Heinz Witschi, Adlingenswil, CH;
Assignee:
ABT, Inc., Troutman, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E01C / ; E05C / ;
U.S. Cl.
CPC ...
404-4 ; 49465 ;
Abstract
The invention comprises a grate having a device to prevent it from dislodging when a vehicle drives over the grate. For this purpose, a part (2') of the supporting component at a side face of the grate (1) is designed as a thin, tongue-shaped wall (33) with an outer thickening (34). The supporting component has a notch (35) that is vertical with respect to its longitudinal axis on an end of the tongue-shaped wall, a thickening (22) or a depression being located on an inner side face of the associated supporting frame.