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. 02, 1982
Filed:
Nov. 03, 1980
Applicant:
Inventor:
Helmut H Wirschal, York, PA (US);
Assignee:
Allis-Chalmers Corporation, Milwaukee, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E02B / ;
U.S. Cl.
CPC ...
405100 ; 405 61 ;
Abstract
Rotating flow control flap-gate in a water canal provides a rotating motion to overcome ice friction without additional ice prevention provisions, to permit water flow in the canal below the ice cover.
Wirschal, Helmut. (1982). Flap-gate for bottom discharge control in canals having ice problems (U.S. Patent No. 4357121). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4357121
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile