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:
Feb. 01, 1977
Filed:
Sep. 26, 1975
John T Petrik, Newtown, CT (US);
Parker-Hannifin Corporation, Shelton, CT (US);
Abstract
A windshield wiper blade unit for use with a blade holder, or pressure distributing wiper structure, having a detachable blade-carrying yoke portion comprises a backing member consisting of an extruded elastically resilient strip having a longitudinally hollow central portion slotted along its bottom to receive slidably the head and neck portions of an elastic wiping element and having along its opposite sides laterally open claw-receiving channels defined by flanges which have ridge forming deformations that protrude into the channels to limit movement of the blade unit relative to the claws of the blade holder. Depressed portions of the upper flanges coact with the ridges formed by the deformations. The extruded strip serves also to keep the wiping element in place by virtue of the top wall of its central portion having segments thereof stuck down into the hollow to abut the ends of the wiping element.