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:
Oct. 18, 1988
Filed:
Dec. 22, 1987
Haruo Okuda, Warabi, JP;
Yukiho Murata, Sagamihara, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Ichikoh Industries Limited, Tokyo, JP;
Abstract
A control lever is driven by a driving unit to cause variation in tension of a coil spring and therefore variation in force with which a wiper blade is pressed against a windshield. The driving unit is disposed in an arm head and includes a geared motor, a male screw member in the form of a bolt and secured to an output shaft of the geared motor and a female screw member having an internally threaded socket portion screwed onto the male screw member and a sliding portion in the form of a rectangular bar and installed in a guide member for longitudinal movement but against rotation. The output shaft of the geared motor, male screw member and the female screw member are so arranged as to have axes in line with each other and exending longitudinally of the arm head.