Brushing – scrubbing – and general cleaning – Attachments – Optical-member-attachable cleaner
Patent
1987-09-15
1989-04-18
Hornsby, Harvey C.
Brushing, scrubbing, and general cleaning
Attachments
Optical-member-attachable cleaner
1525004, 1525007, 1525009, 1525019, 1525041, B60S 146
Patent
active
048213632
ABSTRACT:
In order to achieve satisfactory defrosting without causing undue wear of the wiper blades equipped with double tongues of elastomer material, the invention provides for first freeing the tongues from the coating of ice by blowing hot air into the duct formed between said tongues, then raising the pivot shaft (24) of the blade holder, and therefore the tongues, by applying an axial thrust to said shaft by means of the piston (27) of a jack (86) while retaining parallelism between the tongues and the windshield. The connection, preventing rotation but allowing free axial sliding, between the shaft (24) and the driving connecting rod (29) makes it possible for the shaft to pivot both in the raised position, while passing a current of hot air over the ice from the windshield wiper which has been lifted off the windshield, and in the lowered position in which the tongues bear against the windshield.
REFERENCES:
patent: 1610361 (1926-12-01), Colvin
patent: 2582717 (1952-01-01), Pierce
patent: 3427675 (1969-02-01), Tibbet
patent: 3447186 (1969-06-01), Senkewich
patent: 4192038 (1980-03-01), Klein et al.
Hornsby Harvey C.
Peterson Christine A.
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