Opposed wiping type wiper unit

Details Opposed wiping type wiper unit Opposed wiping type wiper unit

1996-07-15

1999-04-20

Graham, Gary K.

Metal working

Method of mechanical manufacture

Converting

1525014, 152503, 1525031, 1525027, 74 43, B60S 106, B60S 124

Patent

active

058946527

ABSTRACT:
An opposed wiping type wiper unit for use with one of right-hand and left-hand specifications has a crank arm that rotates when driven by a motor, an intermediate link connected to right-hand and left-hand wiper shafts through driving rods, and a connecting rod that connects the crank arm and the intermediate link. The length of the connecting rod and the connecting position thereof to the intermediate link are set so that the actual angular acceleration change of the intermediate link is substantially symmetrical. The angular velocity changes of right-hand and left-hand wiper arms are made asymmetrical on the basis of the length of the driving rods and the connecting positions thereof to the intermediate link. Only the lengths of the driving rods and their connecting positions to the intermediate link need to be varied. Thus, the opposed wiping type wiper unit can easily be designed in accordance with both right-hand and left-hand specifications, and permits the use of as many parts common to the specifications as possible, thereby decreasing the cost.

REFERENCES:
patent: 2298197 (1942-10-01), Coffey
patent: 3113334 (1963-12-01), Howard
patent: 3336619 (1967-08-01), Hoyler

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