Composite windshield wiper assembly
OwnerRobert L. Alley, Jr.inventor
Life of this patent
Estimating the term…
Abstract
A wiper blade assembly (A) for wiping and cleaning an automobile windshield includes a pair of spaced wiper blade elements (42, 44) having thin resilient wiping edges (42a, 44a). A scrubbing block (50) occupies the entire space between the wiping blade elements and includes a protrusion (52) of the scrubbing block which extends past the wiping edges (42a, 44a) a length, .DELTA.X, to absorb a fraction of the normal force against the windshield and provide a light scrubbing action against the windshield. The mass of the scrubbing block is concentrated between the wiping edges (42a, 44a) to provide rigidity. The scrubbing material accumulates liquid for providing a reservoir which flushes out dirt during to and fro motion of the wiping action.
Claims15
A windshield wiper blade assembly having an elongated composite scrubber wiper blade for wiping and cleaning the windshield of an automobile of the type which includes a spring loaded wiper arm for holding the wiper blade under force against the windshield and oscillating the blade back and forth across the windshield, said wiper blade assembly comprising:
- an elongated spine member including a back flange, a front flange having a C-shaped channel flange formed therein facing the windshield during operation, and a web connecting the front and back flanges;
- said C-shaped channel including a back wall, a pair of side walls depending downwardly from said back wall, and opposing side flanges extending inwardly towards each other from said side walls and terminating short of each other to form connector end channels and defining a gap in said front face of said C-shaped flange;
- a first rubber-like blade element depending downwardly from said C-shaped channel of said front flange of said wiper blade assembly terminating in a first resilient wiping edge;
- a second elongated rubber-like blade element depending downwardly from an opposing side of said C-shaped channel of said front flange terminating in a second resilient wiping edge, said first and second wiping edges being capable of carrying a substantial portion of the load resulting from the force exerted by the wiper arm;
- a space defined between said first and second rubber-like blade elements and said back wall of said channel flange;
- a connecting portion formed in each said rubber-like elongated blade element received in said end channel of said C-shaped channel of said front flange;
- a block of scrubbing material carried in said space between said first and second elongated wiper blades filling said space entirely between said blades to eliminate any void spaces and avoid accumulation of dirt and the like;
- and
- a protrusion of said scrubbing material extending past ends of said resilient wiper edges having an abrasive surface contacting said windshield, said protrusion having a sufficient extent so that said abrasive scrubbing surface contacts said windshield generally concurrently with said wiping edges of said elongated wiper elements and likewise is capable of carrying a substantial portion of the force exerted by the wiper arm whereby cleaning and wiping are facilitated generally concurrently.
A windshield wiper blade assembly for wiping and cleaning the windshield of an automobile and the like having oscillating spring loaded windshield wiper arms, said assembly comprising:
- an elongated spine member adapted for connection to said windshield wiper arm;
- a pair of spaced windshield wiper elements carried by said back spine member terminating in windshield wiper edges which are generally resilient edges which terminate in substantially flat end surfaces that contact the windshield;
- a scrubbing material space defined by said windshield wiper blade elements being spaced from one another;
- a block of elongated scrubbing material carried in said space between said first and second elongated blade elements substantially filling said entire space to eliminate any void spaces where dirt and grime may accumulate and smear said windshield;
- said block of scrubbing material including an uncompressed protrusion extending past ends of said resilient wiper blade edges terminating in an abrasive windshield contacting surface which is substantially flat;
- and
- said protrusion having an extend which is a function of the load supported by said block of scrubbing material and when under compression the windshield contacting surfaces of the wiper elements and the scrubbing material concurrently contact the windshield.
A windshield wiper assembly for wiping and cleaning the windshield of an automobile and the like of the type which includes spring loaded windshield wiper arms oscillating back and forth across the windshield in a wiping action, said assembly comprising:
- an elongated spine member;
- a pair of elongated blade elements carried by said spine member in a spaced-apart relationship defining an open space therebetween;
- an elongated block of porous scrubbing material carried between said wiper blade elements generally filling said space between said wiper blade elements to eliminate the accumulation of dirt, oil, and the like which can cause smearing of the windshield, said scrubbing material protruding beyond the wiper elements when uncompressed;
- and
- said block of porous material being carried between said first and second blade elements to concurrently support a part of the force which is normal to the windshield when the porous material is compressed under said force.
Dependencies are inferred from the claim text.