Patent US3874019A successfully refreshed from Google Patents.
US3874019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Windshield wiper adapter
Assignee: Individual
•
Filing: 1973-09-07
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Granted: 1975-04-01
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Expires: 1993-09-07
Abstract
Abstract An adapter is provided for securing two parallel spaced windshield wiper blades upon a single driving arm to assure effective wiping. Means are provided to allow the arm pressure to be substantially equally divided between the two wiper blades. The equal pressure is effective in maintaining sufficient blade to windshield contact to assure effective wiping action regardless of the windshield being wiped.
Inventors
- 👤 Peter J Speth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:09
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/04; B60S1/32; B60S1/40; B60S1/28; B60S1/38; B60S1/3801; B60S1/4067; B60S1/4074; B60S1/4083; B60S1/4087; B60S2001/3812; B60S2001/3827; B60S2001/3836; B60S2001/3837
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
133 words
An adapter for supporting two wiper blades on a windshield wiper drive arm comprising wiper blade engaging means for removably disposing two wiper Blades on said drive arm in parallel relationship, said wiper blade means including a central arm through which said wiper blade engaging means is mounted on said drive arm, said wiper blade engaging means including swivel means for pivotally mounting each of said wiper blades with respect to said drive arm and for applying contact pressure to said wiper blades, said swivel means further including a pair of arms spaced on opposite sides of said central arm and a pivot pin pivotally mounting said pair of arms with respect to said central arm, and a swivel bridge pivotally mounted to said central arm and adapted to overlie said wiper blades.
Claim 2
Dependent Claim
133 words
An adapter for supporting two wiper blades on a windshield wiper drive arm comprising wiper blade engaging means for removably disposing two wiper Blades on said drive arm in parallel relationship, said wiper blade means including a central arm through which said wiper blade engaging means is mounted on said drive arm, said wiper blade engaging means including swivel means for pivotally mounting each of said wiper blades with respect to said drive arm and for applying contact pressure to said wiper blades, said swivel means further including a pair of arms spaced on opposite sides of said central arm and a pivot pin pivotally mounting said pair of arms with respect to said central arm, and a swivel bridge pivotally mounted to said central arm and adapted to overlie said wiper blades.
Claim 3
Dependent Claim
27 words
An adapter as claimed in claim 1 wherein said wiper blade engaging means includes means for removably mounting said wiper blade engaging means on said drive arm.
Claim 4
Dependent Claim
63 words
An adapter as claimed in claim 1 wherein said wiper blade engaging means includes a central arm through which said wiper blade''s engaging means is mounted on said drive arm and said swivel means includes a pair of arms spaced on opposite sides of said central arm and a pivot pin pivotally mounting said pair of arms with respect to said central arm.
Claim 5
Dependent Claim
102 words
An adapter for supporting two wiper blades on a windshield wiper drive arm comprising wiper blade engaging means for removably disposing two wiper blades on said drive arm in parallel relationship, said wiper blade engaging means including a central portion engageable with said drive arm, depending arm means depending from said central portion and a pair of posts carried by said depending arm means through which said blades are pivotally mounted, said wiper blade engaging means further including swivel means for pivoting each of said wiper blades with respect to said drive arm and for applying contact pressure to said wiper blades.
Claim 6
Dependent Claim
102 words
An adapter for supporting two wiper blades on a windshield wiper drive arm comprising wiper blade engaging means for removably disposing two wiper blades on said drive arm in parallel relationship, said wiper blade engaging means including a central portion engageable with said drive arm, depending arm means depending from said central portion and a pair of posts carried by said depending arm means through which said blades are pivotally mounted, said wiper blade engaging means further including swivel means for pivoting each of said wiper blades with respect to said drive arm and for applying contact pressure to said wiper blades.
Claim 7
Dependent Claim
23 words
An adapter as claimed in claim 4 wherein said pair of posts is mounted to said depending arm means through a parallelogram linkage.
Claim 8
Dependent Claim
23 words
An adapter as claimed in claim 4 wherein said pair of posts is mounted to said depending arm means through a cross link.
Claim 9
Dependent Claim
22 words
An adapter as claimed in claim 6 wherein said cross link is pivoted to said depending arm means through a pivot pin.
Claim 10
Dependent Claim
119 words
An adapter for fastening two wiper blades to a windshield wiper drive arm comprising mounting means engageable with said wiper blades and drive arm for positioning said wiper blades in parallel relationship with respect to one another, said mounting means including means for pivotally mounting each of said wiper blades to pivot about axes substantially perpendicular to both said wiper blades, said mounting means mounting one said blade with respect to the other said blade for independent movement in parallel planes substantially normal to the surface of the windshield, and for preventing movement of one of said blades during wiping action from lifting or adversely affecting the other of said blades from wiping engagement with a curved windshield surface.
Claim 11
Dependent Claim
119 words
An adapter for fastening two wiper blades to a windshield wiper drive arm comprising mounting means engageable with said wiper blades and drive arm for positioning said wiper blades in parallel relationship with respect to one another, said mounting means including means for pivotally mounting each of said wiper blades to pivot about axes substantially perpendicular to both said wiper blades, said mounting means mounting one said blade with respect to the other said blade for independent movement in parallel planes substantially normal to the surface of the windshield, and for preventing movement of one of said blades during wiping action from lifting or adversely affecting the other of said blades from wiping engagement with a curved windshield surface.
Claim 12
Dependent Claim
51 words
An adapter for fastening two wiper blades to a windshield wiper drive arm as claimed in claim 8 wherein said mounting means further includes contact pressure means for maintaining substantially equal contact pressure between said blades and the windshield surface regardless of the location of said blades in the wiping cycle.
Claim 13
Dependent Claim
73 words
An adapter for supporting two wiper blades on a windshield wiper drive arm comprising wiper blade engaging means for removably disposing two wiper blades on said drive arm in parallel relationship, said wiper blade engaging means including pivoting means for pivotally mounting each of said wiper blades to pivot about axes substantially perpendicular to both said wiper blades and swivel means for evenly applying contact pressure between said wiper blades and a windshield.
Claim 14
Dependent Claim
73 words
An adapter for supporting two wiper blades on a windshield wiper drive arm comprising wiper blade engaging means for removably disposing two wiper blades on said drive arm in parallel relationship, said wiper blade engaging means including pivoting means for pivotally mounting each of said wiper blades to pivot about axes substantially perpendicular to both said wiper blades and swivel means for evenly applying contact pressure between said wiper blades and a windshield.
Claim 15
Dependent Claim
27 words
An adapter as claimed in claim 10, wherein said wiper blade engaging means includes means for removably mounting said wiper blade engaging means on said drive arm.
Claim 16
Dependent Claim
63 words
An adapter as claimed in claim 10, wherein said wiper blade engaging means includeS a central arm to which said wiper blade''s engaging means is mounted to said drive arm and said pivoting means includes a pair of arms spaced on opposite sides of said central arm and a pivot pin pivotally mounting said pair of arms with respect to said central arm.
References Cited (Backward Citations)
US1775231A
Cited
US1938840A
Cited
US2265266A
Cited
US2324365A
Cited
US2607944A
Cited
US2605491A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |