US4402523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer hitch
Assignee: Individual
•
Filing: 1981-02-23
•
Granted: 1983-09-06
•
Expires: 2001-02-23
Abstract
Abstract A trailer hitch which incorporates a surge brake actuator, together with a load distribution system and sway-damping units. The movable elements of the surge brake actuator system are mounted in sliding plate bearings composed of solid self lubricating resinous material. A frame is included in the movable elements and the load distribution and sway damping systems are anchored to and move with the frame.
Inventors
- 👤 Larry F. Knowles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:01
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/24; B60D1/242; B60D1/247; B60D1/30; B60T; B60T11/00; B60T11/10; B60T11/107
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
128 words
A towed vehicle hitch assembly for coupling a towed vehicle to a towing vehicle comprising: a surge brake means for actuating the braking system of a towed vehicle responsive to deceleration of a towing vehicle, said surge brake means including a brake actuator device mounted between first and second elements of a hitch member, said first and second elements being mounted for relative movement, said brake actuator device being actuatable responsive to said relative movement, at least one sliding bearing, operatively associated with said first and second elements permitting said relative movement, said sliding bearing having generally planer bearing surfaces, at least one of said bearing surfaces being composed of solid self-lubricating resinous material and permitting unimpaired omniplaner movement of said first element relative to said second element.
Claim 2
Dependent Claim
128 words
A towed vehicle hitch assembly for coupling a towed vehicle to a towing vehicle comprising: a surge brake means for actuating the braking system of a towed vehicle responsive to deceleration of a towing vehicle, said surge brake means including a brake actuator device mounted between first and second elements of a hitch member, said first and second elements being mounted for relative movement, said brake actuator device being actuatable responsive to said relative movement, at least one sliding bearing, operatively associated with said first and second elements permitting said relative movement, said sliding bearing having generally planer bearing surfaces, at least one of said bearing surfaces being composed of solid self-lubricating resinous material and permitting unimpaired omniplaner movement of said first element relative to said second element.
Claim 3
Dependent Claim
17 words
A towed vehicle hitch assembly of claim 1 wherein said first and second elements are telescopically mounted.
Claim 4
Dependent Claim
38 words
A towed vehicle hitch assembly of claim 1 wherein said sliding bearing includes a first block of said resinous material mounted to said first element and a second block of said resinous material mounted to said second element.
Claim 5
Dependent Claim
26 words
A towed vehicle hitch assembly of claim 1 wherein each of said generally planer bearing surfaces has an area of at least about four square inches.
Claim 6
Dependent Claim
38 words
A towed vehicle hitch assembly of claim 1 wherein said first and second elements are telescopically mounted to one another to form a telescopable hitch member and said brake actuator device is mounted within said telescopable hitch member.
Claim 7
Dependent Claim
154 words
A towed vehicle hitch assembly for coupling a towed vehicle to a towing vehicle comprising: sway control means for damping swaying movement of a towed vehicle; weight distribution means for distributing the hitch weight of a towed vehicle over the wheels of a towing vehicle; and surge brake means for actuating the braking system of a towed vehicle responsive to deceleration of a towing vehicle, said surge brake means including a telescopable hitch member having a towed vehicle element and a towing vehicle element, said elements being telescopically mounted together for telescoping movement relative to one another, said surge brake means including a brake actuator device mounted between said elements and actuatable responsive to said telescoping movement, said telescopable hitch member including at least one sliding bearing operatively associated with said elements, said bearing having generaly planer bearing surfaces comprising self-lubricating low friction resinous material, said bearing permitting omniplanar unimpaired movement between said elements.
Claim 8
Dependent Claim
154 words
A towed vehicle hitch assembly for coupling a towed vehicle to a towing vehicle comprising: sway control means for damping swaying movement of a towed vehicle; weight distribution means for distributing the hitch weight of a towed vehicle over the wheels of a towing vehicle; and surge brake means for actuating the braking system of a towed vehicle responsive to deceleration of a towing vehicle, said surge brake means including a telescopable hitch member having a towed vehicle element and a towing vehicle element, said elements being telescopically mounted together for telescoping movement relative to one another, said surge brake means including a brake actuator device mounted between said elements and actuatable responsive to said telescoping movement, said telescopable hitch member including at least one sliding bearing operatively associated with said elements, said bearing having generaly planer bearing surfaces comprising self-lubricating low friction resinous material, said bearing permitting omniplanar unimpaired movement between said elements.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-09-05 | 1987-03-07 | 1987-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-05 | 1991-03-07 | 1991-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-05 | 1995-03-07 | 1995-09-06 | $7700.00 | Window Closed / Lapsed |