US3580604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mud flaps for dump trucks
Assignee: Trane Co
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Filing: 1969-09-18
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Granted: 1971-05-25
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Expires: 1989-09-18
Abstract
Abstract A two-part mud flap assembly for dump trucks, one flap being adjacent the upper portion of the wheel and being stationary with the truck frame; the other lower flap normally lapping the upper flap and slidable into confronting relation with the upper flap. A swingable arm mounting the lower flap normally held down by the dump box; a spring to swing the arm and lower flap upwardly as the dump box is raised.
Inventors
- 👤 Thomas F Overend
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:45
CPC Classifications
B; B62; B62D; B62D25/00; B62D25/08; B62D25/16; B62D25/18; B62D25/188
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
125 words
A mud flap assembly for trucks with tiltable dump boxes, comprising a pair of flaps to be suspended respectively adjacent the upper and lower portions of the truck rear wheels, means mounting the upper flap in substantially stationary position, an upwardly swingable arm having a rear end mounting said lower flap for vertical movement into substantially confronting relation with the upper flap to avoid being moved against the rear wheel as the truck is moving rearwardly, the arm extending forwardly along a portion of the dump box of the truck to a pivot mounting the arm for vertical swinging, and means for swinging the arm as the dump box is raised and lowered, and including a lug movable with the box in operating the arm.
Claim 2
Dependent Claim
125 words
A mud flap assembly for trucks with tiltable dump boxes, comprising a pair of flaps to be suspended respectively adjacent the upper and lower portions of the truck rear wheels, means mounting the upper flap in substantially stationary position, an upwardly swingable arm having a rear end mounting said lower flap for vertical movement into substantially confronting relation with the upper flap to avoid being moved against the rear wheel as the truck is moving rearwardly, the arm extending forwardly along a portion of the dump box of the truck to a pivot mounting the arm for vertical swinging, and means for swinging the arm as the dump box is raised and lowered, and including a lug movable with the box in operating the arm.
Claim 3
Dependent Claim
25 words
The mud flap assembly according to claim 1 and said lug being mounted on the dump box and engaging the arm to produce movement thereof.
Claim 4
Dependent Claim
41 words
The mud flap assembly according to claim 1 and said arm changing its angular orientation during swinging thereof, said lug simultaneously bearing against the arm and camming therealong as the dump box is moved to move the arm and lower flap.
Claim 5
Dependent Claim
35 words
The mud flap assembly according to claim 1 and a spring connected with the arm and moving and holding the arm against said lug, the lug and spring respectively swinging the arm in opposite directions.
Claim 6
Dependent Claim
56 words
The mud flap assembly according to claim 4 and said lug urging the arm downwardly and the spring urging the arm upwardly to lift the lower flap as the dump box is raised, said lug holding the arm and lower flap downwardly, against the force of the spring when the dump box is in lowered position.
Claim 7
Dependent Claim
27 words
The mud flap assembly according to claim 1 and the arm having a rigid cantilever affixed thereto and extending transversely therefrom and suspending the lower flap therefrom.
Claim 8
Dependent Claim
28 words
The mud flap assembly according to claim 6 and the lower portion of the upper flap overlapping the upper portion of the lower flap and confronting said cantilever.
Claim 9
Dependent Claim
36 words
The mud flap assembly according to claim 6 and including a stationary cantilever mounting the upper flap, the arm underlying said stationary cantilever to be restrained in upper movement thereby when the lower flap is raised.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |