US3634635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for determining the load on a wheel axle in a vehicle
Assignee: Ellis Colchester Ltd
•
Filing: 1970-03-12
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Granted: 1972-01-11
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Expires: 1990-03-12
Abstract
Abstract An axle load detector comprises a post carrying at least one magnetically operated switch at a local position along its length, a separate body incorporating a magnet for operating the switch and means for mounting the body and post, one on a vehicle chassis and one on an axle of the vehicle. Progressive deflection of the axle spring causes the body to move along the post and operate the switch at a spring deflection corresponding to a given axle load.
Inventors
- 👤 Alan Elgar Herbert Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:26
CPC Classifications
H; H01; H01H; H01H36/00; H01H36/0006; H01H36/0046; G; G01; G01G; G01G19/00; G01G19/08; G01G19/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
93 words
An axle load detector comprising a post carrying at least one magnetically operated switch at a local position along its length, a separate body incorporating a magnet for operating the switch and means for mounting the body and post, one on a vehicle chassis and one on an axle of the vehicle, the separate body being movable as the load on the axle increases through a range of positions in one of which the magnet operatEs the switch but in none of which is there physical contact between the post and the body.
Claim 2
Dependent Claim
93 words
An axle load detector comprising a post carrying at least one magnetically operated switch at a local position along its length, a separate body incorporating a magnet for operating the switch and means for mounting the body and post, one on a vehicle chassis and one on an axle of the vehicle, the separate body being movable as the load on the axle increases through a range of positions in one of which the magnet operatEs the switch but in none of which is there physical contact between the post and the body.
Claim 3
Dependent Claim
48 words
A detector as claimed in claim 1 with the post mounted to be vertical on a vehicle chassis or axle and the body mounted on one of the axles and the chassis being movable along a vertical path close to the post as the axle spring progressively deflects.
Claim 4
Dependent Claim
22 words
A detector as claimed in claim 2 in which said switch is connected in an electrical indicating circuit or audible warning circuit.
Claim 5
Dependent Claim
19 words
A detector as claimed in claim 3 in which said switch is adjustable along the length of the post.
Claim 6
Dependent Claim
31 words
A detector as claimed in claim 4 in which said switch is on a carrier carried on a screw-threaded member extending within the post for adjustment by rotation of the thread.
Claim 7
Dependent Claim
16 words
A detector as claimed in claim 5 in which said switch is embedded in its carrier.
Claim 8
Dependent Claim
28 words
A detector as claimed in claim 6 in which one end of the post leads into a connection box which also constitutes the means for mounting the post.
Claim 9
Dependent Claim
39 words
A detector as claimed in claim 5 in which two switches are provided, the carrier for each switch being in the form of an elongated body of semicircular cross section so that the two carriers together form a cylinder.
Claim 10
Dependent Claim
32 words
A detector as claimed in claim 8 having means for adjusting the position of each switch along the length of the post, which means extend beyond the one end of the post.
Claim 11
Dependent Claim
27 words
A detector as claimed in claim 9 in which the extended end of the adjusting means is protected by a tamperproof cover requiring a key for adjustment.
Claim 12
Dependent Claim
24 words
In combination with a vehicle, a detector as claimed in claim 1 being mounted at each end of the vehicle front and rear axles.
Claim 13
Dependent Claim
23 words
In combination with a vehicle, a detector as claimed in claim 1 being mounted at the center of one of the vehicle axles.
References Cited (Backward Citations)
US2843686A
Cited
US2586137A
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US2769967A
Cited
US2779013A
Cited
US2976378A
Cited
US3419877A
Cited
US3404809A
Cited
US3447109A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |