US4156865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High load clearance sensors
Assignee: Individual
•
Filing: 1977-12-22
•
Granted: 1979-05-29
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Expires: 1997-12-22
Abstract
Abstract In combination with a vehicle, an upwardly extending mast adapted to contact an overhead obstruction, and signalling the driver of the vehicle the presence of the obstruction.
Inventors
- 👤 Walter Lovell
- 👤 Richard R. Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:01
CPC Classifications
B; B60; B60Q; B60Q9/00; B60Q9/002; B60Q9/003; G; G08; G08B; G08B21/00; G08B21/18; G08B21/20; H; H01; H01H; H01H3/00; H01H3/02; H01H3/16
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
64 words
In combination with a vehicle having a front bumper, a mast, a pivot mounting said mast on said front bumper in substantially upright condition with respect to said vehicle, an electric circuit, a signal, a magnetic reed switch on said mast closing the circuit and energizing said signal upon deflection of said mast, and wind actuated means assisting in maintaining the mast normally upright.
Claim 2
Dependent Claim
64 words
In combination with a vehicle having a front bumper, a mast, a pivot mounting said mast on said front bumper in substantially upright condition with respect to said vehicle, an electric circuit, a signal, a magnetic reed switch on said mast closing the circuit and energizing said signal upon deflection of said mast, and wind actuated means assisting in maintaining the mast normally upright.
Claim 3
Dependent Claim
19 words
The combination of claim 1 including a fixed bracket on said front bumper, said pivot being on said bracket.
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) | 1982-05-28 | 1982-11-27 | 1983-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-28 | 1986-11-27 | 1987-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-28 | 1990-11-27 | 1991-05-29 | $7700.00 | Window Closed / Lapsed |