US4977400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auto ramp safety signal
Assignee: Individual
•
Filing: 1989-07-27
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Granted: 1990-12-11
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Expires: 2009-07-27
Abstract
Abstract An add on signalling apparatus (10) for wheel ramps (50) to warn the operator of a vehicle (100) when one of the wheels (101) of the vehicle (100) has reached a selected location on the horizontal support surface (52) of the wheel ramp (50) by the movement of a pressure plate member (23) against a push button (17) to energize a power source (16) to provide electrical current to an elevated source of illumination (31).
Inventors
- 👤 Harry Jeffries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:39
CPC Classifications
B; B66; B66F; B66F7/00; B66F7/24; B66F7/243
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
156 words
An add on signaling apparatus for wheel ramps having a horizontal top support surface and an upwardly inclined ramp surface wherein the horizontal top support surface is dimensioned to accommodate the wheel of a vehicle; and wherein the apparatus comprises: a primary mounting unit for operatively engaging the apparatus with said ramp support surface including a power source member provided with: a push button to energize the power source member; a pair of electrical leads; and, a threaded nut and bolt arrangement; a signal actuating unit comprising an elongated pressure plate member operatively associated with said ramp support surface and extending substantially across the width of said ramp support surface wherein said pressure plate member is operatively associated with said push button to energize the power source member upon contact of a vehicle wheel with the pressure plate member; and, a signal unit including an elevated source of illumination electrically connected to said power source member.
Claim 2
Dependent Claim
156 words
An add on signaling apparatus for wheel ramps having a horizontal top support surface and an upwardly inclined ramp surface wherein the horizontal top support surface is dimensioned to accommodate the wheel of a vehicle; and wherein the apparatus comprises: a primary mounting unit for operatively engaging the apparatus with said ramp support surface including a power source member provided with: a push button to energize the power source member; a pair of electrical leads; and, a threaded nut and bolt arrangement; a signal actuating unit comprising an elongated pressure plate member operatively associated with said ramp support surface and extending substantially across the width of said ramp support surface wherein said pressure plate member is operatively associated with said push button to energize the power source member upon contact of a vehicle wheel with the pressure plate member; and, a signal unit including an elevated source of illumination electrically connected to said power source member.
Claim 3
Dependent Claim
51 words
The apparatus as in claim 1 wherein said signal actuating unit further comprises an apertured base plate member hingedly connected to said pressure plate member and provided with an enlarged off-set aperture that is dimensioned to allow the passage of the threaded bolt and prevent the passage of the threaded nut.
Claim 4
Dependent Claim
21 words
The apparatus as in claim 1 wherein the signal unit further comprises an elongated support rod for said source of illumination.
Claim 5
Dependent Claim
36 words
The apparatus as in claim 3 wherein said elongated support rod is further provided with a clamp member for operatively engaging the support rod in a vertical disposition relative to the side of the wheel ramp.
Claim 6
Dependent Claim
40 words
The apparatus as in claim 1 wherein said primary mounting unit is further provided with an auxiliary adjustable clamp member for operatively and movably engaging the apparatus at a desired location on the top support surface of the wheel ramp.
Claim 7
Dependent Claim
40 words
The apparatus as in claim 1 wherein said primary mounting unit is further provided with an auxiliary magnetic plate member which is magnetically engaged with the power source member and a portion of the support surface of said wheel ramp.
References Cited (Backward Citations)
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US2502924A
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US3178156A
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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) | 1993-12-10 | 1994-06-11 | 1994-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-10 | 1998-06-11 | 1998-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-10 | 2002-06-11 | 2002-12-11 | $7700.00 | Window Closed / Lapsed |