US3664466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheel wedge
Assignee: Central Specialties Co
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Filing: 1970-08-26
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Granted: 1972-05-23
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Expires: 1990-08-26
Abstract
Abstract A one piece molded bilaterally symmetrical wheel wedge is disclosed having a central supporting web, a planar base flange perpendicular to the supporting web, a rear flange intersecting the base flange and at an acute angle therewith, and a concave upwardly facing rim flange which extends at an acute angle from the forward portion of the base flange to the upper portion of the rear flange. A plurality of generally triangular wheel grip wedges extend laterally of the base flange and the ramp flange.
Inventors
- 👤 Jordan I Rotheiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:58
CPC Classifications
B; B60; B60T; B60T3/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
199 words
A one-piece molded bilaterally symmetrical wheel wedge comprising, in combination, a central supporting web having parallel planar substantially imperforate faces, a planar base flange extending laterally in perpendicular relation to the supporting web, a rear flange intersecting the base flange at an acute angle upwardly from the base flange, a concave upwardly facing ramp flange extending laterally from the upper portion of the web and intersecting the base flange forming a wheel engaging point at the forward portion of the wedge, and intersecting the rear flange at its rearward portion, said base flange, rear flange, and ramp flange having proportions including one unit for the width of the base flange, a two unit length for said base flange, and a radius of curvature for the ramp flange, substantially six times the single unit width of the aforesaid recited flanges, a plurality of generally triangular wheel grip wedges on the upper face of the ramp flange with their bases remote from the wheel engaging point and extending laterally across the upper portion of the ramp flange, and a plurality of generally triangular ground engaging wedges extending laterally across the base flange bottom with their bases remote from the wheel point.
Claim 2
Dependent Claim
199 words
A one-piece molded bilaterally symmetrical wheel wedge comprising, in combination, a central supporting web having parallel planar substantially imperforate faces, a planar base flange extending laterally in perpendicular relation to the supporting web, a rear flange intersecting the base flange at an acute angle upwardly from the base flange, a concave upwardly facing ramp flange extending laterally from the upper portion of the web and intersecting the base flange forming a wheel engaging point at the forward portion of the wedge, and intersecting the rear flange at its rearward portion, said base flange, rear flange, and ramp flange having proportions including one unit for the width of the base flange, a two unit length for said base flange, and a radius of curvature for the ramp flange, substantially six times the single unit width of the aforesaid recited flanges, a plurality of generally triangular wheel grip wedges on the upper face of the ramp flange with their bases remote from the wheel engaging point and extending laterally across the upper portion of the ramp flange, and a plurality of generally triangular ground engaging wedges extending laterally across the base flange bottom with their bases remote from the wheel point.
Claim 3
Dependent Claim
39 words
In the wheel wedge of claim 1 above, wall thicknesses of the web, base flange, rear flange, and ramp flange approximating a ratio of 0.54 to 0.57 of the one unit designated as the width of the aforesaid flanges.
Claim 4
Dependent Claim
26 words
In the wheel wedge of claim 1 above, said wheel grip wedges being of the same number on the ramp flange as on the base flange.
Claim 5
Dependent Claim
27 words
In the wheel wedge of claim 3 above, at least three grip wedges on the ramp flange and at least three grip wedges on the base flange.
Claim 6
Dependent Claim
47 words
In the wheel wedge of claim 1 a wheel engaging point defined at the intersection of the ramp flange and the base flange, said wheel engaging point being at a position generally above a line of tangency through the lowermost portion of the base wheel grip wedges.
Claim 7
Dependent Claim
19 words
In the wheel wedge of claim 1, means defining a rope tug haul in the otherwise substantially imperforate web.
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) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |