US5295759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snow plow compatible speed bumps
Assignee: United States Department of the Army
•
Filing: 1993-04-13
•
Granted: 1994-03-22
•
Expires: 2013-04-13
Abstract
Abstract A speed bump for use in connection with highways located in climates where snow plow is used to clear the highways includes a raised mass fabricated from highway construction material. The raised mass has a crown, a base where the raised mass meets a surface of the highway, and a slope of the raised mass between the crown and the base. The slope presents a profile in the area of the slope at which a snow plow is likely to encounter the speed bump such that the snow plow is lifted smoothly over the speed bump.
Inventors
- 👤 Stephen N. Flanders
- 👤 Robert A. Eaton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:17
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/50; E01F9/529
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
166 words
Speed bumps for use in connection with highways located in climates where a snow plow is used to clear the highways comprising: speed bumps fabricated from highway construction material; said speed bumps each having a length extending in an axial direction substantially across adjacent traffic lines of a road surface; said speed bumps each having a flat crown of fixed width running substantially the length of each bump, wherein said bumps have adjacent ends with tapered portions which taper down toward the road surface both in the axial direction and in a direction perpendicular to the axial direction; said flat crowns extending down said tapered portions to said adjacent ends of said bumps; said tapered portions narrowing inward toward a central axis of the bumps such that the width of the adjacent ends of said bumps are equal to the fixed width of the flat crown; and wherein said tapered portions are structurally configured to allow a snow plow to lift smoothly over said speed bumps.
Claim 2
Dependent Claim
166 words
Speed bumps for use in connection with highways located in climates where a snow plow is used to clear the highways comprising: speed bumps fabricated from highway construction material; said speed bumps each having a length extending in an axial direction substantially across adjacent traffic lines of a road surface; said speed bumps each having a flat crown of fixed width running substantially the length of each bump, wherein said bumps have adjacent ends with tapered portions which taper down toward the road surface both in the axial direction and in a direction perpendicular to the axial direction; said flat crowns extending down said tapered portions to said adjacent ends of said bumps; said tapered portions narrowing inward toward a central axis of the bumps such that the width of the adjacent ends of said bumps are equal to the fixed width of the flat crown; and wherein said tapered portions are structurally configured to allow a snow plow to lift smoothly over said speed bumps.
Claim 3
Dependent Claim
17 words
The speed bumps of claim 1 wherein the profile presented by said tapered portions comprise ramped surfaces.
Claim 4
Dependent Claim
27 words
The speed bumps of claim 1 wherein said construction material is selected from the group consisting of asphalt, portland cement concrete, high-density elastomeric plastic, and corrosion-resistant metal.
References Cited (Backward Citations)
US3975108A
Cited
GB2030197A
Cited
GB2079356A
Cited
GB2104946A
Cited
US4697294A
Cited
FR2596081A1
Cited
US4687370A
Cited
US5106226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-03-21 | 1997-09-20 | 1998-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-21 | 2001-09-20 | 2002-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-21 | 2005-09-20 | 2006-03-22 | $7700.00 | Window Closed / Lapsed |