Abstract Traffic direction control device for automobile roadways normally operable to permit automobile traffic in one direction and prevent such travel in the opposite direction comprising an enlongated casing adapted to be recessed in a roadway transversely thereof and having a top plate supported substantially flush with the surface of the roadway. A shaft is supported longitudinally within the casing and a plurality of prong assemblies is provided each having a helical spring portion mounted on the shaft and provided at one end with a prong portion projecting angularly upward through a slot in the top plate inclined in the direction from which automobile traffic is to be prevented, the other ends of the spring portions of the prong assemblies being connected to a common tie bar extending longitudinally within the casing. A fixed support member is mounted in underlying engagement with the helical spring portions of the prong assemblies to prevent downward deflection and deformation of the assemblies and shaft as a result of impact engagement of the projecting prong portions by the tires of automobiles moving in the direction in which traffic is to be prevented by the device.
Inventors
👤 F Keator
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-05 09:05
CPC Classifications
E; E01; E01F; E01F13/00; E01F13/12; E01F13/123
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
230 words
A traffic direction control device for automobile roadways normally operable to permit travel in a first direction and prevent travel in the opposite direction comprising, an elongated casing adapted to be recessed in a roadway transversely thereof, an elongated top plate removably supported on the casing substantially flush with the surface of the roadway and having a plurality of spaced parallel slots extending inwardly from one side edge of said top plate, a shaft extending longitudinally within the casing and supported therein below and parallel to the top plate, a plurality of prong assemblies in said casing each including a helical spring portion loosely mounted on said shaft having at one end of said spring portion a prong portion projecting angularly upward through one of said slots in said top plate inclined in said opposite direction from which travel is to be prevented and deflectable downwardly by travel in said first direction, a common tie bar extending longitudinally in said casing parallel to said shaft and connected to the other ends of the spring portions of said prong assemblies, and a fixed support member mounted longitudinally within the casing in underlying engagement with the helical spring portions of the prong assemblies operable to prevent downward deflection and deformation thereof and the shaft by impact engagement of said projecting prong portions by the tires of automobiles traveling in said opposite direction.
Claim 2
Dependent Claim
230 words
A traffic direction control device for automobile roadways normally operable to permit travel in a first direction and prevent travel in the opposite direction comprising, an elongated casing adapted to be recessed in a roadway transversely thereof, an elongated top plate removably supported on the casing substantially flush with the surface of the roadway and having a plurality of spaced parallel slots extending inwardly from one side edge of said top plate, a shaft extending longitudinally within the casing and supported therein below and parallel to the top plate, a plurality of prong assemblies in said casing each including a helical spring portion loosely mounted on said shaft having at one end of said spring portion a prong portion projecting angularly upward through one of said slots in said top plate inclined in said opposite direction from which travel is to be prevented and deflectable downwardly by travel in said first direction, a common tie bar extending longitudinally in said casing parallel to said shaft and connected to the other ends of the spring portions of said prong assemblies, and a fixed support member mounted longitudinally within the casing in underlying engagement with the helical spring portions of the prong assemblies operable to prevent downward deflection and deformation thereof and the shaft by impact engagement of said projecting prong portions by the tires of automobiles traveling in said opposite direction.
Claim 3
Dependent Claim
34 words
A device as claimed in claim 1 wherein the fixed support member is of angle cross-section shape having leg portions engaging the helical spring portions of the prong assemblies at circumFerentially spaced points thereon.
Claim 4
Dependent Claim
66 words
A device as claimed in claim 2 wherein the fixed support member has its opposite ends secured to the casing and the intermediate portion of said member is supported by a plurality of cross-members secured transversely in the casing and having recesses therein corresponding to the angular shape of said member to receive and support the latter along a substantial extent of the leg portion thereof.