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US3920348A Expired / Lapsed US ⏱️ 0.0 years remaining

Traffic lane indicator

Assignee: Olympic Machines Inc
•
Filing: 1974-09-09
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Granted: 1975-11-18
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Expires: 1994-09-09
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Abstract

Abstract A traffic lane indicator which has a cylindrical, outer housing formed of a deformable material with a plurality of longitudinal slots circumferentially spaced around its lower end. A tapered base plate is laid upon the bottom of a hole in the pavement so that the housing can be rammed downwardly against it. This causes the lower end of the housing to expand outwardly against the hole wall for permanently imbedding the housing in the pavement. A cylindrical sleeve is removably mounted in the housing and contains a vertically reciprocating piston bearing a protruding, reflective top surface. The piston may be biased with a thermally responsive, bi-metallic spring which withdraws the piston from protrusion above the pavement at freezing temperatures.

Inventors

  • 👤 Harry D Paulos

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 06:37
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/50; E01F9/553; E01F9/565; E01F9/571; E01F9/40

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 244 words
A traffic lane indicator for being imbedded in a hold formed in a pavement and accommodating a resurfacing of said pavement, said lane indicator comprising: a. a generally tubular, deformable, outer housing formed with a plurality of circumferentially spaced longitudinal slots formed around its lowermost end and internal threads near its uppermost end; b. a base plate positionable in the bottom of said hole and having a frustoconical peripheral surface tapering outwardly and downwardly from a diameter substantially equal to the internal diameter of the undeformed housing to a significantly greater diameter whereby said base plate may be wedged within the lower end of said housing for deforming the housing into an outwardly deflected skirt for anchoring said housing in said hole; c. a tubular cylindrical sleeve removably, threadedly engaged to the interior of said housing, said sleevE extending upwardly within said housing with its upper end substantially flush with the surface of the pavement; d. a piston vertically reciprocable within said sleeve and formed with a generally frustoconical top end, said piston being resiliently biased upwardly and having a stop means for limiting its upward travel so that it reciprocates between a first relatively relaxed position having the frustoconical top end protruding above said pavement and extending downwardly at least to the level of said pavement and a second depressed position having the top end not protruding above the pavement; and e. light reflector means mounted to the top end of said piston.
Claim 2
Dependent Claim 244 words
A traffic lane indicator for being imbedded in a hold formed in a pavement and accommodating a resurfacing of said pavement, said lane indicator comprising: a. a generally tubular, deformable, outer housing formed with a plurality of circumferentially spaced longitudinal slots formed around its lowermost end and internal threads near its uppermost end; b. a base plate positionable in the bottom of said hole and having a frustoconical peripheral surface tapering outwardly and downwardly from a diameter substantially equal to the internal diameter of the undeformed housing to a significantly greater diameter whereby said base plate may be wedged within the lower end of said housing for deforming the housing into an outwardly deflected skirt for anchoring said housing in said hole; c. a tubular cylindrical sleeve removably, threadedly engaged to the interior of said housing, said sleevE extending upwardly within said housing with its upper end substantially flush with the surface of the pavement; d. a piston vertically reciprocable within said sleeve and formed with a generally frustoconical top end, said piston being resiliently biased upwardly and having a stop means for limiting its upward travel so that it reciprocates between a first relatively relaxed position having the frustoconical top end protruding above said pavement and extending downwardly at least to the level of said pavement and a second depressed position having the top end not protruding above the pavement; and e. light reflector means mounted to the top end of said piston.
Claim 3
Dependent Claim 30 words
A traffic lane indicator according to claim 1 wherein said tubular cylindrical sleeve extends substantially above the upper end of said housing to the surface level of a repavement layer.
Claim 4
Independent Claim 95 words
A method for reusing a traffic lane indicator after resurfacing a pavement, wherein the traffic lane indicator is of the type having an outer housing permanently anchored in the pavement, a sleeve removably mounted within said outer housing and a piston vertically, reciprocably mounted in said sleeve said method comprising: a. removing said sleeve and said piston from said housing; b. removably engaging a closure plug in said housing; c. resurfacing said pavement; d. removing said plug and the pavement immediately above said plug; and e. mounting an extension sleeve and piston within said housing.
Claim 5
Independent Claim 95 words
A method for reusing a traffic lane indicator after resurfacing a pavement, wherein the traffic lane indicator is of the type having an outer housing permanently anchored in the pavement, a sleeve removably mounted within said outer housing and a piston vertically, reciprocably mounted in said sleeve said method comprising: a. removing said sleeve and said piston from said housing; b. removably engaging a closure plug in said housing; c. resurfacing said pavement; d. removing said plug and the pavement immediately above said plug; and e. mounting an extension sleeve and piston within said housing.

References Cited (Backward Citations)

US1496811A Cited
US1797498A Cited
US1825667A Cited
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US1905612A Cited
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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) 1978-11-17 1979-05-19 1979-11-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-11-17 1983-05-19 1983-11-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-11-17 1987-05-19 1987-11-18 $7700.00 Window Closed / Lapsed

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