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US5003157A Expired / Lapsed US ⏱️ 0.0 years remaining

Snow melting pathway mat apparatus

Assignee: Individual
•
Filing: 1990-01-25
•
Granted: 1991-03-26
•
Expires: 2010-01-25
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Abstract

Abstract An apparatus utilizing a flexible web construction, including a series of electrical heating resistance elements directed therethrough. The mat includes a ribbed upper surface overlying a ribbed bottom surface. The upper surface includes sloping side walls positioned medially about a central ridge to direct fluid downwardly from an upper surface of the mat. Hollow chambers are optionally formed throughout the mat longitudinally thereof overlying the electric coils to cushion the coils and simultaneously produce heat chambers for maintaining a constant temperature throughout the web construction. Further, fiber optic cables may be included in side chambers longitudinally coextensive with side edges of the web to illuminate boundary portions of the web for individuals during limited light conditions.

Inventors

  • 👤 Dennis Hargrove

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 15:53
CPC Classifications
F; F24; F24D; F24D13/00; F24D13/02; F24D13/022; E; E01; E01C; E01C11/00; E01C11/24; E01C11/26; E01C11/265; F21; F21V; F21V33/00; F21V33/006; G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0005; H; H05; H05B; H05B3/00; H05B3/20; H05B3/34; H05B3/36; H05B2203/00; H05B2203/026; H05B2214/00; H05B2214/02; Y; Y02; Y02A; Y02A30/00; Y02A30/60; Y02B; Y02B30/00

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 259 words
A snow melting pathway mat apparatus defined as a flexible web, including a forward end, a rear end, and spaced longitudinal side ends, the web including spaced parallel heating elements directed through the web, each of the heating elements in electrical communication with one another, including a first electrical connector line directed outwardly of the web adjacent a rear end thereof, and further including a second electrical connector line directed outwardly of the web adjacent the forward end thereof, including electrical socket associated with the electrical connector line, and wherein the web includes a generally planar bottom surface, the bottom surface including a series of parallel ribs directed orthogonally relative to the side edges of the web, including bottom surface channels between the ribs to conduct fluid flow therethrough, the web further including a central ridge directed longitudinally and medially of a top surface of the web and coextensive with the top surface of the web, the top surface further including spaced parallel top surface ribs directed throughout the top surface of the web arranged generally orthogonally relative to the central ridge, each of the top surface ribs including a roughened top portion to enhance traction thereon, and wherein the web further includes spaced parallel longitudinal chambers coextensive with and longitudinally arranged relative to the web, each of the chambers includes a plurality of spaced, parallel further electrical heating elements arranged orthogonally relative to the heating elements, the further heating elements and the heating elements in electrical communication with one another, the chambers defined by generally elongate parallelepiped configuration.
Claim 2
Dependent Claim 259 words
A snow melting pathway mat apparatus defined as a flexible web, including a forward end, a rear end, and spaced longitudinal side ends, the web including spaced parallel heating elements directed through the web, each of the heating elements in electrical communication with one another, including a first electrical connector line directed outwardly of the web adjacent a rear end thereof, and further including a second electrical connector line directed outwardly of the web adjacent the forward end thereof, including electrical socket associated with the electrical connector line, and wherein the web includes a generally planar bottom surface, the bottom surface including a series of parallel ribs directed orthogonally relative to the side edges of the web, including bottom surface channels between the ribs to conduct fluid flow therethrough, the web further including a central ridge directed longitudinally and medially of a top surface of the web and coextensive with the top surface of the web, the top surface further including spaced parallel top surface ribs directed throughout the top surface of the web arranged generally orthogonally relative to the central ridge, each of the top surface ribs including a roughened top portion to enhance traction thereon, and wherein the web further includes spaced parallel longitudinal chambers coextensive with and longitudinally arranged relative to the web, each of the chambers includes a plurality of spaced, parallel further electrical heating elements arranged orthogonally relative to the heating elements, the further heating elements and the heating elements in electrical communication with one another, the chambers defined by generally elongate parallelepiped configuration.
Claim 3
Dependent Claim 34 words
An apparatus as set forth in claim 1 wherein each of the side edges of the web is of an arcuate configuration to enhance directing of moisture from the top surface of the web.
Claim 4
Dependent Claim 49 words
An apparatus as set forth in claim 2 wherein the web further includes illumination means mounted coextensively with and parallel to one another and integrally and fixedly secured to the side edges of the web for enhanced illumination of the side edges of the web during limited light conditions.
Claim 5
Dependent Claim 39 words
An apparatus as set forth in claim 3 wherein the illumination means each includes an elongate, transparent chamber, each transparent chamber defined by a generally cylindrical configuration and each transparent chamber including a flexible fiber optic cable directed therethrough.
Claim 6
Dependent Claim 50 words
An apparatus as set forth in claim 4 wherein each fiber optic cable includes a connector end, and further including an illumination source, each connector end receivable within the illumination source, and each illumination source including an illumination bulb therewithin to direct illumination through each of the fiber optic cables.

References Cited (Backward Citations)

US2665561A Cited
CH289857A Cited
US2745942A Cited
FR1138086A Cited
US2816201A Cited
US2844696A Cited
US3119918A Cited
US3143641A Cited
US3418448A Cited
US4394714A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-03-25 1994-09-24 1995-03-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-03-25 1998-09-24 1999-03-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-03-25 2002-09-24 2003-03-26 $7700.00 Window Closed / Lapsed

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