Snow melting pathway mat apparatus

Details Snow melting pathway mat apparatus Snow melting pathway mat apparatus

1990-01-25

1991-03-26

Walberg, Teresa J.

Electric heating

Heating devices

Combined with diverse-type art device

219345, 219549, H05B 336

Patent

active

050031570

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.

REFERENCES:
patent: 2665561 (1954-01-01), Yocum
patent: 2745942 (1956-05-01), Cohen
patent: 2816201 (1957-12-01), Mulvey
patent: 2844696 (1958-07-01), Custer
patent: 3119918 (1964-01-01), Simon
patent: 3143641 (1964-08-01), Wise
patent: 3418448 (1968-12-01), Pradenas
patent: 4394714 (1983-07-01), Rote
Potter, W. G., "Heating the Building Entrance", Air Cond., Heating, and Ventilating, Oct. 1967, pp. 63-70, 219/213.

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