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US3898429A Expired / Lapsed US ⏱️ 0.0 years remaining

Portable electric water heating device for melting snow

Assignee: Individual
•
Filing: 1974-01-14
•
Granted: 1975-08-05
•
Expires: 1994-01-14
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Abstract

Abstract A portable snow melter for manual operation includes a hollow hand grip of dielectric material having attached thereto an elongated wand carrying a discharge chamber. The grip is provided with a hose connection for supplying a flow of water to the interior of the grip. A manually operated valve is provided on the grip for selective control of the water flow. An electrical resistance wire helix is located in the grip for raising the temperature of the water as it flows through the grip. The wand conveys the heated water to a series of discharge nozzles in the discharge chamber wherefrom the heated water is ejected toward a snowy surface to melt the snow.

Inventors

  • 👤 John Chodak

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 14:17
CPC Classifications
E; E01; E01H; E01H1/00; E01H1/10; E01H1/101; A; A47; A47L; A47L13/00; E01H5/00; E01H5/10; H; H05; H05B; H05B3/00; H05B2214/00; H05B2214/02; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6606

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 315 words
A portable snow melter for manual operating comprising: a. a dielectric housing for an electrical resistance wire, b. a helix of electrical resistance wire disposed in the housing, c. the housing having a low co-efficient of thermal conduction, and an elongated generally hollow tubular form, defining a water flow passage around the electrical resistance wire, d. an integral generally tubular end portion on one end of the housing having a water outlet passage therethrough and defining a socket for a wand, e. a gasket in the socket for defining a water seal between the housing and a wand, inserted in the socket, f. an integral generally tubular enlargement on the other end of the housing, g. a generally tubular insert in the enlargement, and having a first bore therethrough forming a water inlet Passage to the housing, h. a cylindrical bore in the insert transverse to said first bore, i. a rotatable cylindrical valve rotatably seated in the transverse bore, j. a water flow passage through the valve, k. a handle attached to the valve, and extending through a slot in the enlargement, for adjusting the valve from an aligned open position to a transverse blocking closed position relative to the first bore in the insert, l. a means for engaging a water supply hose to the enlargement, m. means connecting the wire helix in the housing to an electric power supply outside the housing, n. an elongated generally tubular wand having one end engaged with the water seal gasket in the socket and defining a water flow passage communicating with the water outlet from the housing, o. an elongated discharge chamber disposed transversely at the other end of the wand and communicating with the water flow passage in the tubular wand, p. a plurality of nozzles on the bottom of the discharge chamber for ejecting heated water in close proximity to a snowy surface.
Claim 2
Dependent Claim 315 words
A portable snow melter for manual operating comprising: a. a dielectric housing for an electrical resistance wire, b. a helix of electrical resistance wire disposed in the housing, c. the housing having a low co-efficient of thermal conduction, and an elongated generally hollow tubular form, defining a water flow passage around the electrical resistance wire, d. an integral generally tubular end portion on one end of the housing having a water outlet passage therethrough and defining a socket for a wand, e. a gasket in the socket for defining a water seal between the housing and a wand, inserted in the socket, f. an integral generally tubular enlargement on the other end of the housing, g. a generally tubular insert in the enlargement, and having a first bore therethrough forming a water inlet Passage to the housing, h. a cylindrical bore in the insert transverse to said first bore, i. a rotatable cylindrical valve rotatably seated in the transverse bore, j. a water flow passage through the valve, k. a handle attached to the valve, and extending through a slot in the enlargement, for adjusting the valve from an aligned open position to a transverse blocking closed position relative to the first bore in the insert, l. a means for engaging a water supply hose to the enlargement, m. means connecting the wire helix in the housing to an electric power supply outside the housing, n. an elongated generally tubular wand having one end engaged with the water seal gasket in the socket and defining a water flow passage communicating with the water outlet from the housing, o. an elongated discharge chamber disposed transversely at the other end of the wand and communicating with the water flow passage in the tubular wand, p. a plurality of nozzles on the bottom of the discharge chamber for ejecting heated water in close proximity to a snowy surface.
Claim 3
Dependent Claim 36 words
A portable snow melter for manual operation: a. the device according to claim 1 and, b. a sheath covering the exterior of the wand and the discharge chamber and having a low co-efficient of thermal conduction.
Claim 4
Dependent Claim 40 words
A portable snow melter for manual operation: a. the device according to claim 1 and, b. the wire helix is folded in half with the respective portions thereof in spaced relation to each other in opposite halves of the housing.
Claim 5
Dependent Claim 37 words
A portable snow melter for manual operation: a. the device according to claim 1 and, b. a tubular grip attached to the outside of the housing, c. the tubular grip having a low co-efficient of thermal conduction.

References Cited (Backward Citations)

US1000335A Cited
US1026564A Cited
US1543012A Cited
US1493450A Cited
US1973327A Cited
US2832086A Cited
US2878359A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-08-04 1979-02-03 1979-08-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-08-04 1983-02-03 1983-08-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-08-04 1987-02-03 1987-08-05 $7700.00 Window Closed / Lapsed

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