Wiper heater insert

Details Wiper heater insert Wiper heater insert

1996-05-08

1998-11-03

Walberg, Teresa J.

Electric heating

Heating devices

Combined with diverse-type art device

1525006, B60L 102, A47L 100

Patent

active

058312420

ABSTRACT:
A wiper heater insert includes a coiled heater wire, slip fit insulator, and an air gap between the heater insert and a longitudinal bore of the wiper. These three features minimize warping caused by thermal expansion and maximize the flexibility of the wiper. A press fit bushing at one end provides a readily removable heater element to minimize the cost of replacing a wiper blade and save wear and tear on the heater insert when it is not needed during the summer.

REFERENCES:
patent: 1721613 (1929-07-01), Anselm
patent: 1739411 (1929-12-01), Murphy
patent: 1768727 (1930-07-01), Yonan
patent: 2422761 (1947-06-01), Ungerland
patent: 2733472 (1956-02-01), Karstens et al.
patent: 4325160 (1982-04-01), Burgess
patent: 4387290 (1983-06-01), Yasuda
patent: 5221828 (1993-06-01), Basheer et al.
patent: 5325561 (1994-07-01), Kotlar
patent: 5426814 (1995-06-01), Minnick
patent: 5488752 (1996-02-01), Randolph
patent: 5504965 (1996-04-01), Guell

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