Instant heating system for motor vehicles and the like
Patent 4916287 Issued on April 10, 1990. Estimated Expiration Date: 
December 2, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 2, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1979222 1996972 2078548 2552470 2819373 Control systems for or in association with storage heaters Electric heating system for heating the interior of a motor vehicle prior to starting Circuit for motor vehicles Control system for a heater Patent #: 4302663 InventorsApplicationNo. 278767 filed on 12/02/1988US Classes:219/202, Vehicle or vehicle component219/492, Comprising timing or cycling means392/365PortableExaminersPrimary: Pellinen, A. D.Assistant: Evans, Geoffrey S. Attorney, Agent or FirmForeign Patent References
International ClassesH05B 001/02F24H 003/04 AbstractAn electrically powered heater for instantly heating the interior of motor vehicles and the like uses DC current to actuate a plurality of heating coils located in an under-dash mounted casing. The casing has an air flow passage therein and a motor driven fan arranged to draw ambient air through apertures in the rear of the casing, over the heated coils and back into the vehicle interior through the front of the casing. Each heating coil is connected either singly or in pairs with a manually operated toggle switch so that each coil may be turned on separately or all coils together to adjust the heat and power consumption levels. The fan is separately switched and may be operated independently of the coils. An electronic control circuit for the heater includes an on-off switch and a manually adjustable time delay network which automatically turns off the heating coils after a preselected time. | |
