US3870855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric heating and battery charging system for motor vehicle
Assignee: BERTH WIKSTROM AB
•
Filing: 1974-01-23
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Granted: 1975-03-11
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Expires: 1994-01-23
Abstract
Abstract A combination battery charger (11), motor heater (5), and passenger compartment heater (1) for a vehicle. A central unit (3) mounted on the motor compartment side of the fire wall is adapted to be plugged into a house current socket, and contains a relay (15) for enabling the motor and passenger compartment heater to be controlled by an adjustable timer (2). Alternately, the motor heater may be continuously energized through a switch (16). The system is intended to facilitate cold weather vehicle operation.
Inventors
- 👤 Lars Anders Edlund
- 👤 Berth Atle Wikstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:12
CPC Classifications
B; B60; B60R; B60R16/00; B60R16/02; B60R16/03; B60H; B60H1/00; B60H1/0025; B60H1/22; B60H1/2215
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
165 words
A combination battery charger and heater system for a motor vehicle, said system adapted to be energized by a conventional alternating current power source such as 115 volt a. c. or the like, comprising: a. a warm air heater permanently mounted in the vehicle and including an electric heating element and an electric fan, b. a central control unit permanently mounted in the vehicle and including: 1. an electric connector adapted to be connected to an outside source of alternating current, 2. a battery charger permanently coupled bEtween the connector and the vehicle battery, and 3. a relay coil and associated contacts for coupling the electric heating element to the connector, and c. a timer permanently mounted in the vehicle and connected in series with the vehicle battery and the electric fan for energizing the fan with low voltage DC power, the timer also being connected in series with the relay coil and the battery simultaneously energizing the relay coil with low voltage DC power.
Claim 2
Dependent Claim
165 words
A combination battery charger and heater system for a motor vehicle, said system adapted to be energized by a conventional alternating current power source such as 115 volt a. c. or the like, comprising: a. a warm air heater permanently mounted in the vehicle and including an electric heating element and an electric fan, b. a central control unit permanently mounted in the vehicle and including: 1. an electric connector adapted to be connected to an outside source of alternating current, 2. a battery charger permanently coupled bEtween the connector and the vehicle battery, and 3. a relay coil and associated contacts for coupling the electric heating element to the connector, and c. a timer permanently mounted in the vehicle and connected in series with the vehicle battery and the electric fan for energizing the fan with low voltage DC power, the timer also being connected in series with the relay coil and the battery simultaneously energizing the relay coil with low voltage DC power.
Claim 3
Dependent Claim
66 words
A combination battery charger and heater system for a motor vehicle, said system adapted to be energized by a conventional alternating current power source such as 115 volt a. c. or the like, comprising: a. a warm air heater permanently mounted in the vehicle and including an electric heating element and an electric fan, b. a central control unit permanently mounted in the vehicle and including:
Claim 4
Dependent Claim
66 words
A combination battery charger and heater system for a motor vehicle, said system adapted to be energized by a conventional alternating current power source such as 115 volt a. c. or the like, comprising: a. a warm air heater permanently mounted in the vehicle and including an electric heating element and an electric fan, b. a central control unit permanently mounted in the vehicle and including:
Claim 5
Dependent Claim
14 words
an electric connector adapted to be connected to an outside source of alternating current,
Claim 6
Dependent Claim
14 words
an electric connector adapted to be connected to an outside source of alternating current,
Claim 7
Dependent Claim
13 words
a battery charger permanently coupled bEtween the connector and the vehicle battery, and
Claim 8
Dependent Claim
13 words
a battery charger permanently coupled bEtween the connector and the vehicle battery, and
Claim 9
Dependent Claim
85 words
A system according to claim 1, further comprising a vehicle motor heater adapted to be energized by the outside source of alternating current through the connector under control of the relay contacts of the central control unit, said unit further comprising a manual switch connected in parallel with the relay contacts to thereby enable a choice between timer controlled operation of the motor heater simultaneously with the warm air heater and continuous operation of the motor heater during the whole time the system is operable.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |