Disclosed is an electric heating device comprising an electric radiator (10) heating the air which penetrates said radiator. The radiator is provided with a housing (12), at least one resistive element that is mounted in the housing and is formed by at least one zigzag-shaped metal ribbon (22) which is disposed such that said metal ribbon is directly exposed to the air penetrating the housing, and a circuit (30) controlling the electric power supplied to the resistive element(s) which is/are connected to a source of power. The electric radiator (10) comprises a set of individual heating modules (20) which are disposed parallel to each other inside the housing (12) and in such a way that said heating modules (20) are directly exposed to the air penetrating the housing. Each heating module (20) is provided with a folded or undular metal ribbon (22) and an electronic interrupter which is controlled by the control circuit (30) selectively blocking the supply of electric power to the metal ribbon (22).

Electric heating device, particularly for a heating or air-conditioning unit in a vehicle

An air heating apparatus comprises a auxillary PTC heating element in an air duct lying parallel to the length of the duct to define first and second air passages separated by the heating element. The PTC heating element has apertures through which passes air to be heated; the two air passages thereby communicating with each other by means of the apertures through the heating element. First and second valves are located at upstream and downstream ends of the first and second air passages for selectably closing and opening the upstream and downstream ends of the first and second air passages, respectively.

Dual air passage heating apparatus with ceramic heater element

A system for the storage, retrieval and manipulation of significantly large amounts of data to produce highly complex and visually pleasing graphics within the time constraint of a full motion video raster scanning system by storing memory data corresponding to each of the individual object elements to be displayed over a period of time, storing lists of identification and display instruction data with respect to those object elements, selecting desired identification and display instruction data for selected display elements appropriate to a particular instant of time and placing such selected data into an appropriate memory, and then creating, from those selected instructions and from the stored data relating to the selected object elements, display data which, in real time, produces the desired display. The initially stored identification and display instructions are preferably in the form of a linked list with the items in each list arranged in order of desired visible priority. The display instructions can be effective to select for display from a given object element only predetermined sub-elements, and data can include animation instructions linked in order of time, preferably with linking both forward and backward in time. Data processing means can be effective to modify either or both types of stored memory data while a separte data processing means is engaged in producing the display data from the selected instructions and the object elements data stored in memory.

Graphics display system and method with enhanced instruction data and processing

A multiple temperature control system for a motor vehicle comprises a plurality of supplemental heat sources downstream from the air conditioner/heater unit which may be controlled to provide extra-heated air to either the driver position or the passenger position within the passenger compartment of the motor vehicle

Multiple temperature control system for an automotive vehicle

A motor vehicle, for example an electric vehicle, of the kind having a propulsion motor with a low heat loss, i.e. which emits heat at a relatively low rate, has a heating and ventilating apparatus for its cabin. The heating and ventilating apparatus comprises: first heating and ventilating means including a first blower feeding air into a first duct through a first heating radiator, through which fluid heated by the propulsion motor flows; second heating and ventilating means including a second blower feeding air into a second duct through a second heating radiator which is powered electrically; a common delivery duct which is fed by the first and second ducts; and control means for selectively distributing the air streams delivered respectively by the first and second ducts into the delivery duct.

Heating and ventilating apparatus for the cabin of a motor vehicle having a low heat loss motor

To supply heat to the passenger compartment of an automobile car body immediately upon entering it, an approximately triangular housing has two branch outlet ducts converging from the opposite ends of a main inlet cross duct including a fan chamber containing a reversible electric fan This fan initially draws cold air into the fan chamber of the main inlet cross duct and forces it through an electric heating coil and then through one of the two converging branch outlet ducts to a common outlet containing a freely pivoted damper which in response to the pressure of the forced air swings to cut off air flow from the other converging branch outlet duct and at the same time directs the heated air through a horizontal transverse duct into the passenger compartment When the compartment has been thus heated preliminarily, the operator de-energizes the electric heating coil and reverses the fan, causing it to direct outside air through the conventional engine radiator-connected liquid heater of the automobile and then through the opposite converging branch outlet duct Thereupon the thus-forced air causes the damper to swing to an opposite position, closing the first converging branch outlet duct and thenceforth supplying air heated by the conventional heater to the passenger compartment Electricity for the electric heating coil is provided by the car alternator and/or storage battery

Johnnie L. Hill

Papers

Automobile auxiliary heater