Matches 151 - 200 out of 318 < 1 2 3 4 5 6 7 >
Match Document Document Title
4684853 Garage door opener using transmitter with SAW oscillator modulator  
A radio frequency (r-f) transmitter has an electric oscillator circuit for producing an oscillating r-f signal in an antenna. A feedback sub-circuit of the oscillator circuit includes a surface...
4672280 Mobile robot calling system  
A mobile robot calling system has a mobile robot normally waiting at a home position and connected to an AC power supply such that its battery is charged by the AC power supply in the wait status,...
4668899 Overhead garage door lock for use with automatic opener  
A garage door locking mechanism incorporating a reversible motor mounted centrally on an overhead garage door and coupled with oppositely disposed rotary latches which are selectively rotated to...
4621375 Remote control system for constructional machinery  
For the remote control of construction machinery, more specially in the form of the distribution mast or boom of a concrete pump, in the invention a transmission system has a radio remote control...
4618804 Remote control apparatus for opening and shutting a blind  
A remote control system for bidirectionally rotating an electric motor, such as for opening and closing a blind or the like, comprises a hand-held transmitter including a transmitting circuit...
4614900 Remote controlled driving system for a boat  
An electric trolling motor is remotely controlled by a hand held or foot operated radiant energy transmitter coacting with a receiver, the trolling motor and a turning or directional motor...
4612485 Overhead doors operating apparatus  
Overhead doors operating apparatus uses a single motor power unit to operate a selected one of a plurality of overhead doors through a selectively energized coupling, such as an electromagnetic...
4598237 Power window control apparatus  
A power window control apparatus has a transmitter, detachably mounted to a fixed member in a compartment, for transmitting coded infrared ray signals corresponding to opening/closing operations of...
4584504 Integrated circuit for driving a D.C. motor having operational modes  
The present invention relates to an integrated circuit for driving a d.c. motor with radio control comprising a receiving circuit for receiving and detecting certain signals transmitted from a...
4572996 Control unit for model vehicles  
A control unit for model vehicles, such as model railway trains, model automobiles, etc. For independent operation of several model vehicles on a common electric circuit, it is known to allocate to...
4564791 Operators for sliding gates  
Operators for sliding gates including a solenoid-operated detent for engaging a gear of the gate drive motor shaft speed reducer and locking the associated gate, and a key-operated cam for...
4554691 Patient lifting apparatus  
Lift apparatus by which invalids are translated into various positions through the use of a radio-controlled mechanism operable by the invalid from the lift transport platform. Linear actuators...
4488094 Linear integrated circuit for driving a d.c. motor with radio control  
The present invention relates to a linear integrated circuit for driving a d.c. motor with remote radio control comprising an amplifier B 1 to amplify the signal transmitted by the transmitter,...
4467249 Remote automobile window control  
Apparatus is provided by which a motor vehicle window can be raised and lowered remotely by the use of a unique circuit which interfaces with the motor provided in the vehicle for such purposes. A...
4464651 Home security and garage door operator system  
A home security and garage door operator system includes a gas sensor for detecting the level of toxic gas in the garage. When the gas level exceeds a predetermined threshold the garage door is...
4413907 Remote control surveying  
A method and apparatus for remote control surveying which eliminates the need for a rod man or other assistant while performing surveying operations with an electronic distance measuring device....
4413210 Automatic guiding device for an indoor goods transporter  
An automatic guiding device for an indoor goods transporter comprising a path detector being responsive to stationary guiding facilities and controlling a steering means of the vehicle.
4400698 Single channel radio control system  
A single channel continuous wave transmitter and receiver to produce a control signal to change the direction of the drive motor of a toy such as a model car having steerable wheels. A single...
4385296 Remote-controlled automatic control apparatus  
A remote-controlled automatic door control apparatus includes a door, a driving unit connected to the door for driving the door to open and closed positions, and a control arrangement for...
4371814 Infrared transmitter and control circuit  
An infrared transmitter and control circuit for a load such as a ceiling fan which is capable of starting and regulating the speed of the ceiling fan as well as reversing the direction of the...
4365250 Garage door operation control apparatus  
A garage door operation control apparatus includes a door operating system for opening and closing the main door of a garage, a main detection circuit for detecting the open or closed condition of...
4360808 Radio control apparatus with voice transmission capability  
A radio controller for radio control of model vehicles and the like. The controller can be placed in a control mode wherein vehicle functions such as motor speed, direction, horn and lights are...
4359672 Motor starter with optically coupled pushbutton station  
A motor starter includes a line contactor having a coil connected to a control circuit. The control circuit includes one or more remote pushbutton stations which are connected in a control loop by...
4357564 Closure operator control  
A motorized operator is used for control of a closure, e.g., a garage door operator. Where the garage door is an upward opening door, there are four conditions for operation of the control system,...
4349986 Radio-controlled toys  
A radio-controlled toy has a transmitter designed to transmit a signal amplified and modulated with a low-frequency square signal by the supply of power effected by closing a switch and a receiver...
4304193 Remote control apparatus for controlling animals  
Electronic transmitter means are used for generating and emitting a control signal which is detected by an animal-handling mechanism associated with the animal for physically manipulating the...
4301397 DC Antenna rotator system  
Rotary positioning of an antenna is provided from a remote control apparatus using a first reversible motor at the antenna and a second reversible motor at the control. A rotary switch at the...
4299301 Random motion mechanisms  
Random motion mechanisms having at least one driving element that is operated at randomly varying speeds. One such mechanism is a self-propelled vehicle which has at least one randomly operated...
4284941 Data communications between fixed and moving terminals  
A data communications system between fixed and moving terminals wherein a conductor connected to the fixed terminal and disposed in the travel path of the moving terminals supports lateral guidance...
4281734 Multi-function control system  
A multi-function control system for generating control signals in response to the movement of an operator's body is disclosed. An arrangement of the multi-function control system for controlling...
4275394 Radio control driving circuit device  
A radio control driving circuit device used for a model device having a radio control system comprising a d-c power supply, two electric motors and a receiver, characterized in that two transistors...
4207502 Motor driving system for remote controlled mobile toys  
Separate high low pass of frequency filters are employed in a circuit to control the input response signal to a pair of motors for operating a mobile toy in response to a frequency modulated radio...
4204146 Servo-control method and device  
Method and device for servo-controlling the distance of an object from a transiting surface to be followed by said object and capable of reflecting microwaves, by exploiting a control signal,...
4160253 Radio controlled, battery-operated model toy  
A radio controlled, battery-operated model toy having an electric motor, a battery device for supplying energy to the electric motor, a radio control receiver, and a servo mechanism operated by the...
4143307 Motor speed control circuit apparatus  
A pulse width modulated DC motor speed control circuit for models including a demodulator for receiving an input pulse having a width which may vary from a reference width, and for generating a...
4142137 Operator motor control  
A control system for a power driven operator for garage doors and the like comprising an operator control circuit having a DC voltage source operating as the power supply for an electronic...
4118871 Binary inspection probe for numerically controlled machine tools  
An inspection probe is mounted in the spindle of a numerically controlled machine tool and is moved toward a workpiece therein by the numerical controls until it makes contact with the workpiece....
4091328 Remote control radio system  
A system for individually adjusting a plurality of remotely located servo units according to the position of a manual control for each servo unit by broadcasting a carrier wave that is switched on...
4071811 Model helicopter throttle governor/collective pitch control apparatus  
A throttle governor/collective pitch control apparatus for radio controlled model helicopters for proportionally controlling either the model helicopter rotor speed or the rotor collective pitch,...
4038590 Pulse code modulation radio control system  
A pulse code modulation communication system adapted in a preferred embodiment to the remote control of a flying model aircraft. The positions of the various control sticks are represented by a...
4027210 Method and control system to limit shifting movement of a winning tool for a tunneling machine  
The winning tool carried for universal movement by the frame of a tunneling machine is controlled by a system and method to limit tool movement in a manner to form a tunnel with a desired cross...
4010409 Automatic vehicle guidance systems  
In a frequency selective steering system for automatic vehicle guidance, a phase locked loop is used to derive from a sum signal containing wanted and unwanted signal frequencies a reference signal...
3993154 Wheelchair-mounted control apparatus  
A wheelchair mounted control system may be activated to enable propelling of the wheelchair at different predetermined speeds, to cause portions of the wheelchair to recline or be elevated, or to...
3983474 Tracking and determining orientation of object using coordinate transformation means, system and process  
An electromagnetic field which nutates about a pointing vector is used to both track or locate a remote object in addition to determining the relative orientation of the object. Apparatus for...
3947741 Boat guidance system  
A guidance system for controlling the path of a boat comprising a first conductor disposed below the surface of water in a first elongated loop and connecting at the terminals thereof across an...
3946291 Three motor tape drive mechanism  
Apparatus for remotely controlling the motor tape drive mechanism of an audio tape recorder or the like. In one embodiment, the apparatus comprises a plurality of semiconductors controlled by a...
3911336 Plural motor drive including a servo motor control system  
The present invention relates to a servo motor control system in which an electric motor is instantaneously energized by movement of a relatively weak servo motor of the type normally actuated by...
3868565 OBJECT TRACKING AND ORIENTATION DETERMINATION MEANS, SYSTEM AND PROCESS  
A field (e.g., a magnetic field) which nutates about a pointing vector is used to both track or locate an object in addition to determining the relative orientation of this object. Apparatus for...
3860906 SELF-PROPELLED DIRECTION MARKER  
The invention relates to a self-propelled movable direction marker device for guiding the path of a machine movable relative thereto, the device comprising a body provided with means enabling it to...
3858116 PULSE-WIDTH MODULATION CONTROL SYSTEM AND DISCRIMINATOR THEREFOR  
Disclosed herein is a pulse-width modulation control system including a switching circuit connected to a transmitter of pulsed RF signals, wherein the switching circuit is for selecting different...
Matches 151 - 200 out of 318 < 1 2 3 4 5 6 7 >