An antitheft device comprising a timing circuit and preferably a rotary lock switch operated by a key will interrupt an utilization apparatus such as the ignition circuit of an automobile and sound an alarm unless the lock switch can be unlocked from a first locking position to a second locking position, and unless the lock switch can be unlocked from the second locking position to a third locking position neither earlier than a first predetermined time nor later than a second predetermined time...

An electronic timepiece is provided wherein the time is displayed on a transmissive ceramic material by electrically transforming the signal from a standard signal source such as a crystal oscillator. The display is characterized by a driving circuit secured to a surface which is opposite the surface to which the transmissive ceramic material is secured.

An electronic calculator for authenticating messages between financial institutions, e.g. banks, by utilizing a coded test number transmitted with the message. The calculator includes a set of memory codes to provide a numeral indicative of the message and a totalizer for the numerals in the code. The calculator enables the test numeral to be deciphered, either when sending or receiving, in an automatic fashion from programmed cards which may be made, checked, corrected or copied using the same ...

An electronic timer including a pulse source, counter means for counting the pulses from said source, and means for producing a series of displays representing the instantaneous count on the counter means at a series of different times, with the counter being adapted to count continuously up to the time of a particular readout actuation of the device, and to thereafter continue counting from that time to the time of a next successive actuation.

A method of fabricating an electrical circuit -- usually employing small electronic components -- on a generally rigid electrically conductive panel. The panel has apertures through which insulating collars are inserted, the necessary wiring and components then being built up on the panel by inserting the wires through the collars. The wires through each collar respectively are then united into electrical connection by crimping of the collars.

To facilitate acceleration or deceleration of the stepping rate of a clockwork motor responding to pulses from a frequency divider connected to a crystal-controlled oscillator, an Exclusive-OR gate is inserted between the oscillator and the divider and has another input connected to several stage outputs of the divider by way of a branched feedback circuit. The divider and its feedback circuit form a time-delay loop whose delay time corresponds to a small fraction of a cycle of the oscillator fr...

An electronic timepiece, having an oscillator circuit producing a high frequency time standard signal and a divider circuit formed from a plurality of series-connected divider stages for producing low frequency timekeeping signals in response to said time standard signal, is provided with an adjusting circuit adapted to set each divider stage to thereby adjust the time-keeping signal produced thereby. The adjusting circuit allows a setting signal from a memory circuit to be applied to each divid...

Digits of numerical information, i.e. the calculation results obtained by an arithmetic operation device, are stored successively into a memory device. At the completion of the arithmetic operation, the most or least significant digit of the numerical information is shifted to the least significant digit position of the memory device. When required, the digits are successively read out from the least significant digit position in response to shift instruction signals supplied to the memory devic...

An all purpose electronic enclosure of electrically nonconductive material that adapts to various configurations and uses with a minimum of parts. A unitary receptacle portion has internal grooves to receive printed circuit boards, dividers and the like. One end of the receptacle portion is open. An optional cover closes the open end. Different cover constructions facilitate electrical connectors and mounting arrangements. External tracks on one or more sides of the enclosure receive plate-like ...

A fuze for ordnance projectiles to be launched from a vehicle is armed, after separation from its launcher, by mechanical closure of switches with the aid of a delayed-action squib detonating by an electric charge stored on a capacitor. The fuze system includes means for charging the above capacitor at the time of launch, thus insuring the inert state of the fuze under conditions of storage, transportation and loading into the launch vehicle.