Datakey, Inc.

Xata Corporation

Biliti Corporation

William P Flies

William H Wehrmacher

The invention is an equipment or vehicle battery circuit cutoff device that mounts at the battery chassis ground mounting hole and accepts the original (in place) battery ground cable (single cable) to provide a secure electrical connection in the use configuration (HOT) and a simple quick, safe, and absolute change of state to the electrical cutoff configuration (CUT). The device employs a heavy compression spring that clamps the battery ground cable into the device when compression spring tension is released against the cable end and allows the quick release of the ground cable when a threaded stud knob or a lever assembly lifts the spring tension to allow the ground cable to be quickly removed. There is no internal switch in the device; the only switch being the presence (HOT) or absence (CUT) of the ground cable in the cutoff device insertion slot. Maximum current flow is supported with this design since the cable is locked against a heavy copper bar in the closed circuit state (HOT) so that the current flow is limited only by the capacity of the cable rather than the configuration of internal cutoff switch contacts. The cable clamping force in the closed circuit (HOT) position is constant and resistant to equipment vibration since the clamping force is derived from a high force (40 foot pounds or greater) compression spring rather than a bolt which may vibrate loose and/or may not have been adequately tightened by the equipment operator.

Battery disconnect device utilizing original single segment unmodified battery ground cable to connect/disconnect current flow at chassis connection site

Computer display terminal

Identification tag

Receptacle for a key-like device containing an embedded electronic circuit component with leads extending to the surface of the key to form contact areas thereon. The receptacle defines a keyway in which a plurality of contact pins are positioned and spaced to correspond to the spacing of the electrical contact areas on the key. The receptacle preferably includes a head protect sleeve which functions as a guard means for the contact pins therein. The receptacle is designed to be connected with a printed circuit board by means of staked contact pins which may be arranged in a variety of predetermined patterns on the circuit board facilitating electrical connection of the receptacle contact pins to a variety of standardized electrical connectors.

Receptacle design for use with electronic key-like device

Key-like portable information electronic devices and other electronic devices adapted to be inserted into mating electrical receptacles. The bodies of devices in their preferred embodiments are formed of plastic molded around a printed circuit substrate, the barrels of which, when positioned on edges of the board, are modified so as to function as electrical contacts.

Portable electronic information devices and method of manufacture

Guide arrangement for assuring predetermined orientation for electronic key relative to an electrical receptacle into which it is to be inserted.

Orientation guide arrangement for electronic key and receptacle

Electronic information key

An improved electronic key for use in combination with an electrical receptacle adapted to receive the key wherein switch contacts on the key are designed for making electrical contact with corresponding receptacle contacts when the key is turned in the receptacle to an 'on' position only after the other key contacts make electrical contact with the corresponding receptacle contacts. Conversely, the switch contacts are the first to break electrical contact when the key is turned past the 'on' position in either direction.

Electronic key

Receptacle for a key-like device containing an embedded micro-electronic circuit component with leads thereto extending to the surface of the key. The receptacle defines a keyway in which a plurality of contact heads spaced to correspond to the spacing of the leads on the key are positioned. The contact heads are supported by finger-like spring members which provide inwardly directed pressure against the contact heads when the key leads are brought into engagement with the contact heads. A flexible circuit surrounding the finger spring members and connected to the receptacle contact heads provides means for connecting the micro-electronic circuit in the key with a control circuit such as a computer.

Receptacle for electronic information key

This invention relates to improvements in the functional design of electrical key-like devices and electrical receptacles for use in combination therewith. Electronic circuitry systems, such as computers and other operating circuits, interface with the key-like devices through the receptacle. The keys contain a microelectronic circuit element, e.g., a microelectronic circuit chip or die, having an electrical lead or leads exposed along the length of the key for contacting electrical leads in the receptacle when the key is inserted therein and rotated to a 'locked' position. The keys are particularly designed to interface with a processor and program memory system, that is, a computer.

Microelectronic memory key with receptacle and systems therefor

This invention relates to electrical key-like devices, to electrical receptacles for use in combination therewith and to electronic circuitry systems, such as computers and other operating circuits, that interface with the key-like devices through the receptacle. The keys contain a microelectronic circuit element, eg., a microelectronic circuit chip or die, having an electrical lead or leads exposed along the length of the key for contacting electrical leads in the receptacle when the key is inserted therein and rotated to a 'locked' position. The keys are particularly designed to interface with a processor and program memory system, that is, a computer.

Growing community of inventors

Burnsville, MN, United States of America

William P Flies