Other

Liberty Dynamic, LLC

Hewlett-packard Company

Tandy Corporation

Sensor-tech Limited

Law Enforcement Technologies, Inc.

Marcus L Caldwell

Jeff Lathrop

William L Witt

Gary Ross Mitchell

Frederick L Caldwell

Gerald Patrick Sweetman

A digitally controlled hand-tossable explosive delivery receptacle comprises a ruggedized reusable compartment enclosing a digital circuit and a disposable cartridge holding one or more explosive chemical agents and a primer. The disposable cartridge is configured to be mounted to the ruggedized reusable cartridge, and a high-strength bulkhead incorporated into the reusable or disposable compartment that separates the digital circuit from the chemical agents. The reusable compartment is sufficiently ruggedized to withstand the ignition of the primer and the detonation of the chemical agents to be reused with one or more additional disposable cartridges. In one implementation, the delivery receptacle uses a commercial airbag initiator as the primer, which is arranged in relation to the one or more chemical agents so that when the initiator is activated, it generates a pressure wave that expels the one or more chemical agents from the grenade.

Chemical agent delivery receptacle with reusable digital control cartridge

A diversionary device has a housing having dimensions which are selected such that when the device is thrown or dropped, the device will come to rest only on one of its two primary sides. Each primary side has a circular dispersion port formed therethrough. The device includes means for blocking the first dispersion port if the device comes to rest on the first primary surface and for blocking the second dispersion port if the device comes to rest on the second primary surface. A firing mechanism is operable to discharge an ignitable composition out of a removable cartridge within the housing. The ignitable composition is discharged through the first dispersion port when the device rests on the second primary side and through the second dispersion port when the device rests on the first primary side. The composition then forms a cloud above the device and may be ignited.

Diversionary device with vertically deployed payload

A bridge assembly for a guitar having a bridge plate connected to an anchor plate by a single, horizontally positioned flat spring. The bridge plate has an opening that receives a portion of a sustain block. The sustain block has receptacles for receiving fine tuners and string clamps. Intonation screws extend through flange openings on the bridge plate and are adjustably connected to saddles. A locking nut is positioned on the neck of the guitar having a plurality of pieces connected by a tensioning bolt. At least one piece has one or more stabilizing flanges.

Locking nut for guitar

Guitar bridge apparatus

An improved ball pitching apparatus for a ball pitching machine of the type having an upper and lower wheel, said wheels rotating on substantially parallel shafts and having generally aligned and spaced rims carrying peripheral ball gripping bands; independent speed controlled drive motors; a ball feeder for feeding the ball between the spaced rims so that the ball will be gripped and accelerated in a trajectory tangential to the rims; a head frame carrying the wheels, drive motors, and ball feeder; and, a stand carrying the head frame. The improvements comprise: 1) a singular gripping band on one wheel and two spaced gripping bands on the other wheel so that the ball contacts and is gripped by three discrete points on its peripheral surface; 2) one of the wheels rotating on a shaft biased towards the other wheel so that the ball to be pitched will be gripped with a similar force regardless of diameter variations; and, 3) wheel drive DC motors internally positioned within the wheel so that the shafts and bearings in the motors are directly and radially loaded when the ball is gripped and accelerated. Internally driven wheels facilitate microprocessor and programmed memory control of a servo motors to control rotation of the head frame on the stand. This arrangement enables quick and precise adjustment to different pitching positions.

Ball pitching apparatus

Ball pitching apparatus&mdash;3

The present invention is a carbon monoxide or other toxic gas detector. The detector of the present invention detects the presence of carbon monoxide in an air sample by measuring the time required for the sensor circuitry to charge. Such a measurement technique eliminates the inaccuracies inherent in prior art detectors which measure the resistance of the sensor circuitry upon exposure to carbon monoxide. The detector of the present invention is controlled by a microprocessor which enables the detector to retain in memory air sample readings of carbon monoxide or other toxic gas. If the detector registers four consecutive readings which indicate the presence of carbon monoxide in an air sample in a concentration greater than or equal to about 100 ppm, then the alarm of the detector will be triggered, thereby alerting the user to a dangerous concentration of carbon monoxide gas in the air. Such a detection cycle enables the detector to detect not only high level, lethal concentrations of carbon monoxide in the air, but also, chronic, low level harmful concentrations of carbon monoxide in the air.

Toxic gas detector with a time measurement sensor

A moving coil, linear positioning transducer actuator suitable for optical recording and playback devices is constructed by forming the actuator frame, magnetic pole pieces and the magnetic core of the moving coil from a single piece of ferrous material and wherein the path of the moving coil and transducer are substantially collinear. The transducer is supported by parallel rails which are mounted to the frame.

Optical data storage system with unitary ferrous frame

A disk drive motor and spindle assembly includes a drive motor having a drive shaft defining an axis of rotation, a centering hub, and a flat spiral spring. The centering hub has a spherical disk-receiving surface section about a sphere center and a cavity extending therein from its lower edge. The spiral spring mounts the centering hub with respect to the drive shaft with the sphere center located on the axis of rotation and in the plane of the spring.

Growing community of inventors

Colorado Springs, CO, United States of America

Marcus L Caldwell