Austin Star Detonator Company

Oakley Telecom, Lc

Other

Dyno Nobel Inc.

Thomas Allen Hoopes

Gimtong Teowee

Bryan E Papillon

Larry S Howe

Mark Ivan Jurras, Iii

Michael J Hayes

A Lindsay Wallace

Systems, methods, blasting machines and wireless bridge units are presented for wireless blasting for safe firing of detonators under control of a remote wireless master controller in which the blasting machine is connected by cabling to the wireless bridge unit and power to a firing circuit of the blasting machine is remotely controlled via the bridge unit. The bridge unit selectively provides first and second firing messages to the blasting machine contingent upon acknowledgment of safe receipt of the first firing message by the blasting machine, and the blasting machine fires the connected detonators only if the first and second firing messages are correctly received from the bridge unit. A wireless slave blasting machine is disclosed, including a wireless transceiver for communicating with a remote wireless master controller, which fires the connected detonators only if first and second firing messages are wirelessly received from the master controller.

Method and apparatus for wireless blasting

Method and apparatus for wireless blasting with first and second firing messages

An ignition circuit () includes: an igniter () having first () and second () terminals; a first diode () electrically connected in series with the igniter at the first terminal; a second diode () electrically connected in series with the igniter at the second terminal. The first and second diodes each have an anode terminal () and a cathode terminal (), wherein like terminals of the first and second diodes are electrically connected to the igniter, thereby defining proximal terminals and distal terminals. A capacitor () is electrically connected across the distal terminals and connectable in parallel with a series-connected energy source () and switch (). The energy source and a switch are electrically connectable across the distal terminals via test lead wires. Current flow through the igniter sufficient to ignite the igniter is prevented until an ignition voltage is applied to the distal terminals that is equal to or greater than the reverse breakdown voltage of the first diode or the second diode.

Detonator ignition protection and detection circuit

A system and method for suppressing ring signal pulses on a telephone line, the system comprises: (a) determining means for determining a duration and a frequency of the ring signal pulses, and (b) attenuating means, responsive to the duration and the frequency of the ring signal pulses, for attenuating the ring signal pulses. Attenuating the ring pulses includes limiting the voltage difference between TIP and RING lines during the ring pulses to suppress the ring signal or a portion of the ring signal on each telephone connected to the same line.

Unique ring caller ID

A system and method for altering an incoming ring signal to produce a selected ring signal on a telephone device. The incoming ring signal is accompanied by a caller ID packet and provided by a telephone utility provider responsive to a call made by a caller. The communication system includes a system console and at least one addressable extension module. The system controller and each addressable extension module are in communication with the telephone line. The system console includes (i) means for decoding the caller ID packet to determine the identity of the caller, (ii) a storage device for storing saved caller information including caller identities and corresponding ring control information, (iii) means for selecting ring control information from the saved caller information and the identity of the caller, and (iv) means for providing the ring control information to the telephone line. Each addressable extension module additionally communicates with a respective telephone device. Each addressable extension module includes (i) means for receiving the ring control information from the telephone line, (ii) means for detecting the incoming ring signal, (iii) means for determining a duration of the incoming ring signal, and (iv) means for selectively providing communication during the incoming ring signal between the first telephone device and the telephone line in accordance with the ring control information to produce the selected ring signal. Additionally, each addressable extension module includes means for redirecting an audio signal to the telephone line and means for redirecting the audio signal from the telephone line.

Console and extension telephone system

A microfilm recorder system includes a frame, a film supply canister mountable on the frame for holding a roll of microfilm, a film take-up canister insertable on and removable from the frame for receiving the film, and a film transport assembly for moving the film from the film supply canister to the film take-up canister. The film take-up canister includes a reel on which film is wound when the reel is rotated, and a driven mechanism which, when driven, causes the reel to rotate. A driving mechanism is mounted on the frame to automatically engage and drive the driven mechanism when the film take-up canister is inserted on the frame. The frame includes an exposure section located between the film supply canister and the film take-up canister through which film travels, a first pair of generally parallel, spaced-apart rails extending in a first direction from the exposure section, and a second pair of generally parallel, spaced-apart rails extending in a second direction, opposite the first direction, from the exposure section. Both the film supply canister and the film take-up canister include a pair of generally parallel tracks located on opposite sides of the canisters so that the tracks of the film supply canister may engage and slide along the first pair of rails when the canister is inserted therebetween, and so that the tracks on the film take-up canister can engage and slide along the second pair of rails when that canister is inserted therebetween.

Growing community of inventors

Sandy, UT, United States of America

Thomas Allen Hoopes