1
Barry N Wilkinson, Barrie J Holst: Audio-tactile pedestrian push button signalling system. Amalgamated Wireless, Leydig Voit & Mayer, July 25, 1989: US04851836 (9 worldwide citation)

An audio-tactile pedestrian signalling system for use in conjunction with traffic control signal installation having a transducer (16) providing audio and tactile signals by means of signal generator (11, 12, 13, 14). The transducer acts as a microphone to provide a feedback signal to an automatic g ...


2
Stein Calvin Jonathan: Optical fibre modem. Amalgamated Wireless Australas, January 15, 1986: GB2161665-A (8 worldwide citation)

An optical fibre modem comprises a light emitting diode transmitter (11) and a photodiode receiver (12) both energized by a power supply (13-20) arranged to draw required power solely from the electrical data transmit line. The photodiode in the receiver (12) is connected with substantially zero bia ...


3
Robert Leigh Barnett: Radio receiver protection arrangement. Amalgamated Wireless, Weingarten Maxham & Schurgin, January 6, 1976: US03931577 (7 worldwide citation)

A receiver protection arrangement in which a voltage dependent on aerial voltage and a voltage dependent on aerial current are aggregated and applied to means responsive to a predetermined aggregate level to effectively short circuit the aerial lead. Additional means may be provided to dissipate ene ...


4
Waszczuk Jan, Ziolkowski Tony: Telephone handpiece housing. Amalgamated Wireless Australas, June 29, 1988: GB2199213-A (5 worldwide citation)

A two-part telephone handpiece housing has co-operating snap fitting formations (4, 20, 24) on co-operative parts (1, 21) to fasten the parts together. Co-operating alignment formations (5, 6, 25, 26) serve to align the parts as they are brought together to engage the snap fitting. The alignment for ...


5
Hole Godfrey W: System responsive to change of phase between two electrical waves. Amalgamated Wireless, June 1, 1971: US3582780 (5 worldwide citation)

A phase measuring and monitoring circuit adapted to measure the phase difference between a reference signal and a monitored signal having a counter switchable to either an add or substract mode, the input to which is a sequence of measured pulses controlled by a filter and zero-crossing detector, th ...


6
Lin Paul: Blending function and blending function generator. Amalgamated Wireless, Browne Beveridge DeGrandi & Kline, July 22, 1975: US3896444 (5 worldwide citation)

A blending function generator for use in the electronic commutation of a ring of antenna elements in doppler omni-range (DVOR) systems. The blending function comprises a first lobe flanked by second and third lobes, the first lobe consisting of a cosine lobe having a period of 2T seconds where T= Ym ...


7
Improvements in or relating to mechanical extractor-engager devices for use with rack-mountable box-like electric units. Amalgamated Wireless Australas, August 14, 1957: GB781145-A (4 worldwide citation)

781,145. Releasable fastenings. AMALGAMATED WIRELESS (AUSTRALASIA) Ltd. Nov. 24, 1955 [Dec. 13, 19541, No. 33705/55. Class 44 [Also in Group XXXVI] A device, particularly for aircraft electrical systems, for detaching or engaging a coupling (not shown) on a unit 10 from a complementary coupling (not ...


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Brian Robert Johnson: Doppler VOR beacons. Amalgamated Wireless, Beveridge DeGrandi Kline & Lunsford, December 21, 1976: US03999187 (3 worldwide citation)

A Doppler VOR beacon comprising a central antenna modulated with a reference wave and a ring of omnidirectional antennas radiating sidebands of a sub-carrier amplitude modulation of the carrier commutated around the ring of antennas to simulate a rotating source, in which the central antenna in comp ...


10
Waszczuk Jan, Boskovitz Tibor: Improved membrane keyboard. Amalgamated Wireless Australas, October 5, 1988: GB2202991-A (2 worldwide citation)

A membrane keypad is disclosed having a "collapse action" operation to provide tactile feedback. The keypad has a rigid substrate (5) with a number of depressions therein associated with each pad region. A cup-shaped flexible membrane portion (11) is positioned within each depression and extends bet ...