Bernard M Loughlin

US Patent:

51093227, Apr 28, 1992

Filed:

Aug 30, 1991

Appl. No.:

7/753636

Inventors:

Bernard M. Loughlin - Sayville NY

International Classification:

F21V 3300

US Classification:

362109

Abstract:

A safety beacon acting as a portable and self contained strobe light is provided for use in fire fighting and rescue operations. The purpose of the safety beacon is to enhance security and minimize the disorientation caused by darkness, smoke, or fog in a fire fighting, rescue, or underwater operation. The safety beacon is composed of a heat, chemical, water, and impact resistant casing which is joined to a lexan covered xenon strobe light. The safety beacon is activated by an insulated switch which draws power from a nine volt battery kept within an insulated housing. The safety beacon may be instantly attached to a ferrous surface by means of a magnet, suspended on a garment or other cloth substance by means of a velcro pad, and pierced into and fixed on to drywall by means of a spike attachment. A knurled wedge design allows the safety beacon to hold doors open for firefighters or to be inserted into the ground to mark position for an aerial landing.

US Patent:

45891273, May 13, 1986

Filed:

Jun 5, 1978

Appl. No.:

5/912281

Inventors:

Bernard D. Loughlin - Centerport NY

Assignee:

Hazeltine Corporation - Commack NY

International Classification:

H04H 500

US Classification:

381 16

Abstract:

An improved transmitter for a compatible independent sideband (ISB) AM stereo system develops a phase modulated carrier where the modulation represents the stereo difference signal inverse modulated by the stereo sum signal in accordance with a selected modulation function. The phase modulated carrier then is amplitude modulated by the stereo sum signal. This simplified modulation scheme provides the second-harmonic sideband correction required to develop a true single sideband type signal wherein left and right stereo information are transmitted in separate lower and upper sidebands, which can be demodulated without distortion in ISB AM stereo receivers. Simplified receivers which use inverse modulation are also disclosed.

US Patent:

47665254, Aug 23, 1988

Filed:

Dec 16, 1987

Appl. No.:

7/133731

Inventors:

Bernard M. Loughlin - Sayville NY

International Classification:

F21L 700
E06C 534

US Classification:

362183

Abstract:

A ladder beacon is provided which will aid firefighting and rescue personnel in locating a ladder in adverse conditions such as darkness, smoke and fog. The ladder beacon is a small self contained strobe light which is affixed to the top rung of a ladder and which is automatically activated when the ladder is raised to a vertical position.

US Patent:

48872970, Dec 12, 1989

Filed:

Dec 1, 1986

Appl. No.:

6/936541

Inventors:

Bernard D. Loughlin - Centerport NY

Assignee:

Hazeltine Corporation - Greenlawn NY

International Classification:

H04H 500

US Classification:

381 15

Abstract:

Multi-system or "universal" AM stereo receivers are provided which require no switching of the receiver's stereo decoder circuitry regardless of which AM stereo system signal is being received. In accordance with one aspect of the invention, acceptable stereo sound is achieved for all AM stereo systems by introducing a selected amount of distortion correction in the L-R channel of the universal receiver and a selected phase difference between the L+R and L-R channels. In addition, perceived stereo separation in AM stereo and other stereo receivers is enhanced by also properly selecting the gain in the L-R channel in relation to the L+R channel.

US Patent:

44206585, Dec 13, 1983

Filed:

May 4, 1981

Appl. No.:

6/260645

Inventors:

Bernard D. Loughlin - Centerport NY

Assignee:

Hazeltine Corporation - Greenlawn NY

International Classification:

H04H 500

US Classification:

381 15

Abstract:

Multiple low frequency tones are employed for stereo indication in an AM stereo radio system. The tones are modulated on a carrier wave which is also multiplex modulated by stereo related audio signals. Detection of the presence of one of the tones in a received signal provides an indication of the possibility of stereo related modulation components in the received signal. Detection of the presence of both tones in the received signal provides confirmation that stereo related modulation components are in the received signal. In a preferred embodiment, 15 Hz and 30 Hz phase-related tones are used. A stereo receiver incorporates 15 Hz and 30 Hz phase detectors which form interrelated phase-locked loops with a 30 Hz reference oscillator. The presence of both tones in the proper phase relationship indicates reception from an AM radio station which is broadcasting in stereo.

US Patent:

45368856, Aug 20, 1985

Filed:

Dec 27, 1983

Appl. No.:

6/565303

Inventors:

Bernard D. Loughlin - Centerport NY

Assignee:

Hazeltine Corporation - Commack NY

International Classification:

H04H 500

US Classification:

381 15

Abstract:

In a receiver for composite amplitude and angle modulated signals and having a non-flat automatic gain control characteristic, there is provided apparatus for providing distortion correction to the quadrature component produced by the angular modulation in accordance with the amplitude modulation component. In accordance with the invention, the output of an amplitude demodulator is modified to remove the carrier signal level dependent magnitude multiplier and develop a modification signal which is used to inversely amplitude modulate the quadrature signal component to provide distortion correction over a range of carrier signal levels. Such inverse modulation can be provided before or after quadrature demodulation of the received signal.

US Patent:

48797570, Nov 7, 1989

Filed:

May 7, 1987

Appl. No.:

7/046754

Inventors:

Bernard D. Loughlin - Centerport NY

Assignee:

Hazeltine Corp. - Greenlawn NY

International Classification:

H04B 116

US Classification:

455182

Abstract:

In a superheterodyne receiver which employs a frequency synthesizer to generate local oscillator (LO) frequencies, there is provided apparatus which determines when an undesirable frequency relation exists, which may produce a condition known as a "tweet", and which adjusts the frequency of the LO signal so as to prevent, reduce or eliminate the tweet.

US Patent:

44792336, Oct 23, 1984

Filed:

Mar 3, 1982

Appl. No.:

6/354332

Inventors:

Bernard D. Loughlin - Centerport NY

Assignee:

Hazeltine Corporation - Greenlawn NY

International Classification:

H04H 500

US Classification:

381 15

Abstract:

In a receiver for composite amplitude and angle modulated signals and having a non-flat automatic gain control characteristic, there is provided apparatus for providing distortion correction to the quadrature component produced by the angular modulation in accordance with the amplitude modulation component. In accordance with the invention, the output of an amplitude demodulator is modified to remove the carrier signal level dependent magnitude multiplier and develop a modification signal which is used to inversely amplitude modulate the quadrature signal component to provide distortion correction over a range of carrier signal levels. Such inverse modulation can be provided before or after quadrature demodulation of the received signal.