David I Lerner

US Patent:

46462015, Feb 24, 1987

Filed:

Dec 14, 1984

Appl. No.:

6/681936

Inventors:

David R. Lerner - Mount Vernon NY

International Classification:

H02B 110

US Classification:

361377

Abstract:

An ultrahighlight fluorescent light mounting system for filming, particularly in color. A head carries the fluorescent tubes and a removable light shield while the ballast is positioned in a container remote from the head. The head is set upon and swivable about an upper post, which is rotatably connected to a lower post, which in turn is set upon and swivable about a swivel piece extending from a standard stand. The head, light shield, first post, second post, stand, and ballast can all be dissembled from one another and placed in carrying cases.

US Patent:

55620981, Oct 8, 1996

Filed:

Mar 20, 1995

Appl. No.:

8/406713

Inventors:

David A. Lerner - Metuchen NJ

Assignee:

LifeSigns Corporation - Minneapolis MN

International Classification:

A61B 800

US Classification:

12866201

Abstract:

An ultrasonic blood flow velocimeter for measuring the velocity of blood flowing in an artery or vein beneath the skin of a patient, by insonating the tissue with ultrasonic energy, receiving doppler-shifted signals reflected by the blood and processing the signals to determine blood velocity. The signal processing and calculations result in an accurate measure of velocity which is independent of the angle between the probe and the blood flow. This gives more accurate results than other ultrasonic methods which approximate results because of angle dependency and the fact that in general this angle is unknown. The invention can also detect and discriminate between forward and reverse flows, even when they occur simultaneously, as in the case of insonating an artery and vein with opposite flows. The invention can also measure peak flow velocity, though efficient time domain processing of signals.

US Patent:

40053610, Jan 25, 1977

Filed:

Nov 4, 1975

Appl. No.:

5/628464

Inventors:

David S. Lerner - Fanwood NJ

Assignee:

Lockheed Electronics Co., Inc. - Plainfield NJ

International Classification:

G01R 3102

US Classification:

324 51

Abstract:

A circuit for monitoring the accuracy of the phase shift produced in an r. f. power distribution network in which the phase shift network includes diodes, means for sensing the conductive state of the terminating diodes, and structure for comparing the state of the diodes against a desired condition to provide a warning indication in the event the diodes are not in the proper condition to provide the desired phase shift.

US Patent:

46330097, Dec 30, 1986

Filed:

Jun 18, 1985

Appl. No.:

6/745894

Inventors:

David I. Lerner - Teaneck NJ

Assignee:

Frizsche Dodge & Olcott Inc. - New York NY

International Classification:

C07C10154

US Classification:

560 19

Abstract:

Methyl N-methylanthranilate is prepared by reductive alkylation of methylanthranilate with formaldehyde and hydrogen in the presence of a hydrogenation catalyst and an acid catalyst.

US Patent:

43334113, Jun 8, 1982

Filed:

Jul 15, 1981

Appl. No.:

6/283403

Inventors:

David A. Lerner - Flushing NY

Assignee:

The Singer Company - Stamford CT

International Classification:

D05B 4500
D05B 5900

US Classification:

112278

Abstract:

A bobbin thread level detection and display arrangement for a sewing machine includes an array of light emitting diodes which are activated to convey to the sewing machine operator an indication of the quantity of thread left of the bobbin. To control the light emitting diodes, an arrangement utilizing a light source and a phototransistor is arranged proximate the bobbin. The circuitry for controlling the activation of the light emitting diodes also provides for a "fading in" of the individual light emitting diodes to provide a display in the nature of a bar graph.

US Patent:

53071760, Apr 26, 1994

Filed:

Dec 1, 1992

Appl. No.:

7/983891

Inventors:

Mark Dweck - Great Neck NY
David Lerner - New York NY

International Classification:

A04N 100

US Classification:

358403

Abstract:

A stand alone add on system and apparatus for storing and retrieving duplicate facsimile information capable of working in conjunction with a simple facsimile machine. The duplicate facsimile information can be stored in memory, displayed on a screen or be reproduced in multiple fashion.

US Patent:

40053792, Jan 25, 1977

Filed:

Nov 4, 1975

Appl. No.:

5/628469

Inventors:

David S. Lerner - Fanwood NJ

Assignee:

Lockheed Electronics Co., Inc. - Plainfield NJ

International Classification:

H01P 512
H01P 706

US Classification:

333 6

Abstract:

An r. f. power distribution network or scanner in which a TEM mode and a pair of selectively phase-shifted TE. sub. 11 modes are derived and applied to input ports of a cavity resonator to produce a desired r. f. power distribution at a plurality of output ports. The resonator is in the form of a generally cylindrical member in which the output ports are arranged circumferentially about the periphery and axially spaced from the TE. sub. 11 mode input ports. The latter are arranged symmetrically about the TEM mode input port.