Gabriel Miller, 76Hartford, CT

4613279, Sep 23, 1986

Mar 22, 1984

6/592325

Dean R. Corren - New York NY
Gabriel Miller - New York NY

Riverside Energy Technology, Inc. - New York NY

F03B 312

415 2A

A kinetic hydro energy conversion system having a turbine for mounting in a hydro energy source, wherein the turbine comprises a rotor having conformal blades and a screen for horizontally deflecting debris from the blades.

5444777, Aug 22, 1995

Dec 28, 1993

8/174117

Joseph H. Condon - Summit NJ
Gabriel L. Miller - Westfield NJ

AT&T Corp. - Murray Hill NJ

H04M 1900

379413

A battery feed circuit for supplying DC power to a telephone loop and for coupling signals to and from said loop is disclosed. A differential amplifier having its inputs connected by way of a twisted resistive bridge to the telephone loop provides a voltage at its output which includes the signal from said telephone loop and has a DC component which is proportional to the DC current flowing in the loop. Signals are coupled to the telephone loop by a low-inductance three-winding transformer which has two of its windings connected in series with an external power supply and the twisted bridge in order to supply current to the telephone loop. A second differential amplifier is connected in different ways in several embodiments between the output of the first differential amplifier and the third winding of the transformer to provide an automatic flux-cancelling action in order to avoid saturation of the transformer core. Larger gain is achieved in the first differential amplifier by clamping its DC output to zero through use of an integrator circuit connected between the output and one of the inputs of the first differential amplifier. In one of the embodiments, power is supplied to the telephone loop by a constant current source.

5245796, Sep 21, 1993

Apr 2, 1992

7/862044

Gabriel L. Miller - Westfield NJ
Eric R. Wagner - South Plainfield NJ

AT&T Bell Laboratories - Murray Hill NJ

B24B 53007

51283R

Slurry in a slurry polisher is ultrasonically agitated during polishing to dislodge embedded debris and grit from the polishing pad and thereby improve the uniformity of material removal, lengthen the life of the pad and avoid scratches and defects on the surface being polished. The method is particularly useful for applications in which slurry polishing is used for planarizing deposited layers on semiconductor wafers where non-uniformities caused by such embedded material can affect process yields. Apparatus is disclosed for applying ultrasonic energy to the slurry so that such energy is focussed on the pad.

4190799, Feb 26, 1980

Aug 21, 1978

5/935518

Gabriel L. Miller - Westfield NJ
David A. H. Robinson - Summit NJ

Bell Telephone Laboratories, Incorporated - Murray Hill NJ

G01R 3300

324239

The magnitude and sign of the Hall angle of the material of a wafer (13) are measured by a combined capacitive and inductive coupling technique which does not require physically contacting the wafer (13). Contacting methods in common use introduce surface damage or contamination which may reduce the yield of microelectronic circuits on semiconductor wafers and normally in addition require special sample geometries. In this technique an rf signal is applied to a pair of concentric planar electrodes (11,12) adjacent to the wafer (13), thus capacitively coupling a radial rf current into the wafer. A magnetic field applied perpendicular to the wafer produces a circular component of rf current because of the Hall effect. This circular rf current produces an axial rf magnetic field which couples to a pickup coil (15). The pickup signal is amplified and detected to produce an output signal related to the sign and magnitude of the Hall angle of the wafer material.

4829172, May 9, 1989

Jul 20, 1987

7/075912

Gabriel L. Miller - Westfield NJ

American Telephone and Telegraph Company AT&T Bell Laboratories - Murray Hill NJ

G01J 132

250205

There is disclosed an optical ranging system adapted for use with widely varying return signal levels. Automatic signal level control is achieved in two parts, a passive optical part and an active electronic AGC part. The optical part is based on the coaxial arrangement of transmitting and receiving elements in which the shielded transmitting element is mounted in front of the receiving element, which includes Fresnel lens which comprises a plastic casting. The electronic AGC portion of the system includes means for providing a voltage drive (with low internal impedance) for the final AGC transistor when it would tend to be slow, so little phase shift in the control results from changes in the signal levels. Thereby, the determination of distance (the ranging) by phase shift measurement is kept reliable as signal level changes. This optical ranging system is especially adapted for mounting on autonomously guided vehicles (robot carts), which are important for material handling and inventory control in manufacturing systems in factory environments.

4893071, Jan 9, 1990

May 24, 1988

7/197800

Gabriel L. Miller - Westfield NJ

American Telephone and Telegraph Company, AT&T Bell Laboratories - Murray Hill NJ

G01B 730
G08C 1910

324660

A capacitance based, high resolution, incrementally encoding, position measuring system employs an array of identical replicated electrodes that are driven in unison from an RF source and mounted in proximity to a patterned monolithic reference ground plane of arbitrary size. Motion of such position-sensing arrays is monitored by measuring both the sums and the differences of the electrode displacement currents in such a way as to provide incrementally encoding position signals in both one and two dimensions together with a continuous measurement of the height of the sensor array above the patterned ground plane. In various modifications, the system and methods are applied both to one dimensional linear, as well as to two dimensional planar and two dimensional cylindrical motion measurement and control. Various techniques for eliminating the effects of spurious capacitances are also disclosed.

5517012, May 14, 1996

Sep 8, 1994

8/303248

Robert A. Boie - Westfield NJ
Gabriel L. Miller - Westfield NJ

AT&T Corp. - Murray Hill NJ

G06K 710

235462

A circuit that prevents optical screening systems from being pinned in an inoperative state under certain light conditions. The invention accomplishes this by using a circuit comprising a photodetector for converting scattered light from a visual code (e. g. , universal product code) into current and a current limiting circuit coupled to the photodetector for limiting the current capable of passing through the photodetector.

4958115, Sep 18, 1990

Nov 28, 1988

7/276751

Gabriel L. Miller - Westfield NJ

AT&T Bell Laboratories - Murray Hill NJ

H02K 4100

318662

There are disclosed both one and two-dimensional, high resolution, brushless DC servomotors that are linear, rotary, planar and cylindrical in nature. All of these employ a capacitive method for deriving the required position and motor commutation information. In suitable circumstances, particularly two-dimensional planar motors on air bearings, the method allows the use of the motor ferromagnetic cores themselves as the capacitive position sensing elements. This leads to a particularly simple and compact type of sevomotor design. In addition, since such motors can move at high speed, there are also disclosed two transformer coupled methods for handling the current drive to the motor windings. Both methods are simple, energy efficient, applicable to motors of any number of phases, and in addition, handle motor direction reversals automatically.