Reed H Grundy

US Patent:

39809706, Sep 14, 1976

Filed:

Feb 10, 1975

Appl. No.:

5/548424

Inventors:

Reed H. Grundy - Murrysville PA

Assignee:

Westinghouse Air Brake Company - Swissvale PA

International Classification:

H03K 326

US Classification:

331108D

Abstract:

This disclosure relates to a solid-state voltage controlled oscillating circuit arrangement employing a differential type of integrated circuit operational amplifier and a transistorized output amplifier. The operational amplifier includes an inverting input coupled to a source of reference potential and a noninverting input coupled to an input signal source. The operational amplifier is provided with hysteresis for causing a dead band zone to occur until the signal on the noninverting input exceeds a predetermined value so that the operational amplifier toggles and produces output signal pulses having a frequency which is proportional to the amplitude of the input signal applied to the noninverting input. The output signal pulses are amplified by a transistorized output amplifier.

US Patent:

40442942, Aug 23, 1977

Filed:

Nov 25, 1974

Appl. No.:

5/526514

Inventors:

Reed H. Grundy - Murrysville PA

Assignee:

Westinghouse Air Brake Company - Swissvale PA

International Classification:

H02M 3335

US Classification:

363 25

Abstract:

This disclosure relates to a converter-regulator circuit which has high immunity to transient voltages and which employs a feedback controlled operational amplifier at the input end for controlling the conductive condition of an intermediate transistorized inverter which supplies feedback signals from the output end of a bridge rectifier to provide a regulated d. c. output voltage.

US Patent:

43688624, Jan 18, 1983

Filed:

Dec 22, 1980

Appl. No.:

6/219282

Inventors:

Reed H. Grundy - Murrysville PA

Assignee:

American Standard Inc. - Swissvale PA

International Classification:

B61L 116
B61L 2100

US Classification:

246 28R

Abstract:

A fail-safe magnetic sensing arrangement including a first and a second object relatively movable in relationship to each other. The first object includes a magnetic structure having a permanent magnet and a pair of pole pieces to develop a magnetic field. The second object includes an a. c. oscillator which is coupled to an amplifier by a saturable reactor transformer and the amplifier feeds a negative d. c. maker which normally energizes a relay except when the saturable reactor transformer is saturated by the magnetic structure which signifies that the second object is in the vicinity of the first object.

US Patent:

47437499, May 10, 1988

Filed:

Aug 25, 1986

Appl. No.:

6/899568

Inventors:

Reed H. Grundy - Murrysville PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

G01J 132

US Classification:

250205

Abstract:

A circuit is described which can be used to record rapidly occurring faults in a slowly reacting circuit which is self compensating so that the photoelectric light emitters used in the circuit have their flux maintained constant.

US Patent:

49254740, May 15, 1990

Filed:

Oct 23, 1989

Appl. No.:

7/425145

Inventors:

Reed H. Grundy - Murrysville PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C03B 3707
C03B 3712
C03C 2502

US Classification:

65 29

Abstract:

A method and apparatus constructed to measure the fluid present in a multifilament or fiber strand moving at high speed is described and involves conductive contact points along the strand path which contact the strand and generate signals. The signals which are conductance measurements are synchronously demodulated to produce a signal representing the volume of fluid in the strand.

US Patent:

47387009, Apr 19, 1988

Filed:

Dec 12, 1986

Appl. No.:

6/941236

Inventors:

Reed H. Grundy - Murrysville PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C03B 3707
C03B 3709

US Classification:

65 1

Abstract:

An apparatus for more accurately measuring the temperature of a fiber glass forming bushing is described which includes the placing of sidewall and bottom thermocouples in locations on the bushing so that electrical signals representing noise are eliminated or reduced significantly.

US Patent:

40401219, Aug 2, 1977

Filed:

May 27, 1975

Appl. No.:

5/581223

Inventors:

Reed H. Grundy - Murrysville PA

Assignee:

Westinghouse Air Brake Company - Swissvale PA

International Classification:

H05K 500

US Classification:

361409

Abstract:

The external lead from a critical circuit element in a circuit component of a larger apparatus is connected to a first terminal or connector pad on a printed circuit board and at a more distant point on the lead to a second connector pad. The connection to the next element of that component is made from the second pad. Any component output to the next circuit component is connected to the first pad. Thus, any high resistance in a poor solder joint appears on the safe side of the first pad connections, that is, in the circuit connections to the next element or in the output circuit.

US Patent:

45466564, Oct 15, 1985

Filed:

Dec 14, 1983

Appl. No.:

6/561612

Inventors:

Reed H. Grundy - Murrysville PA
James W. Koewing - Bethel Park PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

G01L 510

US Classification:

7386248

Abstract:

The tension of filamentary material under tension in a process can be measured with improved accuracy. The measurement is effected by the tension measuring device having an elongated, externally insulated housing which substantially surrounds and encompasses a solid, continuous beam cantilever-mounted coaxially with the housing. The beam extends beyond the housing through an opening at the other end of the housing from its mounting to an engagement means for the filamentary material. The beam has at its distal end within the housing two or more target means located in a relationship to each other along different axes in the same plane where the target means are in sensing engagement with a sensing means which extend into the housing from a point of attachment on the housing. The opening of the housing is substantially covered by a shield through which the beam passes and to which there is mounted a strand contacting means. The housing has a gas supply means supplying gas from a source into the housing to move freely and exit through the opening between the shield means and the housing.