Alan S Marshall

US Patent:

6664514, Dec 16, 2003

Filed:

Jul 10, 2000

Appl. No.:

09/612893

Inventors:

Alan E. Marshall - Merrimack NH

Assignee:

Saint-Gobain Ceramics Plastics, Inc. - Worcester MA

International Classification:

H05B 300

US Classification:

219267, 219551, 361264

Abstract:

Featured is a method for securing an ignition device to a support. The securing method includes disposing a shock mounting pad between the ignition device and the support, the shock mounting pad being configured so as to reduce external loads to the ignition device, more particularly to reduce external loads being applied in one of directions transverse to a long axis of a heating element of the ignition device and more specifically, to reduce external impact loads. The shock mounting pad is made of a material having a thickness and firmness so as to be capable of reducing external loads being applied in one of a horizontal or vertical direction with respect to a long axis of a heating element forming a part of the ignition device. In this way, the structure formed by the combination of the ignition device, shock mounting pad and the support is more resistant to applied external loads than a case in which the ignition device is secured without the shock mounting pad. Also featured are a method for improving the shock resistance of an ignition device being secured to a support, a shock mounting device to reduce communication of external loads to the ignition device and heat generating apparatuses embodying such methodologies.

US Patent:

50900250, Feb 18, 1992

Filed:

Jul 24, 1990

Appl. No.:

7/558197

Inventors:

Alan C. Marshall - Framingham MA
Stuart P. MacEachern - Uxbridge MA
Howard C. Salwen - Newtonville MA

Assignee:

Proteon, Inc. - Westboro MA

International Classification:

H04L 2560

US Classification:

375 4

Abstract:

An improved local area network node of the type described in ANSI/IEEE Standard 802. 5, including a receiver-demodulator having an input connectable to the ring and having a received data output and a received clock output, an elasticity buffer connected to the received data output, a modulator for modulating the output of the buffer in accordance with a signal at a clocking input of the modulator, and a phase-locked loop interposed between the received clock output of the demodulator and the clocking input of the modulator, the loop including a voltage-controlled oscillator, a phase detector and a filter connected for providing a control-voltage to the oscillator.

US Patent:

51329263, Jul 21, 1992

Filed:

Sep 21, 1990

Appl. No.:

7/586415

Inventors:

Stuart P. MacEachern - Uxbridge MA
Alan C. Marshall - Framingham MA
Howard C. Salwen - Newtonville MA

Assignee:

Proteon, Inc. - Westboro MA

International Classification:

G06G 702
H03H 730
H04L 700
H03D 324

US Classification:

364825

Abstract:

An improved local area network ring node of the type described in ANSI/IEEE Standard 802. 5, including a receiver having an input connectable to the ring, a phase-locked loop circuit for extracting a clock frequency from the receiver output and including a phase detector for generating a phase error signal, and a data demodulator connected for demodulating at the extracted clock frequency the data in the receiver output. The improvement lies in the provision of a filter for deriving a control signal from the outputs of the data demodulator and the phase detector and an adaptive equalizer for reducing the effect of jitter in signals applied to the receiver input from the network, the equalizer comprising a filter network including a voltage variable impedance so connected as to vary responsively to the control signal.

US Patent:

39507521, Apr 13, 1976

Filed:

Jun 1, 1973

Appl. No.:

5/366023

Inventors:

Harold P. Zitzow - Reading MA
Alan C. Marshall - Framingham MA

Assignee:

EPSCO, Incorporated - Westwood MA

International Classification:

G01S 130

US Classification:

343105R

Abstract:

In an Omega receiver a phase detection system operative on both rising and falling edges of a hard limited, received Omega signal to compensate for random noise and asymmetries in the hard limited signal.