Richard H Plourde

US Patent:

20020046868, Apr 25, 2002

Filed:

Apr 29, 1998

Appl. No.:

09/069511

Inventors:

JOHN F. BORG - FITCHBURG MA, US
MICHAEL D. MADDIX - PEPPERELL MA, US
RICHARD H. PLOURDE JR - WESTMINSTER MA, US

International Classification:

H01B011/02

US Classification:

174/11300R

Abstract:

Disclosed is a coaxial cable bundle interconnecting a base and display in a notebook computer. The cable bundle includes outer cable layers surrounding a bundle of multiple cables. Each of the multiple cables includes a center conductor that is a 40 AWG wire surrounded by a dielectric medium. On top of the dielectric medium is a twisted served shield helically wrapped around the dielectric medium and the center core conductor.

US Patent:

20020058435, May 16, 2002

Filed:

Oct 15, 2001

Appl. No.:

09/977879

Inventors:

Robert Williams - Chelmsford MA, US
Richard Plourde - Westminster MA, US

International Classification:

H01R003/00

US Classification:

439/165000

Abstract:

A high voltage electrical connection between a base unit and a panel display in a portable computer wherein the base unit and the panel display are pivotably secured to each other about a hinge axis, includes a flexible high voltage electrical conductor extending from the base unit to the panel display. A portion of the electrical conductor extends along the hinge axis such that pivoting of the panel display relative to the base unit causes said portion of the flexible conductor to twist about the hinge axis rather than actively bend.

US Patent:

42146453, Jul 29, 1980

Filed:

Nov 9, 1978

Appl. No.:

5/959348

Inventors:

Richard G. Plourde - Ashland MA

Assignee:

Avid Corporation - East Providence RI

International Classification:

G10K 1100
H05K 500

US Classification:

181148

Abstract:

A loudspeaker having a totally integrated acoustic system which reduces unwanted cabinet diffraction of the sound waves to minimum; resulting in maximum sound wave dispersion with directional accuracy.

US Patent:

59752360, Nov 2, 1999

Filed:

Jan 8, 1998

Appl. No.:

9/004493

Inventors:

Shuji Yamamoto - Framingham MA
Richard G. Plourde - Nashua NH

International Classification:

H05K 500

US Classification:

181156

Abstract:

A speaker assembly comprising an elongated unitary member having a first end and a second end. The elongated member is formed into a generally box-shaped configuration having an open top, an open bottom and an internal box cavity. The first and second ends of the elongated member are separately positioned within the internal box cavity to form first and second internal sidewalls, respectively. First and second internal sidewalls define a sound path therebetween which is in communication with the internal box volume and an external portion of the elongated member. A first speaker is disposed in the first internal sidewall and a second speaker is disposed in the second internal sidewall, with first and second speakers facing directly into the sound path. A top panel is mounted on the elongated member over the open top and a bottom panel is mounted on the elongated member under the open bottom. In use, first and second speakers produce directly radiated and resonantly radiated sound waves which propagate out from the speaker assembly through the sound path.

US Patent:

59090154, Jun 1, 1999

Filed:

Mar 26, 1998

Appl. No.:

9/048446

Inventors:

Shuji Yamamoto - Framingham MA
Richard G. Plourde - Nashua NH

International Classification:

H05K 500

US Classification:

181156

Abstract:

A self-cooling loudspeaker comprises a speaker frame, a diaphragm connected to the speaker frame, a voice coil connected to the diaphragm and a permanent magnet assembly having a central opening. The permanent magnet assembly comprises a permanent magnet disposed between a top plate and a bottom plate. A pole piece is disposed co-axially within the central opening of the permanent magnet assembly to form an air gap between the pole piece and the permanent magnetic assembly into which the voice coil is disposed. In one embodiment of the present invention, the top plate is stamped to form a plurality of intake air paths in communication with the air gap and a plurality of outtake air paths in communication with the air gap, the plurality of intake air paths having a decreasing cross-sectional area towards the central opening of the permanent magnet assembly, and the plurality of outtake air paths having an increasing cross-sectional area towards the central opening of the permanent magnet assembly. In use, the diaphragm moves linearly to produce sound, the linear movement of the diaphragm creating a unidirectional flow of air through the plurality of intake and outtake air paths. In a second embodiment of the present invention, the bottom plate is also stamped to form additional intake air paths in communication with the air gap and additional outtake air paths in communication with the air gap.

US Patent:

56950683, Dec 9, 1997

Filed:

Feb 26, 1996

Appl. No.:

8/624678

Inventors:

Robert Allison Hart - Gardner MA
Richard Harry Plourde - Gardner MA

Assignee:

Digital Equipment Corporation - Maynard MA

International Classification:

B65D 8530
B65D 4500

US Classification:

206725

Abstract:

Disclosed is a containment system for shipping and handling probe card circuit boards. The containment system features a base member equipped with a recessed seating shelf for receiving and supporting the probe card, and a set of fasteners to hold the probe card securely in place. The base also has a second, upper-level, seating shelf to support a cover, and a second set of fasteners to hold the cover in position to seal the base and further secure the probe card in place.

US Patent:

RE372234, Jun 12, 2001

Filed:

May 10, 1999

Appl. No.:

9/309257

Inventors:

Amar G. Bose - Wayland MA
Richard G. Plourde - Ashland MA

Assignee:

Bose Corporation - Framingham MA

International Classification:

H03G 900

US Classification:

381102

Abstract:

An automatic dynamic equalization circuit has a potentiometer having a tap shunted by an active resonator circuit including a capacitor shunted by an active circuit presenting a high Q inductive reactance that is resonant at substantially 50 Hz and provides essentially no boost in the middle range of frequencies above 150 Hz with roll-off below about 45 Hz.

US Patent:

44908431, Dec 25, 1984

Filed:

Jun 14, 1982

Appl. No.:

6/388097

Inventors:

Amar G. Bose - Wayland MA
Richard G. Plourde - Ashland MA

Assignee:

Bose Corporation - Framingham MA

International Classification:

H03G 914

US Classification:

381102

Abstract:

An automatic dynamic equalization circuit has a potentiometer having a tap shunted by an active resonator circuit including a capacitor shunted by an active circuit presenting a high Q inductive reactance that is resonant at substantially 50 Hz and provides essentially no boost in the middle range of frequencies above 150 Hz with roll-off below about 45 Hz.