Richard A Weisman Deceased2301 Graham Ave, Redondo Beach, CA 90278

6865282, Mar 8, 2005

May 1, 2003

10/428515

Richard L. Weisman - Pasadena CA, US

H04R025/00

381404, 381398, 381403, 381412

An electromagnetic transducer such as an audio speaker employs a slotted yoke and two suspension components enabling very large excursion relative to the size of the diaphragm which results in improved low frequency output. A first suspension component includes an inner ring, flexible springs, and an outer body. The flexible springs extend through the slots of the yoke and couple the inner ring to the outer body. The inner ring, outer body, and flexible springs of the first suspension component may be of monolithic construction or they may be distinct components coupled together. The inner ring couples to the bobbin of the diaphragm assembly, and the outer body couples to the outer cylindrical surface of the yoke or to a mounting ring which is coupled to the outer cylindrical surface of the yoke. A second suspension component, such as a surround, couples the diaphragm assembly and to the mounting ring. The mounting ring and the outer body of the first suspension component are keyed and dimensioned to provide correct positioning and alignment of the inner ring.

8077902, Dec 13, 2011

Aug 29, 2006

11/990465

Richard L. Weisman - Pasadena CA, US
Claude A. Vidal - Santa Barbara CA, US
Russ J. Redmond - Goleta CA, US
Michael Collinson - Goleta CA, US
Paul Kaluzniak - Simi Valley CA, US

Advanced Bionics AG - Zug

H04R 1/00

381404, 381424

A voice coil suspension system comprising a spider formed of flexible dielectric material defining a flexure portion configured to suspend a voice coil for axial displacement and an elongate connector portion for carrying flat electrical conductors for electrically connecting terminals of said voice coil to stationary electric contacts.

2011004, Feb 24, 2011

Aug 23, 2009

12/545857

Edward Ku - Yuen Long, HK
Richard Louis Weisman - Pasadena CA, US
Chun Hua Li - Jiangxi, CN

Plastoform Industries Ltd. - New Territories

H04R 1/00

381433

An audio loudspeaker with an internal magnet geometry motor having a slotted cylinder having closed ends, a pair of oppositely charged magnets sandwiching a top plate and disposed between the closed ends of the cylinder, and a diaphragm assembly having a bobbin with spokes which extend through the slots. Mechanically connecting to the voice coil radially through the cylinder enables the lower suspension component to be places much lower and farther from the upper suspension component, improving stability of the suspension. The closed ends of the motor provide extremely low magnetic reluctance for the magnetic circuits at the respective ends of the motor.

5386256, Jan 31, 1995

Apr 28, 1993

8/054765

Jeffrey E. Taylor - Chatsworth CA
Lane R. Stewart - La Poente CA
Thomas Tate - Valverde CA
Richard Weisman - Hollywood CA
Dana Wood - Los Angeles CA
LeRoy H. Reese - Burbank CA

Sony Dynamic Digital Sound, Inc. - Culver City CA

G03B 3102
G03B 2732
G03B 2708

352 27

An add-on module for a contact printer used to manufacture a motion picture. The module enables the printing of a digital optical soundtrack on motion picture film from a sound negative using a standard contact printing process. The module includes spaced apart guide rollers and a main roller. Unexposed film is placed in contact between the main roller and the sound negative. The module further includes a fiber optic light source positioned adjacent to the sound negative for exposing the film and forming the digital soundtrack. The digital soundtrack is formed on a portion of the positive print which includes an area between each of the sprocket holes. In addition, the digital soundtrack extends from each sprocket hole to the edge of the positive print on both sides of the print.

2015026, Sep 17, 2015

Mar 13, 2014

14/207645

Edward Ku - Tuen Mun, HK
Richard Louis WEISMAN - Pasadena CA, US

H04R 9/02
H04R 1/00

An electromagnetic loudspeaker transducer; where its voice coil bobbin has a fully circumferential geometry to provide increased mechanical strength. When the bobbin to be made with sheet metal and sheet metal deep drawn it further provides a stiffened construction by work hardened metal during the process. The full circumferential bobbin made with metal also serve as a one turn coil to short out the induced current from back electromotive force due to the voice coil moving under the magnetic field from the audio transducer's motor structure. The bobbin also allows a support feature for the transducer diaphragm to attach to and avoid leaving a dent mark on sheet metal diaphragms.