Michael E Shumate

US Patent:

40676536, Jan 10, 1978

Filed:

Aug 27, 1976

Appl. No.:

5/718266

Inventors:

James C. Administrator of the National Aeronautics and Space Fletcher
Michael S. Shumate - Pasadena CA

International Classification:

G01J 342

US Classification:

356204

Abstract:

A differential optoacoustic absorption detector employs two tapered cells in tandem or in parallel. When operating in tandem, two mirrors are used at one end remote from the source of the beam of light directed into one cell back through the other, and a lens to focus the light beam into the one cell at a principal focus half way between the reflecting mirror. Each cell is tapered to conform to the shape of the beam so that the volume of one is the same as for the other, and the volume of each receives maximum illumination. The axes of the cells are placed as close to each other as possible in order to connect a differential pressure detector to the cells with connecting passages of minimum length. An alternative arrangement employs a beam splitter and two lenses to operate the cells in parallel.

US Patent:

D2819651, Dec 31, 1985

Filed:

May 9, 1983

Appl. No.:

6/493072

Inventors:

Elliot A. Rudell - Torrance CA
Michael E. Shumate - Manhattan Beach CA
Joseph S. Cernansky - Gardena CA
Richard P. Kamrath - Redondo Beach CA

US Classification:

D12113

US Patent:

45001049, Feb 19, 1985

Filed:

Mar 16, 1983

Appl. No.:

6/475969

Inventors:

Elliot A. Rudell - Torrance CA
Michael E. Shumate - Manhattan Beach CA
Joseph S. Cernansky - Gardena CA

International Classification:

B62K 300

US Classification:

280289D

Abstract:

A child's combination toy comprising a bicycle, or tricycle, to the frame of which a seated doll is attached in front of the handlebars. The doll is seated with its hands grasping a miniature set of handlebars and its feet resting on a miniature set of pedals which are coupled to the cycle's front wheel by a gearing and friction-drive arrangement. The legs of the doll are flexible so that they are moved by means of the pedal action in correspondence with the action of the legs of the cycle's rider. The doll also turns in correspondence with the turning of the cycle's handlebars. The actions of the doll cause it to appear to be operating the cycle in conjunction with the actual operator.

US Patent:

D2819643, Dec 31, 1985

Filed:

May 9, 1983

Appl. No.:

6/493071

Inventors:

Elliot A. Rudell - Torrance CA
Michael E. Shumate - Manhattan Beach CA
Joseph S. Cernansky - Gardena CA
Richard P. Kamrath - Redondo Beach CA

US Classification:

D12111

US Patent:

42342589, Nov 18, 1980

Filed:

Aug 31, 1978

Appl. No.:

5/938297

Inventors:

Robert A. Administrator of the National Aeronautics and Space Frosch
Jack S. Margolis - Pasadena CA
Michael S. Shumate - Pasadena CA

International Classification:

G01N 2139

US Classification:

356437

Abstract:

An optoacoustic detector for gas analysis is implemented with Stark-effect cell modulation for switching a beam in and out of coincidence with a spectral line of a constituent gas in order to eliminate the heating effect of laser energy in the cell as a source of background noise. By using a multiline laser, and linearly sweeping the DC bias voltage while exciting the cell with a multiline laser, it is possible to obtain a spectrum from which to determine the combination of excited constituents and determine their concentrations in parts per million.

US Patent:

42014689, May 6, 1980

Filed:

Nov 3, 1978

Appl. No.:

5/957452

Inventors:

Jack S. Margolis - Pasadena CA
Daniel J. McCleese - Los Angeles CA
Michael S. Shumate - Pasadena CA
Clay H. Seaman - Glendale CA

Assignee:

California Institute of Technology - Pasadena CA

International Classification:

G01P 336

US Classification:

356 285

Abstract:

A method and apparatus for frequency modulating radiation, such as from a laser, for optoacoustic detectors, interferometers, heterodyne spectrometers, and similar devices using two oppositely reciprocating cat's-eye retroreflectors to Doppler modulate the radiation. By reciprocally moving both retroreflectors, the center of mass is maintained constant to permit smooth operation at many Hertz. By slightly offsetting the axis of one retroreflector relative to the other, multiple passes of a light beam may be achieved for greater Doppler shifts with the same reciprocating motion of the retroreflectors. A Doppler shift of 2(v/c). nu. occurs for each pass where v is the velocity of each retroreflector, c is the speed of light, and. nu. is the frequency of radiation.