Michael H Oliver

US Patent:

D3174506, Jun 11, 1991

Filed:

May 18, 1989

Appl. No.:

7/353501

Inventors:

Tracy E. Crawford - Foster City CA
Rogelio Delgado - Rosston AR
Michael T. Oliver - Mineral Springs AR

Assignee:

Klipsch and Associates, Inc. - Hope AR

US Classification:

D14214

US Patent:

46870679, Aug 18, 1987

Filed:

May 1, 1986

Appl. No.:

6/858487

Inventors:

Richard D. Smith - Lakewood CA
Michael S. Oliver - Lafayette LA
Richard D. Crouse - Huntington Beach CA

Assignee:

Smith International, Inc. - Newport Beach CA

International Classification:

E21B 1018

US Classification:

175340

Abstract:

A three cone rock bit is disclosed having at least a pair of mini-extended nozzles extending from a dome portion of the bit. Two 120. degree. leg segments contain extended nozzles, a third 120. degree. segment is nozzleless. The mini-extended nozzles convert hydraulic pressure to kinetic fluid flow energy with a minimum of flow disturbance, thereby delivering a concentrated flow of fluid against the floor of the formation and across the cutting face of the bit, sweeping detritus past the nozzleless 120. degree. leg segment and up the borehole. A centerjet mini-extended nozzle may additionally be positioned in the rock bit dome to further enhance borehole penetration.

US Patent:

50002864, Mar 19, 1991

Filed:

Aug 15, 1989

Appl. No.:

7/394135

Inventors:

Tracy E. Crawford - Foster City CA
Rogelio Delgado - Rosston AR
Michael T. Oliver - Mineral Springs AR

Assignee:

Klipsch and Associates, Inc. - Hope AR

International Classification:

H05K 500

US Classification:

181145

Abstract:

A modular loudspeaker system of uniformly sized and shaped loudspeaker modules permits hanging of a plurality of the modules in a wide variety of desired configurations. Each module has a pair of side walls with recessed upper and lower marginal edge portions and an integrally formed reinforced connectable structure that spans between the recessed edge portions for reinforcement of the module across its side. When several modules are hung vertically, the vertically aligned reinforced connectable structures reinforce the system along its entire length. Three module types are disclosed, with one type adapted for removable mounting therein of a speaker horn via a quick release hub. Overall, the system provides optimum versatility in adapting to the acoustical requirements of a wide variety of performance venues.