Kenneth T Marshall

US Patent:

55070582, Apr 16, 1996

Filed:

Jan 13, 1995

Appl. No.:

8/372570

Inventors:

Don S. Minami - Monte Soreno CA
Michael J. Shawver - Castro Valley CA
Thomas P. Jensen - Boise ID
Lawrence G. Shubert - San Francisco CA
Kenneth N. Marshall - Novato CA

Assignee:

H-Tech, Inc. - Wilmington DE

International Classification:

F04H 416

US Classification:

15 17

Abstract:

An apparatus for automatically cleaning submerged surfaces, such as the bottom and side walls of a swimming pool. In a preferred embodiment, the apparatus includes onboard sensors, and an onboard processor (preferably, a microprocessor) which controls operation of the apparatus in response to status information supplied from the sensors. Preferably, the apparatus has an onboard watertight battery and an adjustable inlet nozzle size, and includes left and right track treads which are controllable to cause the apparatus to turn or rotate (clockwise or counterclockwise), or translate in a forward or reverse direction, on a horizontal or vertically inclined submerged surface. A transmission assembly is provided for each track tread, including a cam wheel and a cam follower connected thereto within a sealed control assembly, and a shift link extending through a seal in the control assembly. Each shift link has an end connected to one of the cam followers and another end connected to a gear assembly, for shifting the gear assembly into a forward or a reverse gear. The apparatus preferably includes Hall effect transducers (with associated permanent magnets) and a microprocessor mounted within a sealed control assembly.

US Patent:

51054965, Apr 21, 1992

Filed:

Oct 18, 1990

Appl. No.:

7/600005

Inventors:

Joseph S. Gray - San Francisco CA
Kenneth N. Marshall - Novato CA

Assignee:

Arneson Products, Inc. - Fairfield CA

International Classification:

E04H 320

US Classification:

15 17

Abstract:

A suction cleaning device which is used for cleaning a swimming pool includes a removable door to improve access to the housing interior. The suction cleaning device is of the type having a primary and a secondary fluid flow path. The primary flow path has a primary turbine positioned in it for driving the device. The steering mechanism is of the type which has two secondary turbines which work together and comprise the secondary flow paths. The secondary fluid outlets, from the secondary flow paths are located near the primary turbine such that the secondary flow path joins the primary flow path. Access to the primary turbine is necessary to remove larger pieces of debris. A removable door having an opening aligned with the primary fluid inlet provides for access to the primary turbine. A screen integral with the removable door is preferably provided to prevent the entry of back wash debris into the lower secondary flow path. Screen guides provide for ease of replacement of the removable door.

US Patent:

D3305821, Oct 27, 1992

Filed:

Oct 19, 1989

Appl. No.:

7/424149

Inventors:

Alexander A. Gefter - San Francisco CA
Kenneth N. Marshall - Novato CA

Assignee:

Arneson Products, Inc. - Fairfield CA

US Classification:

D23210

US Patent:

49884379, Jan 29, 1991

Filed:

Oct 19, 1989

Appl. No.:

7/423963

Inventors:

Alexander A. Gefter - San Francisco CA
Kenneth N. Marshall - Novato CA

Assignee:

Arneson Products, Inc. - Corte Madera CA

International Classification:

B01D 3502

US Classification:

210237

Abstract:

An in-line leaf trap (100) is disclosed having a housing defined by a main body (112) and a separable lid (114). A filter (116, 118) is provided in the leaf trap for gathering debris. A locking ring (124) is provided having an inner threaded region (126) engagable with threads provided on the main body of the housing to seal the housing. The locking ring (124) includes a plurality of spokes (128) extending between the ring and central cylindrical yoke (130). The spokes are provided to facilitate rotation of the locking ring with one hand. In the preferred embodiment, a handle (190) is provided on the main body.

US Patent:

D3287785, Aug 18, 1992

Filed:

Sep 26, 1990

Appl. No.:

7/588668

Inventors:

Alexander A. Gefter - San Francisco CA
Kenneth N. Marshall - Novato CA

Assignee:

Arneson Products, Inc. - Fairfield CA

US Classification:

D23210

US Patent:

20140220516, Aug 7, 2014

Filed:

Mar 17, 2013

Appl. No.:

13/845011

Inventors:

Kenneth Rapp Marshall - Kentfield CA, US
Edmond Trey Dempsey - Dallas TX, US
Charlie Robert Collins - Nashville TN, US
Elizabeth Marie Turner - San Jose CA, US

Assignee:

FoodCare Inc. - Louisville KY

International Classification:

G09B 19/00

US Classification:

434127

Abstract:

A nutritional insight recommendation system using map-reduce software to calculate increasingly large user base and food items to provide real-time updates on nutritional guidelines. The system provides a universal system that use and share data among end users, nutritionists and dieticians, food service providers (such as restaurants) and manufacturers, and health providers and government entities.