Ronald J Hill

US Patent:

6958118, Oct 25, 2005

Filed:

Aug 27, 2002

Appl. No.:

10/229680

Inventors:

Ronald G. Hill - Chandler AZ, US
John Johnson - Tempe AZ, US
Michael Wheat - Tempe AZ, US

Assignee:

MAAX, Inc. - Montreal

International Classification:

B01D036/02

US Classification:

210108, 210138, 210169, 210332, 21033301, 210411, 2101951

Abstract:

A self-cleaning water filtration system includes a pre-filter to filter oils and relatively medium sized particles in a water flow, a multi-stage filter to purify and provide a second level of filtration to the water flow, and a self-cleaning filter to provide a third level of filtration to the water flow. Water flow through the filter media of the self-cleaning filter is redirected to flush waste to a containment-tank filter. The self-cleaning filter has a purge output, which may spray the pre-filter to substantially remove particles from the pre-filter for collection in the containment tank. The multi-stage filter may have at least two layers of filter media. The pre-filter may be disposable and comprised of a mineral sanitizer positioned between two layers of an oil absorbing fabric.

US Patent:

20080288945, Nov 20, 2008

Filed:

Jun 25, 2007

Appl. No.:

11/767682

Inventors:

Kwan L. Tong - Yorba Linda CA, US
Manfred A. Newhart - Long Beach CA, US
Cathy A. Schmidt - Laguna Niguel CA, US
Steve W. Lee - Tustin CA, US
Ronald Paul Hill - Santa Rosa CA, US

Assignee:

Boeing Company, a corporation of the State of Delaware - Chicago IL

International Classification:

G06F 9/46

US Classification:

718103

Abstract:

A method for analyzing a program having a budget, an implementation schedule and a deployment plan includes: (a) in no particular order: (1) providing a digital representation of the budget including first entries; (2) providing a digital representation of the schedule including second entries having a first relation with the first entries; and (3) providing a digital representation of the deployment plan including third entries having at least one second relation with at least one of the first and second entries; (b) establishing an expression embodying the first and second relations; (c) exercising the expression to alter at least one altered entry of the selected first second and third entries; and (d) observing at least one entry of the selected first second and third entries other than the at least one altered entry.

US Patent:

53833023, Jan 24, 1995

Filed:

Oct 8, 1992

Appl. No.:

7/958271

Inventors:

Ronald F. Hill - Huntington Beach CA

International Classification:

A01G 100

US Classification:

47 78

Abstract:

A root disbursement element is provided around the root ball of a tree, being adapted to direct some of the roots from the root ball downwardly while permitting others to grow outwardly. In those numerous situations where there is a hardscape near the tree, a root-control barrier is provided between the root disbursement element and the hardscape, in spaced relationship from the root disbursement element. The root-control barrier directs downwardly those roots that emanate outwardly from the disbursement element, to a depth sufficiently great that damage to the hardscape is prevented.

US Patent:

46219420, Nov 11, 1986

Filed:

Sep 27, 1984

Appl. No.:

6/655504

Inventors:

Ronald F. Hill - Huntington Beach CA

Assignee:

Bartron Corporation - Laguna Hills CA

International Classification:

E01C 520
E01C 1500

US Classification:

404 41

Abstract:

A grass paving unit of honeycomb cell construction with side walls and underlying base surfaces contoured to provide complementary interlocking surfaces and cleat members to add positional stability to the units.