Clifford Daniel Haggard

US Patent:

7311748, Dec 25, 2007

Filed:

Feb 9, 2005

Appl. No.:

11/054420

Inventors:

Lester E. Holmes - South Haven MS, US
Steven R. Jones - Olive Branch MS, US
Clifford D. Haggard - Collierville TN, US

Assignee:

Parker-Hannifin Corporation - Cleveland OH

International Classification:

B01D 46/00

US Classification:

55498, 55502, 55503, 55521, 55482, 554591, 55337, 55501, 210282, 210DIG 17, 264DIG 48

Abstract:

An air filter assembly including abutting, cylindrical housing halves, with toothed outer ends, joined via spaced, T-shaped appendages; a cylindrical air inlet of abutting semi-cylindrical housing inlet portions; a primary filter pack, for slip-fit insertion into either housing half, having an end cap integral with a cylindrical primary filter pack having sealing material on its inner end; a filter outlet end with a toothed peripheral portion, for slip-fit insertion into and angular adjustment relative to either housing end, and a plurality of ribs defining locating surfaces for an air outlet portion, and main and safety filters; the latter having a truncated cone body and an inverted conical portion; and a filter attachment base having curved bed portions, for receiving a housing periphery portion, including spaced support pads and slot portions for angularly adjustably receiving like numbers of T-shaped appendages, with a locking mechanism joining the housing and attachment base.

US Patent:

56327927, May 27, 1997

Filed:

Aug 16, 1995

Appl. No.:

8/515728

Inventors:

Clifford D. Haggard - Fayetteville NC

Assignee:

Purolator Products Company - Tulsa OK

International Classification:

B01D 4610

US Classification:

55497

Abstract:

A filter assembly is formed of an impervious elongated tubular housing and an elongated filter member positioned within the housing with its opposed longitudinal edges sealed to the housing internal tubular surface. A first barrier is interposed between the filter member first surface and the housing internal tubular surface adjacent the housing inlet end and a second barrier is interposed between the filter member second surface and the housing internal tubular surface adjacent the housing outlet end. Air flowing into the housing inlet end passes through the filter member before exiting at the outlet end.

US Patent:

57662894, Jun 16, 1998

Filed:

Feb 20, 1997

Appl. No.:

8/804241

Inventors:

Clifford D. Haggard - Fayetteville NC

Assignee:

Purolator Products Company - Tulsa OK

International Classification:

B01D 2706
B01D 4602

US Classification:

55498

Abstract:

A filter assembly is formed of an impervious elongated tubular housing and an elongated filter member positioned within the housing. In a first embodiment a barrier is interposed between a filter member first surface and the housing internal tubular surface adjacent the housing inlet end and another barrier is interposed between the filter member second surface and the housing internal tubular surface adjacent the housing outlet end. In a second embodiment, the filter member is formed of a pleated sheet, the pleats being folded at their ends, and the pleated sheet is formed into a frusto-conical shape with the conical base secured to the tubular housing interior surface. Air flowing into the housing inlet end passes through the filter member before exiting at the outlet end.

US Patent:

59023651, May 11, 1999

Filed:

Apr 21, 1998

Appl. No.:

9/063595

Inventors:

Clifford D. Haggard - Fayetteville NC

Assignee:

Purolator Products Company - Tulsa OK

International Classification:

B01D27/06;46/02

US Classification:

55498

Abstract:

A filter assembly is formed of an impervious elongated tubular housing and an elongated filter member positioned within the housing. In a first embodiment a barrier is interposed between a filter member first surface and the housing internal tubular surface adjacent the housing inlet end and another barrier is interposed between the filter member second surface and the housing internal tubular surface adjacent the housing outlet end. In a second embodiment, the filter member is formed of a pleated sheet, the pleats being folded at their ends, and the pleated sheet is formed into a frusto-conical shape with the conical base secured to the tubular housing interior surface. Air flowing into the housing inlet end passes through the filter member before exiting at the outlet end.

US Patent:

60223936, Feb 8, 2000

Filed:

Jan 28, 1998

Appl. No.:

9/014941

Inventors:

Clifford D. Haggard - Fayetteville NC

Assignee:

Purolator Products Company - Fayetteville NC

International Classification:

B01D 4610

US Classification:

55498

Abstract:

A filter assembly is formed of an impervious elongated tubular housing and an elongated filter member positioned within the housing with its opposed longitudinal edges sealed to the housing internal tubular surface. A first barrier is interposed between the filter member first surface and the housing internal tubular surface adjacent the housing inlet end and a second barrier is interposed between the filter member second surface and the housing internal tubular surface adjacent the housing outlet end. Air flowing into the housing inlet end passes through the filter member before exiting at the outlet end.

US Patent:

56327935, May 27, 1997

Filed:

Nov 6, 1995

Appl. No.:

8/554068

Inventors:

Clifford D. Haggard - Fayetteville NC

Assignee:

Purolator Products Company - Tulsa OK

International Classification:

B01D 2706
B01D 4602

US Classification:

55498

Abstract:

A filter assembly is formed of an impervious elongated tubular housing and an elongated filter member positioned within the housing. In a first embodiment a barrier is interposed between a filter member first surface and the housing internal tubular surface adjacent the housing inlet end and another barrier is interposed between the filter member second surface and the housing internal tubular surface adjacent the housing outlet end. In a second embodiment, the filter member is formed of a pleated sheet, the pleats being folded at their ends, and the pleated sheet is formed into a frusto-conical shape with the conical base secured to the tubular housing interior surface. Air flowing into the housing inlet end passes through the filter member before exiting at the outlet end.