Duane A Avard

Address:

8833 W Rs Ave, Schoolcraft, MI 49087

Phone:

(269)6683400

VIN:

2GTEK19J571727134

Make:

GMC

Model:

SIERRA 1500

Year:

2007

US Patent:

45601739, Dec 24, 1985

Filed:

Dec 21, 1984

Appl. No.:

6/684874

Inventors:

William V. Adams - Scotts MI
Duane A. Avard - Schoolcraft MI

Assignee:

Durametallic Corporation - Kalamazoo MI

International Classification:

F16J 1534
F16J 1540

US Classification:

277 15

Abstract:

A mechanical seal construction of the double or tandem-type, wherein a stationary ring, preferably the gland ring, is provided with a circulation inducing dam positioned within an annular chamber defined between the inner and outer seals. The dam extends from the downstream side of an outlet to the upstream side of an inlet, whereby rotation of the shaft effectively induces coolant to flow into the chamber through the inlet and then around the chamber to the outlet. The dam has end walls which effectively act as deflectors at both the inlet and outlet to assist the cooling fluid in its entry into and departure from the chamber.

US Patent:

47430346, May 10, 1988

Filed:

Mar 27, 1987

Appl. No.:

7/032108

Inventors:

Kenneth G. Kakabaker - Kalamazoo MI
Duane A. Avard - Schoolcraft MI

Assignee:

Durametallic Corporation - Kalamazoo MI

International Classification:

F16J 15447

US Classification:

277 53

Abstract:

A sealing device employing interfitting relatively rotatable rings, namely a stator and a rotor disposed for cooperation between a housing and a rotatable shaft. The stator is nonrotatably and sealingly engaged within an opening formed in the housing. An elastomeric O-ring maintains a seal between the stator and housing. The rotor snugly surrounds and is nonrotatably carried with the shaft and is provided with elastomeric seal ring therebetween to prevent leakage along the shaft. The stator closely externally surrounds the rotor to define a complex pathway therebetween which inhibits flow of liquids or contaminants in either direction therethrough. This pathway includes a pair of annular collecting chambers disposed in axially spaced relationship, whereby the outer chamber collects and discharges to the environment any contaminants which enter from the environment, and the inner chamber collects and discharges back to the reservoir any lubricant or fluid which enters into the pathway from its inner end.

US Patent:

47951680, Jan 3, 1989

Filed:

Feb 23, 1988

Appl. No.:

7/161413

Inventors:

William V. Adams - Scotts MI
Duane A. Avard - Schoolcraft MI
Leroy A. Waling - Parchment MI

Assignee:

Durametallic Corporation - Kalamazoo MI

International Classification:

F16J 1554

US Classification:

277 80

Abstract:

A magnetic-type end face seal assembly for creating an airtight seal between a housing and a rotatable shaft which projects outwardly through a housing bore. An insert ring of magnetically attractable material surrounds the shaft within the bore, and has a seating ring of hard synthetic material externally fixed thereto and sealingly engaged with the wall of the housing bore. The insert ring defines a first annular seal face on the outer axial end thereof. A rotating ring arrangement encircles and is nonrotatably coupled to the shaft axially adjacent the insert ring. This rotating ring arrangement includes a ring-shaped magnet which is disposed closely axially adjacent but slightly spaced from the insert ring, and this magnet mounts thereon a face ring which defines a second annular seal face which is maintained in engagement with the first seal face due to the magnetic attraction between the magnet and the insert ring.