Mark E Grimm

US Patent:

6447023, Sep 10, 2002

Filed:

Jan 27, 2000

Appl. No.:

09/492411

Inventors:

Mark T. Grimm - Frisco TX

Assignee:

Paccar Inc - Bellevue WA

International Classification:

F16L 3900

US Classification:

285319, 285921, 2851243

Abstract:

An air management apparatus and method is provided which includes both a pass-through air passage and a manifold air passage in a single, compact structure useful for controlling air transfer necessary for pneumatically controlled systems and instruments. The air management apparatus has a base plate with a device for removably attaching the air management apparatus to a firewall or other structure, and also has at least one pass-through air passage and at least one manifold air passage formed in the base plate. At least one exhaust air passage, which is a type of pass-through air passage, can also be formed in the base plate. The pass-through air passage receives air into a single inlet port and expels air out of a single outlet port, while the manifold air passage receives air into a single inlet port and expels air out at least two outlet ports. The device for removably attaching the air management apparatus to a firewall or other structure is preferably a pair of removably attachable retaining clips wherein each retaining clip has a first end fixed to the base plate and a second end movable relative to the base plate such that the second end can be moved between a released position and an attached position. A gasket can also be attached to a perimeter of the base plate to create a seal when the retaining clips are in the attached position and the base plate is attached to a firewall or other structure.

US Patent:

7201184, Apr 10, 2007

Filed:

Jan 15, 2004

Appl. No.:

10/758060

Inventors:

Jereme C. Morrow - Grapevine TX, US
Waikhew Ung - Katy TX, US
Eddie D. Huckaby - Denton TX, US
Mark T. Grimm - Dunlap IL, US

Assignee:

Paccar Inc - Bellevue WA

International Classification:

F16K 3/24

US Classification:

137508, 137536, 13754319

Abstract:

A valve is provided having a housing with an inlet and an outlet. Within the confines of the housing is a fluid flow path that allows for fluid communication between the inlet and the outlet. The valve includes a valve element that is movable to and from a position where it blocks fluid communication along the fluid flow path, thereby closing the valve. The valve also includes a resilient member provided in a chamber of the valve that is fluidly sealed from the fluid flow path. The resilient member urges the valve element to move to the position for closing the valve. When the pressure of fluid entering the inlet exceeds a preselected amount, the pressure of the fluid overcomes the urging of the resilient member and the valve element moves towards a position that allows fluid communication along the fluid flow path, thereby opening the valve.