David J Fenzel

US Patent:

7975715, Jul 12, 2011

Filed:

Jun 11, 2007

Appl. No.:

11/811629

Inventors:

Travis G. Ramler - Elyria OH, US
Andrew Marsh - Elyria OH, US
David Fenzel - Grafton OH, US

Assignee:

Bendix Commercial Vehicle Systems, LLC - Elyria OH

International Classification:

G05D 7/00
F16K 15/14
B60T 15/38
B60T 11/34

US Classification:

137102, 137851, 303 64, 303 33, 303 40

Abstract:

A valve for use in a pneumatic system of a truck-trailer having a source of air under pressure, a reservoir, at least one spring brake unit and a brake service line is provided. The valve includes a housing, a pressure protection valve portion, a spring brake actuation valve portion and an anti-compounding valve portion. The housing has a supply passage in communication with the source of air under pressure. The pressure protection valve portion is disposed within a first chamber of the housing. The first chamber has an inlet in communication with the supply passage and an outlet in communication with the reservoir. The pressure protection valve portion is configured to selectively block the flow of pressurized air from the supply passage to the reservoir through the first chamber. The spring brake actuation valve portion is disposed within a second chamber of the housing.

US Patent:

52151751, Jun 1, 1993

Filed:

Dec 16, 1991

Appl. No.:

7/808341

Inventors:

David T. Fenzel - Grafton OH

Assignee:

Allied-Signal Inc. - Morristown NJ

International Classification:

F16D 2508

US Classification:

192 91A

Abstract:

A clutch drive mechanism for the cooling fan of an automotive engine includes a driving member rotated by the vehicle engine and a driven member carrying fan blades. The driving member includes an axially movable portion which is rotated through drive pins slidably received in bores in the axially movable portion. Resilient grommets are carried in the walls of the bores and engage the pin to prevent noise and rattling as the clutch members are engaged and disengaged. Grooves are provided on the pins which receive the grommets when the axially movable portion is in the fully disengaged position, which allows the axially movable portion to move to a truly centered position with respect to the spindle, thereby eliminating stress on the components when the mechanism is in the released condition.

US Patent:

48301612, May 16, 1989

Filed:

Sep 25, 1987

Appl. No.:

7/102051

Inventors:

John L. Hall - Strongsville OH
David T. Fenzel - Grafton OH
Dennis R. Shamine - Lorain OH

Assignee:

Allied-Signal Inc. - Morristown NJ

International Classification:

F16D 310
F16D 25063

US Classification:

192 91A

Abstract:

A clutch drive for a vehicle engine cooling fan includes a pulley portion which is driven by the vehicle engine, a fan plate which rotatably mounts the engine cooling fan, and a pressure plate which engages the fan plate to drive the latter when the clutch is engaged. Torque transmission from the pulley to the pressure plate is through a series of circumferentially spaced coiled springs which also yieldabel urge the pressure plate into driving engagement with the fan plate. A spring stabilizer defines a circumferentially extending cavity which receives several coils of the spring to stabilize the latter and to prevent displacement of the coils circumferentially with respect to each other during engagement and disengagement of the clutch. The stabilizer also slidably engages both the pressure plate and the pulley, thereby taking up clearances between the various members to prevent rattling and also to assist in the transmission of torque to the pressure plate.

US Patent:

45415161, Sep 17, 1985

Filed:

Mar 9, 1983

Appl. No.:

6/473427

Inventors:

David T. Fenzel - Grafton OH

Assignee:

Allied Corporation - Morristown NJ

International Classification:

F16D 1330
F16D 2508

US Classification:

192 85CA

Abstract:

A clutch drive (10) includes a spindle (16) mounting a driving member (94) and a driven member (118) for rotation about the spindle (16). The driving member (94) includes a pressure plate (96) which moves axially along the spindle to engage and disengage from the driven member (118). The pressure plate (96) is mounted on circumferentially spaced pins (102) which are slidably received in apertures (106) in the pressure plate (96). Springs (112) circumscribe the pins (102) and yieldably urge the pressure plate (96) into driving engagement with the driven member (118). A fluid pressure responsive piston (52) is connected to the pressure plate (96) by a bearing (68) and urges the pressure plate (96) away from the driven member (118). A spring (76) wraps around the spindle (16) and includes tabs (78, 80) engaging a fixed portion of the spindle and a collar (86) fixed to the bearing (68) to prevent rotation of the inner race (66) of the bearing (68) while collapsing to accommodate axial movement of the pressure plate (96).