Donald A Crumb

US Patent:

48152927, Mar 28, 1989

Filed:

Feb 18, 1988

Appl. No.:

7/160784

Inventors:

Robert F. Gaiser - Stevensville MI
Donald A. Crumb - Granger IN
William F. Dillon - South Bend IN

Assignee:

Allied-Signal Inc. - Morristown NJ

International Classification:

B60T 1120
B60T 1132
F15B 700

US Classification:

60534

Abstract:

The proportioning valve assembly may be screwed into a complementary-shaped opening in a master cylinder. The valve assembly includes a differential area piston biased by a spring toward the outlet which communicates with the rear brakes. The master cylinder includes a pair of passageways which communicate primary fluid pressure and secondary fluid pressure directly to the differential area piston of the proportioning valve assembly to displace the piston to a balanced position. If there is a failure of pressure in the primary brake circuit, the proportioning valve assembly actuates the differential area piston to permit fluid flow to bypass the piston and be communicated directly to the rear brakes of the vehicle. Upon failure, a differential area sleeve surrounding the piston moves to actuate an electrical failure warning switch.

US Patent:

48215198, Apr 18, 1989

Filed:

Jun 29, 1987

Appl. No.:

7/067514

Inventors:

Robert F. Gaiser - Stevensville MI
John E. Steer - South Bend IN
Donald A. Crumb - Granger IN

Assignee:

Allied-Signal Inc. - Morristown NJ

International Classification:

B60T 826

US Classification:

60591

Abstract:

The proportioning valve assembly (40, 140) may be screwed into a complementary-shaped opening in a master cylinder (10). The valve assembly (40, 140) includes a differential area piston (50, 150) biased by a spring (70, 170) toward the outlet (21, 121) which communicates with the rear brakes. The master cylinder (10) includes a pair of passageways (16, 18) which communicate primary fluid pressure and secondary fluid pressure directly to the differential area piston (50, 150) of the proportioning valve assembly (40, 140) to displace the piston (50, 150) to a balanced position. If there is a failure of pressure in the primary brake circuit, the proportioning valve assembly (40, 140) actuates the differential area piston (50, 150) to permit fluid flow to bypass the piston (50, 150) and be communicated directly to the rear brakes of the vehicle.

US Patent:

52791254, Jan 18, 1994

Filed:

Dec 8, 1992

Appl. No.:

7/986813

Inventors:

Hugh E. Keyes - South Bend IN
Robert K. Wilson - Granger IN
Donald A. Crumb - Granger IN

Assignee:

Allied-Signal Inc. - Morristown NJ

International Classification:

B60T 1120
B60T 1716

US Classification:

60562

Abstract:

Structure for caging a return spring of a master cylinder to define limits for an operational chamber. The structure includes a first cylindrical member which engages a first piston and a second cylindrical member which engages a second piston with the return spring being located between the first and second cylindrical members. A stud which has an irregular shaped end member is retained in a groove in the second piston by the second cylindrical member and mated with a head member to define the limits for the return spring between the first and second cylindrical members and correspondingly the maximum size of the chamber within a bore of a master cylinder.

US Patent:

45036772, Mar 12, 1985

Filed:

May 20, 1982

Appl. No.:

6/380203

Inventors:

Donald A. Crumb - Mishawaka IN
Richard A. Zander - South Bend IN

Assignee:

Allied Corporation - Morristown NJ

International Classification:

B60T 1120

US Classification:

60562

Abstract:

A master cylinder includes a housing (24) with a bore (26) receiving a pair of pistons (42, 48). The piston (48) engages seals (62, 64 and 66) to substantially define paths to a pair of pressure chambers (50, 52).

US Patent:

49085220, Mar 13, 1990

Filed:

Nov 21, 1988

Appl. No.:

7/274078

Inventors:

Donald A. Crumb - Granger IN
Robert F. Gaiser - Stevensville MI
John E. Steer - South Bend IN

Assignee:

Allied-Signal Inc. - Morristown NJ

International Classification:

B60T 826

US Classification:

303 972

Abstract:

A proportioning valve (40) is disposed within a stepped bore (13) of a master cylinder (10). The proportioning valve (40) defines with the stepped bore (13) a primary pressure receiving chamber (26) and a secondary pressure receiving chamber (28). The proportioning valve (40) includes a two-part piston (58) which includes a primary piston part (52) and a secondary piston part (54) coupled together by a lost motion coupling (53, 55). The piston parts (52, 54) are biased apart by a spring (78), and a sleeve (43) is disposed about the two-part piston (50). Seals (46, 47, 69) are disposed about the primary piston part (52), sleeve (43) and secondary piston part (54) to define an intermediate vented chamber (90), wherein a vent (19) communicates with a reservoir. Pressure failure within the primary receiving chamber (26) causes the primary piston part (52) to be displaced and close off the vent (19 ) so that fluid pressure is trapped within the intermedaite chamber (90) to prevent the secondary piston part (54) from effecting the metering of fluid flow through an outlet (21).

US Patent:

53137965, May 24, 1994

Filed:

Jul 16, 1993

Appl. No.:

8/093113

Inventors:

Donald A. Crumb - Granger IN
Robert K. Wilson - Granger IN

Assignee:

AlliedSignal Inc. - Morristown NJ

International Classification:

B60T 1320

US Classification:

60549

Abstract:

A remote compensation valve (20) through which pressurized fluid from a master cylinder (14) is communicated to the wheel brakes (24, 26) of a vehicle. The compensation valve (20) has a housing (200) with a bore (202) therein for retaining a shuttle piston (210). The shuttle piston (210) has a first land (212) separated from a second land (214) by a groove (216) and an axial bore (218) connected to the groove (216) by a radial bore (224). A first spring (250) carried by the piston (210) urges a poppet valve (244) toward a seat (230) to control the communication of pressurized fluid through the axial bore (218) to an outlet port. A second spring (254) located in the housing (200) urges the piston (210) toward a rest position where the first land (212) engages a pin (234) of a tilt valve (232) to establish communication between the source of fluid and the bore (202) and the poppet valve (244) is seated on the piston (210) to prevent communication through the axial bore (218). A manual input force on a first end (262) of a movable stop pin (250) brings a second end (266) into engagement with the poppet valve (244) to initiate communication between the compensation port (206) and the master cylinder (14) to remove any air from the master cylinder (14).

US Patent:

50463136, Sep 10, 1991

Filed:

Jul 27, 1989

Appl. No.:

7/385529

Inventors:

Donald A. Crumb - Granger IN
William F. Dillon - South Bend IN
Robert F. Gaiser - Stevensville MI
Richard A. Zander - Niles MI

Assignee:

Allied-Signal Inc. - Morristown NJ

International Classification:

F15B 700
H01H 3538
B60Q 1100

US Classification:

60535

Abstract:

A master cylinder (12) having a switch (70) which is activated by either a magnet (78) carried by a float (76) in a reservoir (40) or a pin (66) moved by a differential area piston (52). The switch (70) had a first blade (82) connected a source of electrical current (106) through an indicator light (124) and a second blade (88) connected to an electrical ground (114). A reed switch (100) is connected to the first (82) and second (88) blades and responds to the magnet to close an electrical circuit to operate the indicator light (124) if a low fluid level is present in the reservoir (40). A first contact (96) on the first blade (82) is positioned in switch 70 by a non-electrical conductive actuation pin (66) that extends through the housing (22) of the master cylinder (12). A second contact (94) on the second blade ( 88) has a projection (92) that engages the housing (22) of the master cylinder (12) to define a fixed location for the first contact (94) and establish a fixed gap between the first (94) and second (96) contacts. If a pressure differential is created in the master cylinder (12) between the fluid pressure supplied to operate the wheel brakes (18) and (20), the differential area piston (52) moves and brings the second contact (96) into engagement with the first contact (94) to close the electrical circuit and activate the indicator light (124).

US Patent:

47858478, Nov 22, 1988

Filed:

Mar 27, 1987

Appl. No.:

7/044378

Inventors:

John E. Steer - South Bend IN
Donald A. Crumb - Granger IN
Richard A. Zander - Niles MI

Assignee:

Allied-Signal Inc. - Morristown NJ

International Classification:

F16K 1604

US Classification:

13750525

Abstract:

The unitary poppet valve assembly (50) comprises an annular retainer (52) having an open end (54) and an opposite end (55) with a small diameter opening (56) therein. The annular retainer (52) has a plurality of fingers (58) extending laterally therefrom for engagement with the body (12) of a proportioning valve assembly (10). A poppet (70) comprises a poppet head (72) extending radially outwardly from a longitudinal shaft (74), and an oppositely disposed abutment (76). The shaft (74) extends slidably through the small diameter opening (56) in the annual retainer (52), the abutment (76) engaging the retainer (52) adjacent the opening (56). A spring (60) is disposed between a corner or shoulder (57) of the annular retainer (52) and a shoulder (77) defined between the poppet head (72) and poppet shaft (74). The poppet (70) includes a central through opening (78) extending through the abutment (76) and to the head (72), wherein the opening (78) communicates with a lateral through opening (80) of the shaft (74). The unitary poppet valve assembly (50) may be inserted directly within an inlet opening (13) of the proportioning valve assembly (10) so that the fingers (58) engage the body (12) of the proportioning valve assembly (10).