Inventor · disambiguated record
Donald A. Crumb
Also filed as: CRUMB DONALD A
22 granted patents·219 citations·filing 1981–1998
95Inventor score
Top patents by PatentIndex Score
22 records- 0182US4785847AUnitary poppet valve assembly for a proportioning valveALLIED SIGNAL INC·Filed 1987·Granted Nov 22, 1988·35 cites·14 claims
- 0282US4503677AMaster cylinderALLIED CORP·Filed 1982·Granted Mar 12, 1985·22 cites·3 claims
- 0378US4559781AMaster cylinderALLIED CORP·Filed 1983·Granted Dec 24, 1985·19 cites·6 claims
- 0475US5016442AMaster cylinder with fluid level and pressure failure detectorALLIED SIGNAL INC·Filed 1989·Granted May 21, 1991·21 cites·4 claims
- 0569US5161375ASpring caging for a master cylinderALLIED SIGNAL INC·Filed 1991·Granted Nov 10, 1992·18 cites·11 claims
- 0658US5207062ACenter valve master cylinder with adjustable caged primary springALLIED SIGNAL INC·Filed 1992·Granted May 4, 1993·12 cites·10 claims
- 0757US5214917ACenter valve master cylinder with self-adjusting compensation center valveALLIED SIGNAL INC·Filed 1992·Granted Jun 1, 1993·11 cites·12 claims
- 0855US5329769AMaster cylinder and brake booster arrangement for a brake systemALLIED SIGNAL INC·Filed 1993·Granted Jul 19, 1994·11 cites·6 claims
- 0954US5046313AMaster cylinder with fluid level and pressure failure detectionALLIED SIGNAL INC·Filed 1989·Granted Sep 10, 1991·9 cites·6 claims
- 1053US5279125AMaster cylinder with caging means to secure return spring limiting studALLIED SIGNAL INC·Filed 1992·Granted Jan 18, 1994·12 cites·8 claims
- 1150US4815292AMulti-part primary pressure-balanced proportioning valve with brake pressure failure switchALLIED SIGNAL INC·Filed 1988·Granted Mar 28, 1989·8 cites·12 claims
- 1248US5946914AMaster cylinder reservoir retention meansBOSCH SYST FREINAGE·Filed 1998·Granted Sep 7, 1999·11 cites·7 claims
- 1345US5136847ACap for a reservoir of a master cylinderALLIED SIGNAL INC·Filed 1991·Granted Aug 11, 1992·7 cites·7 claims
- 1441US4407121AMaster cylinderBENDIX CORP·Filed 1981·Granted Oct 4, 1983·4 cites·13 claims
- 1540US4908522APressure-balanced proportioning valve with vent-controlled bypassALLIED SIGNAL INC·Filed 1988·Granted Mar 13, 1990·4 cites·12 claims
- 1637US5144976AVented screw-in proportioning valveALLIED SIGNAL INC·Filed 1991·Granted Sep 8, 1992·6 cites·12 claims
- 1733US4843820ABrake system in-line fast fill valveALLIED SIGNAL INC·Filed 1988·Granted Jul 4, 1989·2 cites·35 claims
- 1833US4821519APrimary pressure-balanced proportioning valveALLIED SIGNAL INC·Filed 1987·Granted Apr 18, 1989·2 cites·20 claims
- 1931US4929033APrimary and secondary pressure-balanced proportioning valveALLIED SIGNAL INC·Filed 1988·Granted May 29, 1990·2 cites·8 claims
- 2031US4903387AMethod for making a proportioning valve having a unitary poppet valve assemblyALLIED SIGNAL INC·Filed 1988·Granted Feb 27, 1990·2 cites·4 claims
- 2130US4995676APositioning ring for a hydraulically operated warning deviceALLIED SIGNAL INC·Filed 1989·Granted Feb 26, 1991·0 cites·15 claims
- 2229US5313796ARemote compensation valves for a master cylinder in a brake systemALLIED SIGNAL INC·Filed 1993·Granted May 24, 1994·1 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →