Inventor · disambiguated record
William K. Engel
Also filed as: ENGEL WILLIAM K · ENGEL WILLIAM KEITH
18 granted patents·264 citations·filing 1975–2007
94Inventor score
Top patents by PatentIndex Score
18 records- 0183US4873894ABalanced free-planet drive mechanismCATERPILLAR INC·Filed 1988·Granted Oct 17, 1989·42 cites·29 claims
- 0277US5392693APiston assembly for a fluid translating deviceCATERPILLAR INC·Filed 1994·Granted Feb 28, 1995·38 cites·5 claims
- 0373US5490446AApparatus and method for a piston assemblyCATERPILLAR INC·Filed 1994·Granted Feb 13, 1996·32 cites·7 claims
- 0473US5265331AMethod of manufacturing a piston for an axial piston fluid translating deviceCATERPILLAR INC·Filed 1992·Granted Nov 30, 1993·37 cites·1 claims
- 0572US4640095ADigital electro-hydraulic valve arrangementCATERPILLAR INC·Filed 1985·Granted Feb 3, 1987·26 cites·7 claims
- 0668US8091114B2Integrated security event management systemLOMMOCK RICHARD NICHOLAS·Filed 2007·Granted Jan 3, 2012·9 cites·21 claims
- 0753US5279205AAxial piston fluid translating unit with sealed barrel plateCATERPILLAR INC·Filed 1992·Granted Jan 18, 1994·18 cites·11 claims
- 0851US5251536AAxial piston pump with off-center pivotCATERPILLAR INC·Filed 1992·Granted Oct 12, 1993·15 cites·9 claims
- 0948US5724733AMethod of producing a piston assemblyCATERPILLAR INC·Filed 1996·Granted Mar 10, 1998·14 cites·5 claims
- 1046US4031975AMechanical multiplier for the purpose of speed and steering control for hydrostatic systemCATERPILLAR TRACTOR CO·Filed 1976·Granted Jun 28, 1977·8 cites·7 claims
- 1141US5730042ARetaining device for axial piston machinesCATERPILLAR INC·Filed 1996·Granted Mar 24, 1998·9 cites·12 claims
- 1236US4048907ARadial piston pump or motor with unrestricted inlet meansCATERPILLAR TRACTOR CO·Filed 1975·Granted Sep 20, 1977·4 cites·10 claims
- 1335US4141216ACombination shuttle and high-pressure relief valveCATERPILLAR TRACTOR CO·Filed 1977·Granted Feb 27, 1979·4 cites·10 claims
- 1433US4265165ARadial piston fluid translating device with power conserving scavenging meansCATERPILLAR TRACTOR CO·Filed 1979·Granted May 5, 1981·3 cites·11 claims
- 1532US4237774ADisplacement control valving for a radial piston deviceCATERPILLAR TRACTOR CO·Filed 1979·Granted Dec 9, 1980·2 cites·18 claims
- 1631US4147092ASelf-filling fluid deviceCATERPILLAR TRACTOR CO·Filed 1977·Granted Apr 3, 1979·1 cites·11 claims
- 1730US4163368ACentrifugal replenishing pump for a hydrostatic pump motor systemCATERPILLAR TRACTOR CO·Filed 1977·Granted Aug 7, 1979·1 cites·5 claims
- 1829US5214994ASeal ring with attached biasing meansCATERPILLAR INC·Filed 1992·Granted Jun 1, 1993·1 cites·9 claims
Join the waitlist — get patent alerts
Get an alert when William K. Engel files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →