Inventor
LAWRENCE RODNEY ALLEN
US13 patents
Patents
13 patentsUS11867099B1Jan 9, 2024
Crankcase ventilation system architecture
CATERPILLAR INC3 citations69
US11946397B1Apr 2, 2024
Pre-heated crankcase ventilation system architecture
CATERPILLAR INC2 citations64
US10612687B2Apr 7, 2020
Shutoff valve assembly and sensing subsystem for detecting state of same
CATERPILLAR INC2 citations64
US11988119B1May 21, 2024
Internal combustion engine with ventilation system for crankcase dilution
CATERPILLAR INC0 citations55
US11566592B2Jan 31, 2023
Fluid supply system having shutoff valve with stabilized electrical valve actuator
CATERPILLAR INC0 citations55
US11028806B2Jun 8, 2021
Fluid supply system having shutoff valve with stabilized electrical valve actuator
CATERPILLAR INC0 citations55
US12410737B2Sep 9, 2025
Internal combustion engine with ventilation system for a crankcase
CATERPILLAR INC0 citations51
US12071871B1Aug 27, 2024
Positive pressure air cleaning apparatus for a crankcase ventilation system
CATERPILLAR INC0 citations51
US12497912B2Dec 16, 2025
Crankcase oil separator for internal combustion engine
CATERPILLAR INC0 citations44
US12359593B2Jul 15, 2025
Modular assemblies for crankcase oil separators
CATERPILLAR INC0 citations44
US11994220B1May 28, 2024
Wear surface sleeve press fit onto a shaft in a high temperature air valve application
CATERPILLAR INC0 citations44
US12168945B1Dec 17, 2024
Breather for crankcase ventilation system
CATERPILLAR INC0 citations43
US11454147B2Sep 27, 2022
Internal combustion engine with purge system
CATERPILLAR INC0 citations42