Inventor

Lawrence F. Schexnayder

Inventor

Joliet, IL, US

Overview

1976–2001

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 24 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

F15Bprimary

F15BSystems acting by means of fluids in general30%

Y10TTechnical subjects covered by former us classification14%

E02FDredging12%

F16DCouplings for transmitting rotation7%

B60TVehicle brake control systems or parts thereof5%

B62DMotor vehicles5%

F16HGearing5%

F16JPistons5%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%

B25DPercussive tools2%

PatentTitleYear

6,321,534'Ride control'2001 5,421,545'Poppet valve with force feedback control'1995 5,220,862'Fluid regeneration circuit'1993 5,207,059'Hydraulic control system having poppet and spool type valves'1993 5,137,254'Pressure compensated flow amplifying poppet valve'1992 4,586,332'Hydraulic swing motor control circuit'1986 4,425,758'Maintaining hydrostatic system control pressure'1984 4,365,473'Hydrostatic transmission having an overspeed control'1982 4,230,022'Hydraulic rock breaker circuit for an excavator'1980 4,142,842'Dual source hydraulic steering system'1979 4,105,214'Sealing arrangement for brake housing'1978 4,102,250'Load check and bypass valve'1978 4,094,228'Fluid system having load pressure equalizing valve assemblies'1978 4,083,469'Brake cooling circuit'1978 4,055,046'Control system having override for fluid operated work elements'1977 4,024,798'Control valve providing two speed operation for a motor'1977 4,009,864'Throttling slot configuration for a valve spool'1977 4,006,939'Air pressure modulated brake valve system'1977 4,000,683'Hydraulic load lifting system'1977 3,966,066'Hydraulic circuit'1976 3,960,059'Fast exhaust circuit for hydraulic jacks'1976 3,949,844'Brake cooling system with a common fluid mixing chamber'1976 3,943,717'Contaminant removal from a hydraulic cylinder'1976 3,935,918'Dual source hydraulic steering system'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1986Patents assigned to CATERPILLAR TRACTOR CO (19)· patent assignee history

1976–1995Based in Joliet, IL, US· patent location history

1992–2001Patents assigned to CATERPILLAR INC (5)· patent assignee history

2001Based in Morris, IL, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CATERPILLAR TRACTOR CO	19	1976–1986
CATERPILLAR INC	5	1992–2001

Locations

Location	Patents	Span
Joliet, Illinois, US	23	1976–1995
Morris, Illinois, US	1	2001