Roy W. Blain

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74078 Heilbronn, DE

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Patents Grantslast 30 patents

Information Patent Grant
Flow metering solenoid valve
- Patent number 6,220,277
- Issue date Apr 24, 2001
- Roy W. Blain
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Elevator up start
- Patent number 5,992,573
- Issue date Nov 30, 1999
- Roy W. Blain
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Elevator position lock
- Patent number 5,810,118
- Issue date Sep 22, 1998
- Roy W. Blain
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Servo control for hydraulic elevator
- Patent number 5,593,004
- Issue date Jan 14, 1997
- Roy W. Blain
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Up leveling control system for small elevators
- Patent number 5,232,070
- Issue date Aug 3, 1993
- Roy W. Blain
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Three speed valve control for high performance hydraulic elevator
- Patent number 4,800,990
- Issue date Jan 31, 1989
- Roy W. Blain
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Pressure/viscosity compensated up travel for a hydraulic elevator
- Patent number 4,637,495
- Issue date Jan 20, 1987
- Roy W. Blain
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Down valve for the down speed control of a hydraulic elevator
- Patent number 4,601,366
- Issue date Jul 22, 1986
- Roy W. Blain
- B66 - HOISTING LIFTING HAULING