Fred R. Underwood

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Dallas, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Adjustable fail-safe rotary spring operator with a retaining band
- Patent number 11,365,824
- Issue date Jun 21, 2022
- Rotork Plc
- Frederick Rand Underwood
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information Patent Grant
Adjustable fail-safe rotary spring operator with a retaining band
- Patent number 10,228,073
- Issue date Mar 12, 2019
- CONTROLS INTERNATIONAL, INC.
- Frederick Rand Underwood
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information Patent Grant
Adjustable fail-safe rotary spring operator with a retaining band
- Patent number 10,145,489
- Issue date Dec 4, 2018
- Frederick Rand Underwood
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information Patent Grant
Adjustable fail-safe rotary spring operator with a retaining band
- Patent number 9,151,351
- Issue date Oct 6, 2015
- CONTROLS INTERNATIONAL, INC.
- Frederick Rand Underwood
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Vane actuator
- Patent number 6,289,787
- Issue date Sep 18, 2001
- K-Tork International, Inc.
- Fred R. Underwood
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
ADJUSTABLE FAIL-SAFE ROTARY SPRING OPERATOR WITH A RETAINING BAND
- Publication number 20190072203
- Publication date Mar 7, 2019
- CONTROLS INTERNATIONAL, INC.
- Frederick Rand Underwood
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information Patent Application
ADJUSTABLE FAIL-SAFE ROTARY SPRING OPERATOR WITH A RETAINING BAND
- Publication number 20160161016
- Publication date Jun 9, 2016
- CONTROLS INTERNATIONAL, INC.
- Frederick Rand Underwood
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
ADJUSTABLE FAIL-SAFE ROTARY SPRING OPERATOR WITH A RETAINING BAND
- Publication number 20160161021
- Publication date Jun 9, 2016
- CONTROLS INTERNATIONAL, INC.
- Frederick Rand Underwood
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...