Invention Grant
- Patent Title: Electric actuators having internal load apparatus
- Patent Title (中): 具有内部负载装置的电动执行器
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Application No.: US12618467Application Date: 2009-11-13
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Publication No.: US08408518B2Publication Date: 2013-04-02
- Inventor: Ross Arthur Schade , Thomas Pesek , John Stanley Bandas
- Applicant: Ross Arthur Schade , Thomas Pesek , John Stanley Bandas
- Applicant Address: US IA Marshalltown
- Assignee: Fisher Controls International, LLC
- Current Assignee: Fisher Controls International, LLC
- Current Assignee Address: US IA Marshalltown
- Agency: Hanley, Flight & Zimmerman, LLC
- Main IPC: F16K31/02
- IPC: F16K31/02

Abstract:
Electric actuators having internal load apparatus are described herein. An example electric actuator having an internal load apparatus described herein includes a housing defining a cavity to receive a drive system and a drive shaft operatively coupled to the drive system. Rotation of the drive system in a first rotational direction causes the drive shaft to move in a first rectilinear direction and rotation of the drive system in a second rotational direction causes the drive shaft to move in a second rectilinear direction opposite the first rectilinear direction. A biasing element is operatively coupled to the drive system such that least a portion of the drive system moves axially toward the biasing element to deflect the biasing element when the drive shaft reaches an end of stroke position to provide a load to the drive shaft when electric power to the electric actuator is removed.
Public/Granted literature
- US20110115319A1 ELECTRIC ACTUATORS HAVING INTERNAL LOAD APPARATUS Public/Granted day:2011-05-19
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