Invention Grant
- Patent Title: Hydraulic apparatus return to neutral mechanism
- Patent Title (中): 液压装置回到中立机构
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Application No.: US13457800Application Date: 2012-04-27
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Publication No.: US09228572B2Publication Date: 2016-01-05
- Inventor: Jason Scot Richardson , Jason Lee Emmette , Richard C. Hynes , Brook Cutshaw , Somer R. Malone , Michael T. Crosby
- Applicant: Jason Scot Richardson , Jason Lee Emmette , Richard C. Hynes , Brook Cutshaw , Somer R. Malone , Michael T. Crosby
- Applicant Address: US OH Cleveland
- Assignee: Parker-Hannifin Corporation
- Current Assignee: Parker-Hannifin Corporation
- Current Assignee Address: US OH Cleveland
- Agent Robert J. Clark
- Main IPC: F15B15/22
- IPC: F15B15/22 ; F01B13/04 ; F04B1/14 ; F03C1/06 ; F03C1/40 ; F04B1/20 ; F04B1/29
Abstract:
A hydraulic apparatus is provided with a return to neutral mechanism for returning a trunnion control bracket arm to a neutral position. The return to neutral mechanism comprises a pair of springs, one spring connecting a fixed bracket to a first rotatable bracket and the other spring connecting the fixed bracket to a second rotatable bracket. The mechanism uses springs with different spring constants and the springs are attached to the brackets in a single plane.
Public/Granted literature
- US20120275933A1 HYDRAULIC APPARATUS RETURN TO NEUTRAL MECHANISM Public/Granted day:2012-11-01
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