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Check valve with spring retained ball

A technology of check valve seat and leaf spring, which is applied in the direction of valve device, control valve, function valve type, etc., and can solve the problems of high complexity

Inactive Publication Date: 2009-07-08
BORGWARNER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In all of the above prior art check valves, the complexity is high and multiple parts are required to assemble the check valve assembly within the hydraulic tensioner

Method used

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  • Check valve with spring retained ball
  • Check valve with spring retained ball
  • Check valve with spring retained ball

Examples

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Embodiment Construction

[0033] Figure 3 to Figure 6 A first embodiment tensioner with check valve assembly 106 is shown. The hydraulic tensioner 101 has a housing 102 with a bore 111 having an open end 111a and a tapered end 111b which receives a hollow plunger 103 . A pressure chamber 104 is formed between the plunger 103 and the bore 111 of the housing 102 . Within the pressure chamber 104 is a check valve assembly 106 and a plunger biasing spring 105 with a first end 105a and a second end 105b. The first end 105a of the spring bears against the inner end 103a of the plunger 103 . The second end 105b of the plunger biasing spring 105 has an additional tang 105c with a length extending inwardly from the outer diameter of the spring to retain and limit the travel of the movable sealing member, which The sealing member may be a non-return ball 108 from a non-return ball seat 107 formed by the tapered end 111b of the bore 111 in the pressure chamber 104 .

[0034] In this embodiment, preferably a ...

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Abstract

A portion of a bore of a hydraulic tensioner is used as a check valve seat for a check ball and an end of the plunger biasing spring received in the bore of the hydraulic tensioner has a tang with a length extending in from an outer diameter of the spring, to limit and retain the travel of a check ball from the check valve seat when the pressure of an external source is not greater than the pressure in a fluid chamber formed between the bore of the housing and the plunger.

Description

[0001] References to related applications [0002] This application claims the invention of Provisional Application No. 60 / 805,388, filed June 21, 2006, entitled "CHECK VALVE WITH SPRING RETAINED BALL." This application claims the benefit under Section 35 USC § 119(e) of the US Provisional Application, which is incorporated herein by reference. technical field [0003] The invention relates to the field of check valves. More specifically, the present invention relates to check valves with spring-retained balls. Background technique [0004] Hydraulic tensioners are used to control excessive motion in a power transmission chain or similar power transmission device as the chain travels between multiple sprockets. In a power transmission system, power is transmitted by a continuous endless chain from a drive sprocket, such as a crankshaft, to one or more driven sprockets, such as those that operate a camshaft. During varying power demands, one part of the chain is tight and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H7/08
CPCF16H2007/0859F16H7/0836F16H7/0848F16H2007/0806F16H7/08F16K15/04
Inventor E·帕洛玛基J·W·切坎斯凯小·R·彭佐恩D·史密斯G·L·马克利
Owner BORGWARNER INC