Unlock instant, AI-driven research and patent intelligence for your innovation.

Piston seal assembly

A technology of sealing components and seals, which is applied to piston rings, engine seals, engine components, etc., and can solve problems such as seal failure and piston seal component failure

Active Publication Date: 2017-09-12
SCHAEFFLER TECH AG & CO KG
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in these known arrangements, applicants have found that the seal may fail due to extrusion into the gap between the piston and plate, causing the piston seal assembly to fail

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Piston seal assembly
  • Piston seal assembly
  • Piston seal assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] In the following description, certain terms are used for reasons of convenience only and are not considered to be limiting. The words "inwardly," "outerly," "inwardly," and "outwardly" refer to directions toward and away from the parts referenced in the drawings. A reference to a list of items expressed as "at least one of a, b, and c" (wherein a, b, and c all represent listed items) means any single one of items a, b, c or a combination thereof . These terms include the meanings specifically mentioned above, derivatives thereof, and words of similar meanings.

[0013] figure 1 and figure 2 A half view of a piston seal assembly 1 according to the invention is shown. The piston seal assembly 1 comprises a preferably disc-shaped piston 2 slidably supported on a shaft 3 or in a housing 4 . The piston 2 has a recess 5 on a radially inner or outer part (depending on whether the seal assembly is used to provide a seal with the shaft 3 or with the housing 4 ). A plate 6...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a piston seal assembly comprising a piston, a plate and a seal. A piston is slidably supported on the shaft or in the housing, and the piston has a recess on a radially inner or outer portion. A plate is secured to the piston and extends at least partially adjacent to the recess. The seal is located at least partially within the recess of the piston. The seal has a radial sealing surface that engages the shaft or housing and is axially movable between the piston and the plate by hydraulic fluid pressure.

Description

[0001] Citation [0002] The following document is hereby incorporated by reference in its entirety: US Provisional Application 61 / 827,234, filed May 24, 2013. technical field [0003] The present application relates generally to clutch assemblies, and more particularly, to a piston seal for a clutch assembly. Background technique [0004] Clutch assemblies and piston seal assemblies for automotive transmissions are well known. A known piston seal assembly is disclosed in US Patent Application 2012 / 0161400, which is incorporated herein by reference in its entirety. This known assembly generally comprises: a disc piston, a retaining plate and a seal. The piston is moved in an axial direction along the housing or shaft by hydraulic fluid pressure, and a seal is provided to prevent hydraulic fluid leakage during movement in one direction, and the seal is allowed to move in the opposite direction during movement Up axial displacement to allow hydraulic fluid to flow through t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/16
CPCF16J9/063F16J9/26F16J15/24F16J15/56F16J9/20
Inventor J·哈里斯B·佐格
Owner SCHAEFFLER TECH AG & CO KG