Invention Grant
- Patent Title: Damper with digital valve
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Application No.: US15450885Application Date: 2017-03-06
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Publication No.: US09810282B2Publication Date: 2017-11-07
- Inventor: Matthew L. Roessle , Karl C. Kazmirski , Jeroen K. Paenhuysen , Darrell G. Breese , Daniel T. Keil , Thomas P. Mallin , Jeffrey T. Gardner
- Applicant: Tenneco Automotive Operating Company Inc.
- Applicant Address: US IL Lake Forest
- Assignee: Tenneco Automotive Operating Company Inc.
- Current Assignee: Tenneco Automotive Operating Company Inc.
- Current Assignee Address: US IL Lake Forest
- Agency: Harness, Dickey & Pierce, P.L.C.
- Main IPC: F16F9/34
- IPC: F16F9/34 ; F16F9/50 ; F16F9/18 ; F16F9/46 ; F16F15/023 ; B60G13/08 ; B60G17/08

Abstract:
A shock absorber is disclosed having a pressure tube forming a working chamber, and a piston assembly slidably disposed within the pressure tube. The piston assembly may divide the working chamber into upper and lower working chambers. The piston assembly may have a piston body defining a first fluid passage extending therethrough and a first valve assembly controlling fluid flow through the first fluid passage. A second fluid passage, separate from the first fluid passage, extends from one of the upper and lower working chambers to a fluid chamber defined at least in part by the pressure tube. A plurality of digital valve assemblies are included and configured to exclusively control all fluid flow through the second fluid passage, and thus all fluid flow between the one of the upper and lower working chambers to the fluid chamber.
Public/Granted literature
- US20170175842A1 DAMPER WITH DIGITAL VALVE Public/Granted day:2017-06-22
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