Invention Grant
- Patent Title: Pneumatic chair jack
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Application No.: US16321169Application Date: 2018-04-10
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Publication No.: US11191686B2Publication Date: 2021-12-07
- Inventor: Jason K. Werkheiser
- Applicant: D.T. Davis Enterprises, Ltd.
- Applicant Address: US PA Allentown
- Assignee: D.T. Davis Enterprises, Ltd.
- Current Assignee: D.T. Davis Enterprises, Ltd.
- Current Assignee Address: US PA Allentown
- Agency: Duane Morris LLP
- International Application: PCT/US2018/026832 WO 20180410
- International Announcement: WO2018/191228 WO 20181018
- Main IPC: A61G7/10
- IPC: A61G7/10 ; A61G5/14 ; A61G7/02

Abstract:
A multi-cell inflatable jack includes a plurality of jack elements. Each of the plurality of jack elements includes a body having a predetermined perimeter shape and defining a perimeter chamber and a central chamber. A valve is coupled to the body and configured to provide air flow to one of the perimeter chamber or the central chamber. A plurality of flow control stringers are located between the first chamber portion and the second chamber portion and are configured to control an air flow rate into each of the perimeter chamber and the central chamber. At least one fastener is formed on the body and configured to attach the jack element to at least one additional jack element in a multi-cell stack.
Public/Granted literature
- US20200022859A1 PNEUMATIC CHAIR JACK Public/Granted day:2020-01-23
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