Invention Grant
- Patent Title: Tilt tension mechanism for chair
- Patent Title (中): 椅子倾斜张力机构
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Application No.: US11130039Application Date: 2005-05-13
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Publication No.: US07500718B2Publication Date: 2009-03-10
- Inventor: Tim Fookes
- Applicant: Tim Fookes
- Applicant Address: US MI Holland
- Assignee: Haworth, Inc.
- Current Assignee: Haworth, Inc.
- Current Assignee Address: US MI Holland
- Agency: Flynn, Thiel, Boutell & Tanis, P.C.
- Main IPC: A47C1/024
- IPC: A47C1/024 ; A47C1/032
Abstract:
A tilt tension mechanism for a chair comprises a gear drive mechanism for driving a torsion bar having a drive shaft, a face gear and an actuator shaft with a pinion gear section. The pinion gear section and face gear have cooperating spiral threads which provide for multi-teeth engagement. An isolator bearing is disposed adjacent to the engagement section between said pinion gear teeth and said face gear teeth to support vertical tooth loads.
Public/Granted literature
- US20050275269A1 Tilt tension mechanism for chair Public/Granted day:2005-12-15
Information query
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