Invention Grant
- Patent Title: Active tension device for a window covering
- Patent Title (中): 用于窗帘的主动张紧装置
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Application No.: US12033167Application Date: 2008-02-19
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Publication No.: US07931069B2Publication Date: 2011-04-26
- Inventor: Joe Cannaverde , Roger Redin
- Applicant: Joe Cannaverde , Roger Redin
- Applicant Address: US CT Stamford
- Assignee: RollEase Inc.
- Current Assignee: RollEase Inc.
- Current Assignee Address: US CT Stamford
- Agency: Gottlieb, Rackman & Reisman
- Main IPC: E06B9/305
- IPC: E06B9/305 ; E06B9/386 ; E06B9/388 ; E06B9/00 ; E06B9/30 ; A47H1/00 ; F16H55/36
Abstract:
A tension device that prevents a window covering from operating properly until the tension device is installed. The tension device incorporates a drive wheel, casing, anchoring arm and drive stud. The drive stud has two sections, one keyed and one cylindrical. Before the tension device is installed, the keyed section of the drive stud engages the drive wheel and the casing, thereby preventing them from rotating relative to each other. When the tension device is installed, the drive stud must be inserted into the anchoring arm causing the keyed section of the drive stud to disengage the drive wheel and thereby allow the drive wheel to rotate relative to the casing.
Public/Granted literature
- US20090205788A1 ACTIVE TENSION DEVICE FOR A WINDOW COVERING Public/Granted day:2009-08-20
Information query
IPC分类:
