Invention Grant
- Patent Title: Window covering lifting system and method
- Patent Title (中): 窗帘提升系统及方法
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Application No.: US10951216Application Date: 2004-09-27
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Publication No.: US07287570B2Publication Date: 2007-10-30
- Inventor: Toralf H. Strand
- Applicant: Toralf H. Strand
- Applicant Address: US SC Fort Mill
- Assignee: Springs Window Fashions LP
- Current Assignee: Springs Window Fashions LP
- Current Assignee Address: US SC Fort Mill
- Agency: Lerner, David, Littenberg, Krumholz & Mentlik, LLP
- Main IPC: E06B9/30
- IPC: E06B9/30
Abstract:
A window covering, a lifting system for a window covering and a release mechanism for a lifting mechanism are disclosed. The window covering includes a head rail, a bottom rail, a window covering, a drive shaft and a lift cord attached to the bottom rail. The release mechanism includes a spring coupled to the drive shaft for preventing or allowing rotation. Methods of assembling and raising and lowering window coverings are also disclosed.
Public/Granted literature
- US20050109471A1 Window covering lifting system and method Public/Granted day:2005-05-26
Information query
IPC分类:
