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US 7,243,699 B2Granted
Window shade with conical winding shaft
AssigneeBOS GmbH & Co. KG
InventorsKonrad Wilhelm Ganser, Werner P. Schlecht
Life of this patent
Estimating the term…
Abstract
A window shade assembly for motor vehicles is provided. The window shade assembly includes a window shade element that is cut into a trapezoidal shape in order to be optimally adapted to the shape of the corresponding window. The winding shaft for this window shade web resembles a truncated cone that is approximated by means of a cylindrical core with wrappings applied thereon.
Claims31
A window shade assembly for motor vehicles comprising:
- a winding shaft that includes a core with a cylindrical outer circumferential surface;
- a first wrapping that is non-rotatably applied onto the winding shaft, the first wrapping comprising a band that is spirally wrapped on the core of the winding shaft, the first wrapping being situated adjacent to a first end of the core;
- a second wrapping that is applied onto the winding shaft, the second wrapping comprising a band that is spirally wrapped on the core of the winding shaft, the second wrapping having an outside diameter relatively smaller than an outside diameter of the first wrapping, the second wrapping being situated between the first wrapping and a second end of the core, such that a cone is approximated in sections by the first and second wrappings and a section of the core that is free of wrappings;
- and
- a window shade element having a non-rectangular shape, an edge of the window shade element being fixed on the outer circumferential surface of the first and second wrappings and the section of the core that is free of wrappings.
2 more elements
A window shade assembly for motor vehicles comprising:
- a winding shaft including a core with a cylindrical outer circumferential surface;
- a first wrapping that is non-rotatably applied onto the winding shaft, the first wrapping comprising a band that is helically wrapped on the core of the winding shaft, the first wrapping beginning adjacent to a first end of the core and extending a certain distance in the direction of a second end of the core;
- a second wrapping comprising a band that is helically wrapped on the first wrapping, the second wrapping having a length relatively shorter than a length of the first wrapping measured in the longitudinal direction of the winding shaft such that a cone is approximated in sections by the first and second wrappings and a section of the core that is free of wrappings;
- and
- a window shade element having a non rectangular shape, an edge of the window shade element being fixed on the outer circumferential surface of the first and second wrappings and the section of the core that is free of wrappings.
2 more elements
A window shade assembly for motor vehicles comprising:
- a winding shaft including a core with a cylindrical outer circumferential surface;
- a wrapping that is non-rotatably applied onto the winding shaft, the wrapping comprising a band that is spirally wrapped on the core of the winding shaft, the wrapping having a pitch of the wrapping that is reduced in as the wrapping extends towards an end of the core such that a cone is approximated by the wrapping;
- and
- a window shade element having a non rectangular shape, an edge of the window shade element being fixed on the outer circumferential surface of the wrapping and the section of the core that is free of wrappings.
1 more element
Dependencies are inferred from the claim text.