Semi-circular window shade

Patent 5662153 Issued on September 2, 1997. Estimated Expiration Date:

July 29, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

1609877

Suspension and actuation systems for specialty window shades
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Suspension and actuation system for specialty window shades
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Issued on: 02/02/1993
Inventor: Jelic

Inventor

Rosenblatt, Milton L.

Application

No. 681846 filed on 07/29/1996

US Classes:

160/84.07, Fan type (e.g., for arched windows)160/134Fan type

Examiners

Primary: Purol, David M.

Attorney, Agent or Firm

Gene Scott - Patent Law & Venture Group

International Class

E06B 009/06

Abstract

A frame supports a fan-shaped pleated shade that is rotated from a folded open position to an unfolded closed position so that the shade covers a semi-circular window adjacent to the shade. Two pull-cords are attached to the shade to rotate it between its two extreme positions. The cords are routed over circular surfaces so that they apply a normal force to the shade throughout its movement.