Abrégé

A cordless window covering having a differential suspension mechanism. The suspension mechanism is composed of a first rotary drum for winding and unwinding the suspension cord of a window covering and a second rotary drum housing a spring with one end connected to the second rotary drum and the other end of the spring connected to an axle. Rotation of the first rotary drum and at least one end of the spring are linked by a transmission system. In operation, the transmission system creates a differential rotation rate between the first rotary drum and the relative rotation rate of the two ends of the spring. In this manner, a greater length of cord can be deployed for with a shorter length of spring extension.

Classes IPC  ?

• E06B 9/30 - Stores à lamelles ou similaires, p. ex. stores vénitiens à lamelles horizontales, p. ex. non levables levables

Abrégé

A cutting machine for window shades comprising a head rail, a bottom rail, and a plurality of light blocking sections. The cutting machine comprises a body with a platform for supporting the window shade, a clamp mechanism for securing the window shade, a blade rotationally connected to the body for cutting the window shade, and an actuating mechanism. The actuating mechanism is operatively connected to the blade, causing the blade to move in a rotational movement for cutting the secured window shade.

Classes IPC  ?

• B26D 1/00 - Coupe d'une pièce caractérisée par la nature ou par le mouvement de l'élément coupantAppareils ou machines à cet effetÉléments coupants à cet effet
• B23D 23/00 - Machines ou dispositifs pour le cisaillage ou le tronçonnage de profilés

Abrégé

A suspension cord control mechanism composed of an arresting mechanism and a biasing mechanism operable to move a light blocking element after the user has released a suspension cord. The biasing mechanism is loaded when the suspension cord is drawn by a user to lift the window covering. When the suspension cord is released, movement of the cord is stopped by the arresting mechanism and the biasing mechanism unloads to further move the light blocking element.

Classes IPC  ?

• E06B 9/32 - Dispositifs de manœuvre, de guidage ou de verrouillage

Abrégé

A window covering including a plurality of panels vertically suspended from a vertical securement member is provided. The plurality of panels is secured with the securement member about an upper transverse portion of the panels at spaced intervals along the securement member. The closure rows are convertible between different configurations by detaching the lower transverse portions of the closure rows from the suspension members.

Classes IPC  ?

• E06B 9/30 - Stores à lamelles ou similaires, p. ex. stores vénitiens à lamelles horizontales, p. ex. non levables levables