A hanging weight structure for a curtain has a hanging weight member, a connecting member, and two cover caps. The hanging weight member has two sides respectively mounted with the slot and the longer slot, and then each two hanging weight members are connected by a connecting member, so that each hanging weight member located at the lower portion of the curtain sheet is connected to each other through the connecting member to ensure the stability of the hem of the curtain sheet and maintain the curtain sheets being straight when they are collected or unfolded. Furthermore, a cover cap has the positioning rod that positioning the connecting member, which helps to improve the shading and dimming effect of the curtain sheets.

Disclosed is a wheel system and a kit and method, for use with a track, said wheel system comprising: a wheel carriage; a set of wheels, attached to the wheel carriage; —a link, having a first end, releasably attached to the wheel carriage and a second end releasably attached to an extension. Also, disclosed is a wheel system, for use with a track, the wheel system having a wheel carriage; a set of wheels, attached to the wheel carriage; —a link, having a first end, operatively attached to the wheel carriage; wherein angles of the wheels and the width of the wheel carriage are sized to fit into multiple sizes of tracks.

Disclosed is a disposable curtain system, a hook attachment and a preassembled quick-release system therefor and method. The disposable curtain system is for use in health care facilities to maintain a clean environment. The disposable curtain system includes: a curtain attachment system comprising: a wheel system, the wheel system having: a first end with rollers for use with a track; and a second end with an attachment, the attachment having a first hole, opening or bore therein; an extension, attached to the wheel system, the extension having: first end with a quick release for a curtain attached thereto; and a second end with corresponding hole, opening or bore therein and a corresponding attachment for going through the first hole, opening or bore in the attachment, wherein the corresponding attachment is a closed hole, opening or bore.

Disclosed is a disposable curtain system, a hook attachment and a preassembled quick-release system therefor and method. The disposable curtain system is for use in health care facilities to maintain a clean environment. The disposable curtain system includes: a curtain attachment system comprising: a wheel system, the wheel system having: a first end with rollers for use with a track; and a second end with an attachment, the attachment having a first hole, opening or bore therein; an extension, attached to the wheel system, the extension having: first end with a quick release for a curtain attached thereto; and a second end with corresponding hole, opening or bore therein and a corresponding attachment for going through the first hole, opening or bore in the attachment, wherein the corresponding attachment is a closed hole, opening or bore.

A track hanger (100) includes a hook (103) and an extension (104), a base member (102), and a key (403). The key is detachable from the hook, and the base member is detachable from the extension. The key can include a first major surface (401) and a second major surface (402). The first major surface can define one or more barbs (404) that facilitate one-way insertion of the key into a track (106).

A track hanger (100) includes a hook (103) and an extension (104), a base member (102), and a key (403). The key is detachable from the hook, and the base member is detachable from the extension. The key can include a first major surface (401) and a second major surface (402). The first major surface can define one or more barbs (404) that facilitate one-way insertion of the key into a track (106).

A header attachment fixture and methods for its use are disclosed. The header attachment fixture includes two attachment pieces and a header support piece. Each of the two attachment pieces is respectively attached to a distinct one of the two window casement pieces. The header support piece is placed between and attached to each of the two attachment pieces. Each of the two attachment pieces has a fastener portion for attaching the attachment piece to a window casement piece, and a fixture for attaching the attachment piece to the header support piece. Accordingly, the fastener portion is substantially hidden from view outside the header support piece.

A track hanger (100) includes a hook (103) and an extension (104), a base member (102), and a key (403). The key is detachable from the hook, and the base member is detachable from the extension. The key can include a first major surface (401) and a second major surface (402). The first major surface can define one or more barbs (404) that facilitate one-way insertion of the key into a track (106).

A track hanger (100) includes a hook (103) and an extension (104), a base member (102), and a key (403). The key is detachable from the hook, and the base member is detachable from the extension. The key can include a first major surface (401) and a second major surface (402). The first major surface can define one or more barbs (404) that facilitate one-way insertion of the key into a track (106).

An opening and closing device for curtains and a system based on the same, mounted on a curtain track, comprises a main engine and a roller mechanism, The main engine comprises a shell with a cavity, a driving wheel mounted in the cavity and partially exposed the shell, a motor arranged in the cavity and controlling the driving wheel to rotate, a controller lied in the cavity and controlling the motor to start and stop, and a signal transceiver module coupled electrically with the controller and receiving starting and stopping signals of the motor; the driving wheel is used for driving the curtains to move along the curtain track; a roller mechanism is mounted on the shell, an end, far away from the shell, of the roller mechanism is hung on the curtain track and presses the driving wheel closely on the curtain track.