Patent Number: 7,707,779

Title: Frame assembly for window with vertically sliding sash

Abstract: A frame assembly for a window including a sash that slides vertically within a master frame. The master frame is substantially of unitary, one-piece construction that can advantageously be manufactured by an injection moulding process. The sash frame can also be of unitary, one-piece construction, and can also be manufactured by injection moulding. The master frame can be provided with liner support structures along the jambs to receive jamb liners in snap-fit. The liner support structures can advantageously be integrally moulded with the master frame.

Inventors: Petta; Gabriel (Woodbridge, CA), Ohrstrom; Rolf J. (Toronto, CA)

Assignee: Alpa Lumber Inc.

International Classification: E06B 1/04 (20060101)

Expiration Date: 5/04/12018