Patent ID: 6276092
Filing Date: 2001-08-21
Classification: E05D,E05F,E05Y,E06B

Abstract:
A combined sliding and pivot window assembly, comprising a plurality of sashes, a plurality of substantially C-shaped sash support frames corresponding to that of said sashes to each hold one said sash thereto, an outer window frame within which said sash support frames being fixed, a combined sliding and locking mechanism provided in a lower horizontal member of each of said sash support frames for said sash support frames to either slide or be locked on a rail correspondingly provided on said outer window frame, pivot mechanisms mounted to upper and lower ends of a vertical member of each said sash for said sash to be pivotally turned open or closed relative to said sash support frame holding said sash, and an elastic two-end locking mechanism mounted in another vertical member of each of said sashes for easily locking said sashes to upper and lower horizontal members of said sash support frame corresponding to said sash;said substantially C-shaped sash support frames, each having two horizontal and two vertical frames to form a closed rectangular or square member, each having two horizontal frames and only one single vertical frame; said C-shaped sash support frames having their open side, that is, a side of said support frames without the vertical frame, all facing toward the same direction, such that when all of said sash support frames are pushed to one side in said outer window frame, said sashes supported by said C-shaped sash support frames could still be pivotally and outward opened;said combined sliding and locking mechanism each including a guide block having a beveled top normally elastically projected from a top surface of said lower horizontal member of said sash support frame, said guide block also having a spherical bottom to press against a rear upper surface of a lever plate that extends a predetermined length in the direction of said lower horizontal member of said sash support frame; a rotating shaft being provided within a middle section of said lever plate for a pulley to mount thereon, such that said pulley rotatably slides on said rail on which said sash support frame slides and serves as a fulcrum in the lever motion of said lever plate, so that descending of said rear end of said lever plate by said guide block causes ascending of a front end of said lever plate; a return spring being provided above said front end of said lever plate to normally depress said front end of said lever plate; a first rubber stopper being held to said front end of said lever plate, such that when said front end of said lever plate is in a descendant position, said first rubber stopper downward presses against a top surface of said rail; and an n-shaped member being fixed to a middle section of said lever plate behind said pulley, said n-shaped member including two symmetrical and generally L-shaped leg portions having second rubber stoppers provided at lower inner ends thereof to frictionally contact with two lower edges of said rail; whereby when said sash is in a pivotally opened position, said guide block is allowed to freely project upward from said top surface of said lower horizontal member of said sash support frame and brings said second rubber stoppers on said legs of said n-shaped member to forcefully and frictionally press against said rail, locking said sash support frame to said rail without sliding any further on said rail; andsaid pivot mechanism each including a pivot shaft, an outer end of which projecting from a top or a bottom surface of said vertical member of said sash and then extending into said upper or lower horizontal member of said sash support frame and being secured thereto with a nut, so that said pivot shaft does not rotate relative to said sash support frame; a rotation-control means being fixedly mounted around said pivot shaft at an inner part thereof to locate in said vertical member of said sash, said rotation-control means being disposed between two frictional washers with two frictional rings separately disposed at two outer sides of said two frictional washers; a long bolt being extended through a central area of said frictional washers, said frictional rings, and said rotation-control means before being extended through and secured to said pivot shaft by an adjusting nut screwed onto an outer end of said long bolt projected from said outer end of said pivot shaft; whereby when said adjusting nut is tightened against said outer end of said long bolt, said frictional washers and said frictional rings are highly frictionally contact with one another, allowing said sash to stably stay at any desired pivotally opened position.