| 摘要 |
An adjustable stop is adapted to limit travel of a sliding sash window/door, and can be installed upon the window/door master frame during initial manufacturing of the product, or may be an after-market option added at some time after manufacturing was completed. The stop may even be installed upon sash windows/doors currently in service in a building. The stop is intended to limit sash travel between a closed position and a safe position, where the safe position is a position significantly less than a full-open position. The safety stop may be comprised of a housing and a tumbler being pivotally mounted within a cavity in the housing, with a spring to bias the tumbler out of an opening in the housing. Mounting is by a flange extending from the housing, with spacers of varying thickness that are capable of removably attaching thereon to accommodate sash to master frame height differences. |
| 主权项 |
1. A stop, for use in attachment to a frame that supports a sliding sash member to thereat be configured to limit travel of the sash member between a closed position and a partially opened position, the partially opened position being a sash member position between the closed sash position and a full-open sash position, said stop comprising;
a housing, said housing comprising a cavity, a first opening in a top end of said housing configured to interconnect with said cavity, and a second opening in a bottom end of said housing configured to interconnect with said cavity; a mounting flange, said mounting flange configured to protrude from said housing, said mounting flange comprising one or more openings configured to mount said stop; a tumbler, said tumbler comprising a first end and a second end; said tumbler being pivotally mounted in said housing cavity, said tumbler second end comprising a bearing surface, said bearing surface transitioning into a curved surface; a biasing member, said biasing member configured to be mounted to said tumbler to bias said second end of said tumbler to pivot outward from said housing, said biased pivotal travel of said tumbler configured to normally be limited to at least a first position or a second position, said tumbler being freely biased and limited to said first position when a push-button portion of said tumbler proximate to its first end contacts a portion of said housing; and said tumbler being biased but releasably limited to said second position by a portion of said biasing member being configured to selectively contact one or more contoured features on said housing and to engage a portion of said one or more contoured features during said biased pivotal movement of said tumbler, said second position comprising a position where a portion of said curved surface of said tumbler protrudes out from said housing; and said second end of said tumbler configured to be manually actuated to actuate said tumbler out from said second position, to thereby permit said biasing into said first position, after said actuation ends; and wherein when said tumbler is in said first position, said bearing surface of said tumbler is positioned to limit movement of the sash member between the closed position and the partially opened position; and wherein when said tumbler is in said second position, said tumbler is positioned to permit further movement of the sash member to the full-open position, by contact of the sash member with said curved surface to thereby cause pivotal movement of said tumbler into a partially retracted position, and to result in disengagement of said portion of said biasing member from said portion of said one or more contoured features of said housing, to thereafter permit said tumbler to be automatically biased back into said first position when the sash member is moved back to the partially opened position or back to the closed position or back to any position between the partially open position and the closed position, said partially retracted position comprising a position wherein a portion of said tumbler second end is positioned within said housing cavity. |
