Adjustable Sash Window Stop With Spacers
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Solution Overview
Problem
Existing sliding sash window and door safety stops are not conducive for after-market installation and do not easily accommodate various window configurations, failing to effectively prevent accidental egress of small children.
Innovation Solution
A multi-walled housing with a pivoting tumbler and biasing member that can be attached to the master frame without requiring a cavity, allowing for adjustable installation on different window configurations and preventing sash travel that could lead to child egress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cavity is created in the sash window frame for installing the stop, then the stop can be integrated into the window structure, but the installation becomes complex and requires frame modification
Solution Approach 1:
The invention extracts the stop mechanism from the frame cavity and relocates it to the sash member itself. The stop is now an independent component that attaches to the sash without requiring any cavity or modification to the frame, thereby simplifying installation while maintaining functional integration.
Solution Approach 2:
The stop is divided into separate functional components: a stop member with a bearing surface, a mounting mechanism with fastening elements, and a positioning system. This segmentation allows the stop to be installed as a modular assembly on the sash member without requiring frame modification.
2Manufacturing precision
If the stop is designed for specific window configurations, then it can provide precise travel limitation, but it cannot be universally applied to different sash window types
Solution Approach 1:
The stop member is designed with adjustable positioning capabilities along the sash member. The bearing surface can be positioned at different locations to accommodate various sash travel requirements, and the mounting mechanism can be adjusted to fit different sash thicknesses and configurations, providing both precision and versatility.
Solution Approach 2:
The stop assembly is designed as a universal component that can be applied to multiple types of sash windows. The mounting mechanism includes adjustable elements that adapt to different sash dimensions, while the bearing surface geometry provides consistent travel limitation functionality across various window configurations.
3Reliability
If the stop protrudes outward to limit sash travel, then it effectively prevents child egress, but it increases the device complexity and may interfere with window operation
Solution Approach 1:
The stop member features a localized bearing surface that protrudes only enough to contact the sash at the precise travel limitation point. This minimal protrusion is positioned strategically to prevent child egress while maintaining clearance for normal window operation and ventilation functions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a versatile and effective means to limit sash travel, ensuring safety by allowing ventilation while preventing accidental egress, and can be installed on existing windows without modifying the frame.
Implementation Method 1
a biasing member, such as a spring, for biasing the tumbler to a positioned state
Data Source
AI summary
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.