Ladder Stabilizer with Adjustable Rollers for Window Access
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Solution Overview
Problem
Existing ladder stabilization devices face challenges in providing secure, adjustable, and removable attachment to ladders, especially when leaning against varied structures and surfaces, such as windows, roof edges, and corners, without causing damage or compromising safety.
Innovation Solution
A ladder stabilizer apparatus with removable attachment to ladder rungs, featuring clamps, a-frame extensions, and adjustable sleeves with rollers or contact devices, allowing for secure positioning on various surfaces without structure attachment, and enabling angular adjustment during use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a ladder is directly leaned against a structure, then the ladder can be simple in design, but it cannot provide stable support on varied surfaces such as windows, roof edges, and corners
Solution Approach 1:
The stabilizer apparatus is divided into multiple independent components including a V-shaped case, adjustable sleeves, contact devices (rollers or pads), and attachment mechanisms. Each component performs a specific function, allowing the system to adapt to various surfaces while keeping individual parts relatively simple.
Solution Approach 2:
The sleeves are made adjustable rather than fixed, allowing them to pivot and reposition contact devices to different angles and positions. This dynamic capability enables the stabilizer to conform to varied surfaces such as windows, corners, and roof edges, transforming a static ladder into an adaptable support system.
2Reliability
If attachment devices are added to stabilize the ladder, then stability improves, but the attachment and detachment process becomes time-consuming and complex
Solution Approach 1:
The attachment mechanism uses a cable-driven pulley system instead of complex mechanical fasteners. The cable runs through a pulley in the V-shaped case and connects to adjustment mechanisms on the sleeves, allowing for quick attachment and detachment while maintaining secure holding force.
Solution Approach 2:
The cable acts as a flexible element that transmits force throughout the attachment system. This flexible connection allows the rigid V-shaped case and sleeves to be easily attached to and detached from the ladder rungs while maintaining structural integrity during use.
3Reliability
If the ladder is positioned against a structure, then the ladder provides support, but adjustment during use is difficult and requires stopping work
Solution Approach 1:
The sleeves incorporate pivoting joints and adjustable mechanisms that allow the contact devices to be repositioned while the ladder is in use. Users can adjust the angle and position of the contact points against the structure without detaching the entire stabilizer apparatus, enabling continuous adaptation to different working positions.
Solution Approach 2:
The cable-pulley system acts as an intermediary mechanism between the user's adjustment actions and the contact devices. By pulling or releasing the cable, users can smoothly adjust the position of the sleeves and contact points without directly manipulating complex mechanical joints, facilitating easy adjustment during use.
4Adaptability or versatility
If contact devices are added to interface with various surfaces, then surface compatibility improves, but the apparatus weight increases
Solution Approach 1:
Instead of making the entire apparatus heavy-duty, the patent uses lightweight contact devices (rollers or pads) only at the specific points where surface contact is needed. The V-shaped case and sleeves use minimal material while maintaining structural integrity, concentrating strength only where required rather than throughout the entire apparatus.
Solution Approach 2:
The contact devices use thin, lightweight elements such as roller shells or padded surfaces that provide sufficient contact with various surfaces without adding significant weight. These thin-film contact surfaces can conform to different geometries (windows, corners, edges) while remaining lightweight.
Data Source
AI summary
The ladder stabilizer apparatus provides for removable attachment to two rungs of a ladder. The case provides pivoting sleeves that may be indirectly or directly controlled by the apparatus crank, whereby either the sleeves or the sleeves with arms with optional vertical rollers are moved toward and away from the ladder. Rollers are provided for a given surface contact with the apparatus. Movement of the sleeves and the sleeves with arms provides for the contact devices to be positioned partially around a structure or object corner, within a corner, or any position between. The contact devices may be positioned outside boundaries of a window, for example, to provide a user best access to a window or other area that is not designed to have a ladder rested against it. The apparatus may be adjusted while in use.