Patent No. US11172733 (titled "Shoe") was filed by Baker Scott Bradley on Nov 15, 2018.
’733 is related to the field of footwear, specifically shoes designed for ease of use, particularly for individuals with disabilities or limited mobility. Conventional shoes often require significant dexterity and flexibility to put on, posing a challenge for those with conditions like paralysis or muscular weakness in their feet. This can lead to discomfort, circulatory problems, and potential injury due to toes being cramped or bent during the insertion process.
The underlying idea behind ’733 is to provide a shoe with a large, easily accessible opening that allows the foot to be inserted without requiring the toes to be flexed or manipulated. This is achieved by incorporating a zipper fastener that runs along the side and front of the shoe, allowing a significant portion of the upper to be folded back, exposing the sole and creating an unobstructed pathway for the foot to slide in. The design facilitates a more natural and comfortable foot placement, minimizing the risk of injury or discomfort.
The claims of ’733 focus on a shoe comprising a sole, a top member defining a space for receiving a foot, and a single continuous zipper fastener . This fastener extends from a starting point on the lateral side of the ankle opening, traverses down towards the connection area between the top member and the sole at the front of the shoe, and then continues along the medial side towards a termination point. The zipper's configuration allows a portion of the top member to fold back, providing easy access to the foot-receiving space.
In practice, the user opens the zipper, which causes a large flap of the shoe's upper to swing open. The foot is then placed on the sole, heel first, and slid into the shoe. Once the foot is properly positioned, the zipper is closed, securing the foot within the shoe. The zipper's path is carefully designed to allow for a smooth, continuous motion when opening and closing, and to create a wide opening that accommodates various foot sizes and shapes.
Unlike traditional shoes that require the foot to be forced through a relatively small opening, potentially causing the toes to curl or bend, ’733 allows the foot to be placed directly onto the sole in a natural, extended position. This is particularly beneficial for individuals with limited mobility or sensation in their feet, as it reduces the risk of injury and promotes better circulation. The design also allows for variations in shoe style, from sneakers to boots, while maintaining the core functionality of the easy-access opening .
In the early 2010s when ’733 was filed, shoes were typically manufactured with an opening positioned such that the foot must be inserted into the chamber or housing area for the foot through the opening toe first, followed by the remainder of the foot. At a time when systems commonly relied on laces, velcro straps, or elasticized portions around the opening to adjust the size of the opening, hardware or software constraints made it non-trivial to design a shoe that could be easily put on and removed, especially for individuals with disabilities or limited mobility.
The examiner approved the application because the amended claims included limitations not found in prior art. Specifically, the claims recite a shoe with a sole, a top member, an ankle opening, a lower connective edge, a fold-back portion, a fixed portion, a connection area, and a single continuous zipper fastener with a specific configuration. The examiner stated that the prior art of record would not be combinable to result in the claimed invention without substantial rearrangement and/or hindsight reasoning.
This patent includes 17 claims, with independent claims numbered 1, 7, 8, 11, 14, 15, and 16. The independent claims generally focus on a shoe design incorporating a sole, a top member defining a foot-receiving space, and a continuous zipper fastener to open and close the shoe. The dependent claims elaborate on specific features and configurations of the shoe, such as the inclusion of laces, the positioning of the top member for foot access, and the characteristics of the fixed and fold-back portions of the top member.
Definitions of key terms used in the patent claims.

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