Portable Isometric Training Tool Strap Spool Mechanism
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Solution Overview
Problem
Conventional exercise methods, such as isotonic exercises, often fail to efficiently stimulate all muscle fiber types, leading to inadequate muscle growth and strength gains, while also increasing the risk of joint stress and injury.
Innovation Solution
A portable isometric training tool (PITT) that allows users to perform a variety of isometric exercises in different positions, utilizing a 19 ft long polyester strap with a load rating of 4000-6000 lbs, to engage all muscle fiber types with maximum effort and minimal joint stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional isotonic exercise methods are used, then muscle growth and strength gains can be achieved, but joint stress and injury risk increase significantly
Solution Approach 1:
The patent changes the fundamental parameter of exercise type from isotonic (dynamic movement) to isometric (static hold), thereby maintaining muscle strength development while eliminating joint stress associated with movement and acceleration
2Productivity
If conventional load bearing exercise through range of motion is performed, then muscle fibers are engaged, but intermediate/type 2 fibers are fatigued long before slow twitch and fast twitch fibers
Solution Approach 1:
The patent changes the exercise parameter from dynamic range of motion to static isometric hold at various angles, which allows all three muscle fiber types to be engaged simultaneously and maximally stimulated within a single exercise position, eliminating the sequential fatigue pattern of conventional exercise
3Strength
If multiple sets and repetitions of conventional exercise are performed, then optimal muscle growth and strength can be achieved, but time consumption and exercise complexity increase
Solution Approach 1:
The patent enables continuous isometric holding at each angle without the need to complete full ranges of motion or transition between multiple exercise types, maintaining maximal muscle fiber engagement throughout the exercise duration and significantly reducing total exercise time
Solution Approach 2:
The patent creates a universal exercise approach where a single isometric hold position can engage all muscle fiber types simultaneously, making the exercise method universally effective for all muscle groups and eliminating the need for multiple specialized exercise routines
4Strength
If heavy weights and objects are lifted and moved at varying speeds, then muscle strength can be developed, but the likelihood of muscle, tendon or ligament injury increases
Solution Approach 1:
The patent changes the exercise parameter from dynamic weight lifting with acceleration and deceleration to static isometric holding, thereby maintaining strength development benefits while eliminating the inertial forces and sudden movements that cause muscle, tendon, and ligament injuries
Data Source
AI summary
A hand-held unit that allows a user to perform, in a seated, kneeling, lying down or standing position, a variety of isometric exercises for the muscles of the trunk, upper body and lower body in 1.5 inch increments. The load is generated by the force initiated by the user and is transmitted through a 19 ft, 1.5 in wide “seatbelt grade” polyester strap with a load rating of 4000-6000 lb. The strap is folded in half and mounted to a spool that rotates when the locking pin that is mounted to the fixed outside wall is pulled and held by the user. The unit locks when the locking pin is released via spring loaded into a locking mechanism welded to the side of the spool. The looped strap can be adjusted to any needed length for a particular user and a particular exercise. The device adapts to right- or left-handed operation.