Chest Peak Contractor Exercise Machine Simultaneous Humerus Movement
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Solution Overview
Problem
Current chest exercise machines fail to effectively recruit all pectoral muscle fibers as they either do not adduct, medially rotate, or extend the humerus simultaneously, limiting muscle fiber engagement and contraction.
Innovation Solution
The Chest Peak Contractor exercise machine incorporates a platform, stanchions, telescoping poles, and armature handle assemblies to adduct, medially rotate, and extend the humerus, providing variable leverage and resistance at the point of peak contraction, allowing for both overhand and underhand grips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional chest exercise machines (bench press, dips, pec deck, flyes, arm wrestling simulator) are used, then specific muscle actions are performed, but all three humerus movements (adduction, medial rotation, extension) are not performed simultaneously, limiting pectoral muscle fiber engagement
Solution Approach 1:
The patent combines multiple independent exercise functions into a single integrated machine. The chest exercise machine simultaneously performs humerus adduction, medial rotation, and extension through a unified mechanical system with interconnected linkages, allowing all three movements to occur together in one exercise motion, thereby engaging all pectoral muscle fibers comprehensively
Solution Approach 2:
The patent employs dynamic linkages and movable components that allow the machine to adapt its resistance vector throughout the range of motion. The mechanical system dynamically adjusts the direction and magnitude of resistance forces to match the changing biomechanics of the humerus movements, providing optimal muscle engagement at each phase of the exercise
2Ease of operation
If cable crossover machine is used with non-straight line movement, then freedom of motion is improved, but the cable pivots at the pulley wheel instead of providing resistance in the new direction
Solution Approach 1:
The patent introduces an intermediary mechanical linkage system between the user's hands and the weight resistance. This linkage system acts as a mediator that translates movements in any direction into effective resistance forces along the optimal vector, ensuring that the cable provides resistance in the correct direction regardless of the user's movement path
Solution Approach 2:
The patent adds dimensional complexity to the resistance mechanism by using a multi-axis linkage system that converts two-dimensional hand movements into three-dimensional force vectors. This allows the cable to provide resistance in the appropriate direction even when the user moves through complex multi-planar trajectories
3Stability of the object's composition
If fixed resistance machines are used, then stability is improved, but variable leverage and full resistance at the point of peak contraction are not achieved
Solution Approach 1:
The patent employs dynamic resistance mechanisms that automatically adjust the resistance force based on the position and velocity of movement. The machine maintains structural stability through its rigid frame while the resistance system dynamically varies the force output to provide maximum resistance at the point of peak muscle contraction and reduced resistance during transition phases
Data Source
AI summary
A chest peak contractor preferably includes a platform, a pair of stanchions, a pair of vertically adjustable telescoping poles and a pair of armature hand assemblies. The pair of stanchions extend upward from opposing sides of the platform. Each stanchion is sized to receive one of the vertically adjustable telescoping poles. A top of each telescoping pole is terminated with a pivoting joint. Each armature device handle assembly is mounted to a top of the respective telescoping pole. Each armature handle assembly preferably includes a handle, a proximal axle support tube, an armature crossbeam, a distal hanger, a pair of backstop rails, a ring bolt backstop, an axle, and a weight holder. The handle is rotatably retained in the pivoting joint. An end of the handle is secured to the proximal axle support tube.