Flowable Weighted Exercise Device with Dynamic Inertial Resistance
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Solution Overview
Problem
Conventional weight training devices fail to effectively engage core muscles and generate dynamic movement, leading to limited muscle activation and potential injury due to high-impact forces and component failure.
Innovation Solution
A weighted exercise device with a hollow body containing flowable weighted material, such as spherical metal pellets, and a lubricating oil, which allows for secure and dynamic movement, utilizing retractable locking pins and a handle system to manage large forces and prevent accidental release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional static weight lifting is used, then muscle strength can be built, but core muscles are not fully activated and the range of movement is limited
Solution Approach 1:
The patent applies the dynamics principle by replacing static weights with a flowable weighted material contained in a movable housing. The housing can rotate and move dynamically during exercise, allowing the weight distribution to change continuously. This enables a wider range of motion and engages core muscles for stabilization, while the fluid nature of the weighted material provides smooth, controlled resistance throughout the movement arc.
2Adaptability or versatility
If inertial training devices with movable weight elements are used, then dynamic movement and muscle stretching are achieved, but jerky high impact forces cause muscle strain or joint injury
Solution Approach 1:
The patent applies hydraulics by using a flowable weighted material (liquid or viscous fluid) instead of solid inertial weights. The fluid's viscosity and continuous flow characteristics dampen impact forces and eliminate jerky movements. When the housing changes direction, the fluid gradually shifts and redistributes, providing smooth resistance that prevents sudden impact loads on muscles and joints while maintaining dynamic movement capability.
Solution Approach 2:
The patent applies parameter changes by utilizing the variable density and viscosity properties of the flowable weighted material. The material's flow characteristics can be selected to match the desired exercise intensity and speed. This allows the resistance to adapt continuously during movement, providing controlled force transmission that prevents harmful impact peaks while maintaining effective training stimulus.
3Force
If inertial training devices generate high forces, then muscle activation is improved, but rattle, loosening or failure of components occurs
Solution Approach 1:
The patent applies hydraulics by using a flowable weighted material that provides inherently damped force transmission. The viscous fluid absorbs and distributes forces evenly throughout the housing structure, preventing concentrated stress peaks that cause component failure. The continuous fluid medium eliminates rattling and loosening by maintaining constant contact and pressure distribution across all internal components during high-force exercise movements.
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 device provides enhanced muscle activation by engaging core muscles through a wider range of motion, reducing the risk of injury and component failure, while maintaining secure handling and preventing accidental release.
Implementation Method 1
the housing having a longitudinal axis and longitudinally opposed end sections... a movable, dynamic weight element that moves relative to the main body of the device during operation. As such, when the direction of movement of the device is changed the inertial weight element continues moving in the initial direction under its own momentum
Implementation Method 2
The flowable weighted material comprises spherical metal pellets and a lubricating oil
Data Source
AI summary
A weighted exercise apparatus having a body section containing a flowable weighted material movable within the housing. The housing has a longitudinal axis and longitudinally opposed end sections. A connection socket is located at each end section. A pair of handle members correspond to the connection sockets, having a connection end received within an open end of the corresponding connection socket. Each handle member includes at least one radially extending retractable locking pin and a radially extending rigid projection. The corresponding socket includes a channel rotationally receiving the projection and at least one aperture to receive the at least one locking pin. The projection and at least one locking pin are arranged such that when the locking pin is aligned with and received within the aperture the projection is received and longitudinally restrained within channel providing a secure yet easily releasable method of rotationally locking the handle relative to socket.