Patent No. US11160722 (titled "Percussive massage device and method of use") on Feb 4, 2021. The application was issued on Nov 2, 2021.
’722 is related to the field of handheld percussive massage devices used for deep tissue therapy. Traditional massagers often lack the ergonomic flexibility required for a user to effectively reach various muscle groups on their own body, particularly the back and shoulders. Furthermore, these devices must manage significant mechanical stresses and vibrations generated by the high-frequency reciprocating motion necessary for therapeutic benefit.
The underlying idea behind ’722 is a multi-grip ergonomic architecture that utilizes a triangular handle geometry to provide a user with multiple leverage points and approach angles. By arranging three distinct handle portions around a central opening, the device allows the user to shift their grip depending on the target muscle group, effectively extending their reach and improving control. This structural innovation is paired with a drive train designed to convert high-speed motor rotation into a stable, linear percussive stroke while isolating mechanical noise from the user's hand.
The claims of ’722 focus on a housing construction where three handle portions cooperate to define a central handle opening, with the axes of these portions forming a triangular relationship. This specific geometry is claimed as a means to allow a user to grasp any of the three segments independently. The independent claims further specify that the exterior or interior edges of these handle portions, when extended, define a triangle that surrounds the central opening, housing the motor and a push rod assembly configured for reciprocating motion.
In practice, the invention functions by housing the heavy internal components—such as the battery, motor, and switch electronics—within the different segments of the triangular frame to balance the device's weight. A motor drives a pinion coupling assembly and a gearbox to translate rotary motion into a linear stroke. To ensure the device is comfortable during high-frequency operation, the drive train often includes elastomeric dampers and a counterweight system that offsets the inertial forces of the reciprocating head.
This approach differs from prior solutions that typically rely on a single 'pistol grip' or a straight wand design, which can be cumbersome and limit the angles at which a user can apply pressure. By employing the triangular grip and a specialized internal suspension, the ’722 patent provides a more versatile tool that allows for self-treatment of hard-to-reach areas while maintaining the high torque and amplitude required for effective percussive therapy.
In the late 2010s when ’722 was filed, handheld massage equipment was typically implemented using simple vibration motors or orbital mechanisms that provided high-frequency but low-amplitude surface stimulation. At a time when these systems commonly relied on fixed-handle geometries and rigid internal drive trains, achieving deep tissue penetration through high-force percussive strokes was technically difficult due to the significant mechanical stresses and vibrations transferred back to the user's hand. Furthermore, hardware constraints related to motor torque and battery discharge rates made it non-trivial to maintain consistent reciprocating linear motion under load within a portable, battery-powered form factor.
The disclosed invention represents a technical advancement through an architectural shift in handheld percussive therapy design, specifically by integrating a multi-axis triangular handle structure with a high-amplitude reciprocating drive system. By arranging three distinct handle portions to define a central opening, the device enables a capability for varied ergonomic gripping positions that allow a user to apply significant manual pressure while maintaining mechanical leverage. This structural solution is coupled with a specialized gearbox and counterweight assembly that converts rotary motor motion into linear percussion at specific frequency and amplitude ranges (15 Hz to 100 Hz and 0.15 to 1.0 inches). This integration overcomes the technical constraint of excessive vibration feedback and device instability, achieving a technical effect of deep muscle stimulation through controlled, high-force reciprocation that remains manageable for the operator.
This patent contains a total of 20 claims, with claims 1, 6, 11, and 17 serving as the independent claims. The independent claims focus on the structural configuration of a percussive massage device featuring a housing with three distinct handle portions that form a triangular opening, allowing a user to grip any of the three sides to operate the internal motor and reciprocating push rod assembly. The dependent claims serve to further specify the geometry and orientation of the handle portions, the inclusion of a head portion in the housing, and the specific alignment of the interior and exterior edges that define the handle opening.
Definitions of key terms used in the patent claims.
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