Skin massager

What is this patent about?

’216 is related to the field of handheld skin care devices, specifically those designed to enhance the absorption of topical creams and improve skin elasticity through mechanical stimulation. Traditional methods often rely on manual rubbing, which lacks the depth of penetration required to stimulate the dermis and subcutaneous layers effectively. This invention addresses the need for a motorized solution that provides consistent physical tapping to relax muscles and boost metabolism.

The underlying idea behind ’216 is the conversion of high-speed rotational energy from a motor into a controlled, vertical tapping motion using a mechanical cam-and-guide system. By decoupling the rotation of the motor from the movement of the massage head, the device can deliver rapid physical impacts to the skin surface. This mechanical transformation is designed to provide deep tissue stimulation while protecting the internal motor from the mechanical resistance encountered when the device is pressed firmly against the body.

The claims of ’216 focus on a specific structural arrangement within a cylindrical housing where a rotating member and a reciprocating member interact via a spiral interface. The motor’s shaft directly drives the rotating member, which features a spiral groove on its inner surface. A guide protrusion on the reciprocating member sits within this groove, while a separate vertical guide fixed to the outer body prevents the reciprocating member from spinning. This forced constraint ensures that as the motor turns, the massage head is driven in a strictly linear, up-and-down motion.

In practice, the device utilizes a tapping head molded from rubber and populated with irregular stimulus bosses to mimic the varied pressure of a manual massage. The internal geometry is critical: the vertical guide acts as a mechanical lock that translates the circular path of the spiral groove into vertical displacement. This allows the device to maintain a high frequency of impact, which is more effective for muscle relaxation and metabolic activation than simple vibration or surface rubbing.

This approach differentiates itself from prior art by solving the problem of motor overload. In many basic massagers, the massage head is directly linked to the drive system such that excessive pressure from the user can stall the motor and cause electrical failure. By using the spiral-to-linear conversion and vertical guide rails, the ’216 design provides a more robust mechanical advantage that maintains consistent tapping performance even when significant force is applied to the skin.