# US 10,945,915 B2 · Portable percussive massage device

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- Number: US 10,945,915 B2
- Document ID: US10945915B2
- Status: Granted
- Kind: B2
- Application number: 16/824,328
- Filed: 2020-03-19
- Published: 2020-11-12
- Granted: 2021-03-16
- Earliest claimed: 2019-05-07
- Assignees: Theragun, Inc.
- Applicants: Theragun, Inc.
- Inventors: Jason Wersland; Benjamin Nazarian; Jaime Sanchez Solana; Eduardo Merino
- Web page: https://patentgrep.com/patent/US10945915B2

## CPC

- A61H 1/006: {Apparatus for applying pressure or blows for compressive stressing of a part of the skeletal structure, e.g. for preventing or alleviating osteoporosis}
- A61H 23/006: {Percussion or tapping massage (hand percussion A61H23/06)}
- A61H 23/0263: {using rotating unbalanced masses}
- A61H 23/0254: {with rotary motor}
- A61H 2023/002: {having a percussion element combined with a passive spacer element for bearing against the skin}
- A61H 2201/0153: hand-held
- A61H 2201/0157: portable
- A61H 2201/1215: Rotary drive
- A61H 2201/1253: driven by a human being, e.g. hand driven
- A61H 2201/149: rotation-linear or vice versa
- A61H 2201/1635: Hand or arm, e.g. handle
- A61H 2201/1669: moving along the body in a reciprocating manner
- A61H 2201/1685: interchangeable
- A61H 2201/50: Control means thereof
- A61H 2201/5023: Interfaces to the user
- A61H 2201/5025: Activation means
- Y02E 60/10: Energy storage using batteries
- A61H: PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY (electrotherapy, magnetotherapy, radiation therapy or ultrasound therapy A61N)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A percussive massage device that includes a housing that defines a housing interior, a battery, a motor positioned in the housing, a switch for activating the motor, and a reciprocating shaft operatively connected to the motor and configured to reciprocate in response to activation of the motor. The reciprocating shaft includes a distal end that defines a reciprocation axis. The housing includes a first side portion and a second side portion that cooperate to define the housing interior and are defined on opposite sides of the reciprocation axis. The motor is positioned in the first side portion and the battery is positioned in the second side portion.

## Claims

### Claim 1

A percussive massage device comprising:
a housing that defines a housing interior, wherein the housing defines a thickness,
a width and a height,
a battery,
a motor positioned in the housing, wherein the motor includes a rotatable motor shaft that defines a motor axis,
a counterweight that rotates about the motor axis,
a switch for activating the motor, and
a reciprocating shaft operatively connected to the motor and configured to reciprocate in response to activation of the motor, wherein the reciprocating shaft includes a distal end that defines a reciprocation axis, wherein the reciprocation axis defines a thickness reciprocation plane that extends transversely through the thickness of the housing and divides the housing into first and second side portions, wherein the entire motor is positioned on a first side of the thickness reciprocation plane in the first side portion and the entire battery is positioned on a second side of the thickness reciprocation plane in the second side portion, wherein the motor axis extends perpendicular to the thickness reciprocation plane and extends through the battery, and wherein the first side portion is symmetrical to the second side portion except for any openings or ports defined in the housing.

### Claim 2 (depends on 1)

The percussive massage device of claim 1, wherein the housing defines a housing axis, and wherein the reciprocation axis and the housing axis are co-axial.

### Claim 3 (depends on 1)

The percussive massage device of claim 1, further comprising a motor mount bracket that includes a middle member having first and second opposite sides, wherein the motor is positioned on the first side of the middle member and the reciprocating shaft is positioned on the second side of the middle member.

### Claim 4 (depends on 3)

The percussive massage device of claim 3, wherein the middle member includes a shaft opening defined therein, wherein the motor includes a rotatable motor shaft extending therefrom that extends from the first side of the middle member, through the shaft opening and to the second side of the middle member, wherein the reciprocating shaft is operatively connected to the motor shaft.

### Claim 5 (depends on 4)

The percussive massage device of claim 4, wherein the housing includes first and second housing halves, wherein the motor mount bracket is secured to both of the first and second housing halves.

### Claim 6 (depends on 5)

The percussive massage device of claim 5, wherein the motor mount bracket is secured to the first housing half via an interference fit and to the second housing half via threaded fasteners.

### Claim 7 (depends on 6)

The percussive massage device of claim 6, wherein the interference fit comprises one of a tubular member and a securing post disposed on the housing and the other of the tubular member and the securing post disposed on the motor mount bracket, and wherein the securing post is received in the tubular member.

### Claim 8 (depends on 1)

The percussive massage device of claim 1, further comprising a bush assembly through which the reciprocating shaft reciprocates, wherein the bush assembly includes a bush and first and second dampening halves that are positioned on opposite sides of the bush and are positioned between the bush and the housing.

### Claim 9 (depends on 8)

The percussive massage device of claim 8, wherein the first and second dampening halves include securing protrusions extending outwardly therefrom that are received in securing openings defined in the housing.

### Claim 10 (depends on 1)

The percussive massage device of claim 1, wherein the reciprocation axis defines a width reciprocation plane that extends through the width of the housing to divide the housing into front and back portions, and wherein the width reciprocation plane is perpendicular to the thickness reciprocation plane.

### Claim 11

A percussive massage device comprising:
a housing that defines a housing interior and a housing axis, wherein the housing defines a thickness, a width and a height,
a battery,
a motor positioned in the housing, wherein the motor includes a rotatable motor shaft that defines a motor axis,
a counterweight that rotates about the motor axis,
a switch for activating the motor, and
a reciprocating shaft operatively connected to the motor and configured to reciprocate in response to activation of the motor, wherein the reciprocating shaft includes a distal end that defines a reciprocation axis, wherein the motor axis is perpendicular to the reciprocation axis and extends through the battery, wherein the reciprocation axis defines a thickness reciprocation plane that extends transversely through the thickness of the housing and divides the housing into first and second side portions, wherein the entire motor is positioned on a first side of the thickness reciprocation plane in the first side portion and the entire battery is positioned is positioned on a second side of the thickness reciprocation plane in the second side portion, wherein the first side portion is symmetrical to the second side portion except for any openings or ports defined in the housing, and wherein the reciprocation axis and the housing axis are co-axial.

### Claim 12 (depends on 11)

The percussive massage device of claim 11, further comprising a motor mount bracket that includes a middle member having first and second opposite sides, wherein the motor is positioned on the first side of the middle member and the reciprocating shaft is positioned on the second side of the middle member, wherein the middle member includes a shaft opening defined therein, wherein the motor shaft extend extends from the first side of the middle member, through the shaft opening and to the second side of the middle member, wherein the reciprocating shaft is operatively connected to the motor shaft.

### Claim 13 (depends on 12)

The percussive massage device of claim 12, wherein the housing includes first and second housing halves, wherein the motor mount bracket is secured to both of the first and second housing halves, wherein the motor mount bracket is secured to the first housing half via an interference fit and to the second housing half via threaded fasteners, wherein the interference fit comprises one of a tubular member and a securing post disposed on the housing and the other of the tubular member and the securing post disposed on the motor mount bracket, and wherein the securing post is received in the tubular member.

### Claim 14 (depends on 13)

The percussive massage device of claim 13, further comprising a bush assembly that includes a bush through which the reciprocating shaft reciprocates, wherein the bush assembly includes first and second dampening halves on opposite sides thereof that are positioned between the bush assembly and the housing, wherein the first and second dampening halves include securing protrusions extending outwardly therefrom that are received in securing openings defined in the housing.

### Claim 15

A method of using a percussive massage device that includes a housing that defines a housing interior, a battery, a motor having a rotatable motor shaft that defines a motor axis positioned in the housing, a counterweight that rotates about the motor axis, a switch for activating the motor, and a reciprocating shaft operatively connected to the motor and configured to reciprocate in response to activation of the motor, wherein the method comprises the steps of:
grasping the housing with a first hand having a palm, wherein the reciprocating shaft includes a distal end that defines a reciprocation axis, wherein the reciprocation axis defines a thickness reciprocation plane that extends transversely through the thickness of the housing and divides the housing into first and second side portions, wherein the entire motor is positioned on a first side of the thickness reciprocation plane in the first side portion and the entire battery is positioned on a second side of the thickness reciprocation plane in the second side portion, wherein the motor axis extends perpendicular to the thickness reciprocation plane and extends through the battery, and wherein the first side portion is symmetrical to the second side portion except for any openings or ports defined in the housing,
positioning the first hand such that the reciprocation axis extends through the palm, and
massaging a first body part with a massage attachment removably connected to the distal end of the reciprocating shaft.

### Claim 16 (depends on 15)

The percussive massage device of claim 15, wherein the housing defines a housing axis, and wherein the reciprocation axis and the housing axis are co-axial.