# US 5,797,859 A · Massager for producing rotary/vibratory massage motion, using a single motor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,797,859 A - Document ID: US5797859A - Status: Granted - Kind: A - Application number: 08/781,544 - Filed: 1997-01-09 - Granted: 1998-08-25 - Earliest claimed: 1997-01-09 - Assignees: Conair Corporation - Inventors: Barry V. Prehodka - Web page: https://patentgrep.com/patent/US5797859A ## CPC - A61H 23/0254: {with rotary motor} - A61H 7/004: {power-driven, e.g. electrical} - A61H 2201/1215: Rotary drive - A61H 2201/1445: Overrunning clutches; One-way clutches - A61H 2201/164: Feet or leg, e.g. pedal - A61H 2205/12: Feet - 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) ## Abstract A massager for producing rotary and/or vibratory massage motion includes a base structure, a support plate with a contact surface and a mounting surface, and resilient mounts for coupling the support plate to the base structure. At least one rotator structure is associated with the contact surface of the support plate and includes massage members extending therefrom. A motor is attached to the mounting surface of the support plate and manifests a first direction rotary output and a counter direction rotary output. A gear structure couples the motor to the at least one rotator structure to cause rotary movement thereof, upon actuation of the motor. The massager includes an eccentric weight and a clutch system for driveably coupling the eccentric weight to the motor when the motor produces a first direction rotary output; and for decoupling the eccentric weight from the motor when the motor produces the counter-direction rotary output. In such manner, the single motor operates both the rotator structure and the eccentric weight and enables combined rotary/vibratory motion to be achieved. ## Claims ### Claim 1 A massager for producing rotary and/or vibratory massage action comprising: a base structure; a support plate with a contact surface and a mounting surface; means for resiliently mounting said support plate to said base structure; at least one rotator structure associated with said contact surface and having massage members extending therefrom; a motor attached to said mounting surface and manifesting a first rotary output and a counter rotary output; gear means attached to said mounting surface, for coupling said motor to said at least one rotator structure to cause a rotary movement thereof upon actuation of said motor; an eccentric weight; and clutch means for driveably coupling said eccentric weight to said motor when said motor produces said first rotary output and for decoupling said eccentric weight from said motor when said motor produces said counter rotary output. ### Claim 2 (depends on 1) The massager as recited in claim 1, wherein each of said massage members is mounted for independent rotary movement. ### Claim 3 (depends on 2) The massager as recited in claim 2, wherein said at least one rotator structure comprises: a cylindrical structure having plural apertures in a planar major end surface; plural spheres positioned within said cylindrical structure, each sphere extending through at least one of said plural apertures, each sphere mounted to rotate on a shaft; and support means for rotatably mounting each shaft within said cylindrical structure. ### Claim 4 (depends on 3) The massager as recited in claim 3, wherein said support means causes each said shaft to be positioned coincident with a radius of said cylindrical structure. ### Claim 5 (depends on 4) The massager as recited in claim 4, wherein said cylindrical structure extends though an aperture in said support plate so that each of said spheres extends above said support surface. ### Claim 6 (depends on 4) The massager as recited in claim 4, wherein some of said plural spheres exhibit a diameter different from others of said plural spheres so as to provide an enhanced massage action. ### Claim 7 (depends on 1) The massager as recited in claim 1, wherein both said eccentric weight and said clutch means are positioned on a shaft extending from said motor, said eccentric weight rotatably mounted on said shaft and having a shoulder, said clutch means further comprising: a slider engaged to rotate with said shaft and mounted for movement transverse to a long axis of said shaft, said slider having an engagement surface which engages said shoulder when said shaft is rotated by said first rotary output of said motor. ### Claim 8 (depends on 7) The massager as recited in claim 7, wherein said slider includes a cam surface which moves over said shoulder in a non-engaging manner when said shaft is rotated by said counter rotary output of said motor. ### Claim 9 (depends on 1) The massager as recited in claim 1, further comprising: a switch mounted on said base structure and positioned for actuation by a user's foot, said switch having one position which causes said motor to produce said first rotary output, and a second position which causes said motor to produce said counter rotary output. ### Claim 10 (depends on 8) The massager as recited in claim 8, further comprising: a switch mounted on said base structure and positioned for actuation by a user's foot, said switch having one position which causes said motor to produce said first rotary output, and a second position which causes said motor to produce said counter rotary output. ### Claim 11 (depends on 1) The massager as recited in claim 1, further comprising: heater means associated with said support plate for selectively applying heat to said support surface. ### Claim 12 (depends on 11) The massager as recited in claim 11, wherein said heater means comprises a heater wire affixed to said mounting surface of said support plate.