WO1996025908A1 - Massage system - Google Patents

Massage system Download PDF

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Publication number
WO1996025908A1
WO1996025908A1 PCT/GB1996/000391 GB9600391W WO9625908A1 WO 1996025908 A1 WO1996025908 A1 WO 1996025908A1 GB 9600391 W GB9600391 W GB 9600391W WO 9625908 A1 WO9625908 A1 WO 9625908A1
Authority
WO
WIPO (PCT)
Prior art keywords
massage
chair
shaft
massage system
pivot axis
Prior art date
Application number
PCT/GB1996/000391
Other languages
French (fr)
Inventor
Keith Mckenzie
Original Assignee
Niagara Manufacturing Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Niagara Manufacturing Ltd. filed Critical Niagara Manufacturing Ltd.
Priority to AU47267/96A priority Critical patent/AU4726796A/en
Publication of WO1996025908A1 publication Critical patent/WO1996025908A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • 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
    • A61H7/00—Devices for suction-kneading massage; Devices for massaging the skin by rubbing or brushing not otherwise provided for
    • A61H7/007—Kneading
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • 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
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/01—Constructive details
    • A61H2201/0119—Support for the device
    • A61H2201/0138—Support for the device incorporated in furniture
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • 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
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/01—Constructive details
    • A61H2201/0119—Support for the device
    • A61H2201/0138—Support for the device incorporated in furniture
    • A61H2201/0149—Seat or chair
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • 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
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/02—Characteristics of apparatus not provided for in the preceding codes heated or cooled
    • A61H2201/0207—Characteristics of apparatus not provided for in the preceding codes heated or cooled heated
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • 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
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/02—Characteristics of apparatus not provided for in the preceding codes heated or cooled
    • A61H2201/0221—Mechanism for heating or cooling
    • A61H2201/0228—Mechanism for heating or cooling heated by an electric resistance element
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • 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
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/14—Special force transmission means, i.e. between the driving means and the interface with the user
    • A61H2201/1418—Cam
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • 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
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/14—Special force transmission means, i.e. between the driving means and the interface with the user
    • A61H2201/1481—Special movement conversion means
    • A61H2201/149—Special movement conversion means rotation-linear or vice versa
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • 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
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/16—Physical interface with patient
    • A61H2201/1657—Movement of interface, i.e. force application means
    • A61H2201/1664—Movement of interface, i.e. force application means linear
    • A61H2201/1669—Movement of interface, i.e. force application means linear moving along the body in a reciprocating manner
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • 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
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/16—Physical interface with patient
    • A61H2201/1657—Movement of interface, i.e. force application means
    • A61H2201/1676—Pivoting
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • 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
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50—Control means thereof
    • A61H2201/5002—Means for controlling a set of similar massage devices acting in sequence at different locations on a patient
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • 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
    • A61H2203/00—Additional characteristics concerning the patient
    • A61H2203/04—Position of the patient
    • A61H2203/0425—Sitting on the buttocks
    • A61H2203/0431—Sitting on the buttocks in 90°/90°-position, like on a chair
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • 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
    • A61H2205/00—Devices for specific parts of the body
    • A61H2205/08—Trunk
    • A61H2205/081—Back

Definitions

  • the present invention relates generally to a massage system, and in particular to a massage system for massaging the back a user.
  • a massage unit In a conventional massage system, a massage unit is located in the back of a chair, and the unit can be reciprocated vertically along a vertical shaft.
  • Such an arrangement permits not only a dynamic massaging action, in which the massage unit is powered while being reciprocated along the vertical shaft, but it also enables a user to select a desired vertical position at which the massaging action is constantly applied.
  • a massage system for massaging the back of a user, the system comprising a massage unit, first means for causing the massage unit to move along an axis which is substantially vertical in use and second means for causing the massage unit additionally to move in a direction transverse to said axis.
  • Figure 1 is a front view of the preferred embodiment of the present invention.
  • Figure 2 is a plan view of the arrangement shown in Figure 1;
  • FIG 3 is a circuit diagram representing circuitry for use with the embodiment shown in Figures 1 and 2.
  • a massage unit 1 is mounted on a vertical shaft 2 in such a way that rotation of the shaft 2 causes the massage unit 1 to ride vertically along the shaft 2, in a direction dependent on the sense of rotation of the shaft 2.
  • the massage unit 1 is connected to the shaft 2 by means of a spider assembly and ball carriage (not shown) , the ball carriage body containing two bearing shells that, when held in the carriage body under a pre-set torque and at a precise angle, produce a helix.
  • the bearings are moved vertically along the shaft in a similar manner to a nut riding on a threaded bolt.
  • a lever mechanism fitted in the carriage body connects with a change-over cam that is fitted on the end of the shaft.
  • the cam then moves the bearing and changes the angle of the bearing helix, so as to produce a reverse action, making the carriage move in the opposite direction.
  • the motor driving the shaft 2 is operated by a user, so that the massage unit 1 can be moved vertically up and down the shaft in a continuous manner or, if the user so chooses, the massage unit 1 can be caused to operate at a fixed vertical location along the shaft 2.
  • the massage unit 1 In addition to the vertical movement of the massage unit 1 along the shaft 2, the massage unit 1 is also caused to pivot, in a substantially horizontal plane, about a vertical pivot axis 3.
  • the pivoting action is derived from a cam arrangement 4 which consists of two cams mounted respectively at the top and bottom of a cam shaft 5.
  • the cam arrangement 4 enables the massage unit 1 to effect either a kneading action, with movement in both the horizontal and vertical directions, or simply a horizontal massaging action.
  • the massage system includes a housing or frame 6 to which are attached all of the above-mentioned components.
  • the frame 6 is located within the back of a chair (not shown) upon which the user sits, and the frame 6 is attached rigidly to the back of the chair along the pivot axis 3.
  • the cam arrangement 4 is connected to the back of the chair and bears on the frame 6 in such a way that the frame 6 is caused to undergo the pivoting action in relation to the chair.
  • the frame 6 is a rectangular steel frame having the same internal size as the inner back of the chair.
  • the frame 6 is fitted into the inner back of the chair using suitable woodscrews.
  • the cam arrangement 4 operates in conjunction with three micro-switches (not shown) which enable the cam to be selectively stopped at three different positions, thus permitting massaging action, either at a constant height or at a continuously moving vertical position, to be effected in a position giving maximum pressure, ediur. pressure or minimum pressure.
  • the massage system is controlled by three electric motors (not shown) , respectively provided for the massage unit 1 itself, the movement of the shaft 2 and the movement of the cam arrangement 4.
  • the speed of these three motors is controlled by means of a triac/diac circuit, as shown in Figure 3.
  • the circuit comprises a triac 11 which consists of two thyristors connected in parallel but in opposition and which are controlled by the same gate.
  • the triac is effectively a "two-directional thyristor" which is triggered on both halves of each cycle of an a.c. input by either positive or negative gate pulses.
  • the circuit further comprises a diac 12 which is in effect two Zener diodes connected back-to- back and which conducts in either direction when the voltage across its associated capacitor C. reaches the breakdown potential associated with the respective Zener diode.
  • a current pulse from the capacitor C 1 then triggers the triac 11, and power is supplied to the load, i.e. the massage motors.
  • a variable resistor R A variable resistor R.
  • the capacitor C 1( and the setting of the variable resistor determines the conducting time of the triac 11. The greater the value of the resistance R 1 , the more slowly the capacitor C. charges, and the later within each half-cycle that the triac 11 is turned on, i.e. the slower the massage motor.
  • the speed control circuitry is provided on individual printed circuit boards which are fitted into a control panel in an arm of the chair.
  • the output of the speed control circuit is connected to a four-wave rectifier circuit located in a master junction box in the base of the chair.
  • the massage system is provided with a timer unit which enables the massage system to operate for up to one hour.
  • the time consists of a synchronous motor which drives a small gear box to effect a final drive of one revolution per hour.
  • the drive shaft of the timer is attached to the control knob and a micro-switch cam.
  • a single-pole two-way micro-switch is mounted in the timer unit, and the switch is connected in series with the input supply to the control panel, together with the timer's synchronous motor.
  • control knob When the control knob is turned to the "on” position the supply voltage to the timer is sent through the now-closed micro-switch to the synchronous motor and the chair's electronics. The synchronous motor is now powered and the gear box is in the "run” state.
  • the control knob may be set in any position for timer settings.
  • the chair is provided with two 45 watt heater pads, connected in parallel, and fitted into the lumbar and middle back areas of the chair. These heater pads are controlled by of means of a single-pole illuminated rocker switch located within the control panel.
  • the heater pads have an internal thermal cut-out and an overheat fuse fitted for safety reasons.

Abstract

A massage system includes a massage unit (1) arranged to be reciprocated vertically along a shaft (2). Additionally, the shaft (2), and hence the massage unit (1), is arranged to be pivoted about a pivot axis (3). Such an arrangement enables a choice of massage actions, by selectively enabling or disabling the vertical movement along the shaft (2) and the pivoting action about the pivot axis (3). The pivoting action (3) is controlled by means of a cam arrangement (4) consisting of two cams mounted respectively at the top and bottom of a cam shaft (5). The system is located within the back of chair, and the cam arrangement (4) is connected between the back of the chair and a frame (6) to which the shaft (2) is connected. The motors used in the massage system are controlled by a triac/diac circuit.

Description

MASSAGE SYSTEM The present invention relates generally to a massage system, and in particular to a massage system for massaging the back a user.
In a conventional massage system, a massage unit is located in the back of a chair, and the unit can be reciprocated vertically along a vertical shaft. Such an arrangement permits not only a dynamic massaging action, in which the massage unit is powered while being reciprocated along the vertical shaft, but it also enables a user to select a desired vertical position at which the massaging action is constantly applied.
However, even with such an arrangement, the massaging action is somewhat limited.
It would therefore be desirable to provide a massage system which overcomes this problem.
In accordance with the present invention there is provided a massage system for massaging the back of a user, the system comprising a massage unit, first means for causing the massage unit to move along an axis which is substantially vertical in use and second means for causing the massage unit additionally to move in a direction transverse to said axis.
A preferred embodiment of the present invention will now be described with reference to the accompanying drawings, wherein:
Figure 1 is a front view of the preferred embodiment of the present invention;
Figure 2 is a plan view of the arrangement shown in Figure 1; and
Figure 3 is a circuit diagram representing circuitry for use with the embodiment shown in Figures 1 and 2. Referring to Figures 1 and 2, a massage unit 1 is mounted on a vertical shaft 2 in such a way that rotation of the shaft 2 causes the massage unit 1 to ride vertically along the shaft 2, in a direction dependent on the sense of rotation of the shaft 2. The massage unit 1 is connected to the shaft 2 by means of a spider assembly and ball carriage (not shown) , the ball carriage body containing two bearing shells that, when held in the carriage body under a pre-set torque and at a precise angle, produce a helix. Thus, when the shaft rotates, the bearings are moved vertically along the shaft in a similar manner to a nut riding on a threaded bolt. Once the carriage has reached one of its two extreme positions, i.e. the top or the bottom of the shaft 2, a lever mechanism fitted in the carriage body connects with a change-over cam that is fitted on the end of the shaft. The cam then moves the bearing and changes the angle of the bearing helix, so as to produce a reverse action, making the carriage move in the opposite direction. The motor driving the shaft 2 is operated by a user, so that the massage unit 1 can be moved vertically up and down the shaft in a continuous manner or, if the user so chooses, the massage unit 1 can be caused to operate at a fixed vertical location along the shaft 2.
In addition to the vertical movement of the massage unit 1 along the shaft 2, the massage unit 1 is also caused to pivot, in a substantially horizontal plane, about a vertical pivot axis 3. The pivoting action is derived from a cam arrangement 4 which consists of two cams mounted respectively at the top and bottom of a cam shaft 5. Thus, in dependence on whether the user has selected a continuous vertical reciprocation of the massage unit 1 along the shaft 2, or a constant vertical position of the massage unit 1, the cam arrangement 4 enables the massage unit 1 to effect either a kneading action, with movement in both the horizontal and vertical directions, or simply a horizontal massaging action. The massage system includes a housing or frame 6 to which are attached all of the above-mentioned components.
The frame 6 is located within the back of a chair (not shown) upon which the user sits, and the frame 6 is attached rigidly to the back of the chair along the pivot axis 3.
The cam arrangement 4 is connected to the back of the chair and bears on the frame 6 in such a way that the frame 6 is caused to undergo the pivoting action in relation to the chair.
The frame 6 is a rectangular steel frame having the same internal size as the inner back of the chair. The frame 6 is fitted into the inner back of the chair using suitable woodscrews.
The cam arrangement 4 operates in conjunction with three micro-switches (not shown) which enable the cam to be selectively stopped at three different positions, thus permitting massaging action, either at a constant height or at a continuously moving vertical position, to be effected in a position giving maximum pressure, ediur. pressure or minimum pressure.
The massage system is controlled by three electric motors (not shown) , respectively provided for the massage unit 1 itself, the movement of the shaft 2 and the movement of the cam arrangement 4. The speed of these three motors is controlled by means of a triac/diac circuit, as shown in Figure 3.
The circuit comprises a triac 11 which consists of two thyristors connected in parallel but in opposition and which are controlled by the same gate. The triac is effectively a "two-directional thyristor" which is triggered on both halves of each cycle of an a.c. input by either positive or negative gate pulses. The circuit further comprises a diac 12 which is in effect two Zener diodes connected back-to- back and which conducts in either direction when the voltage across its associated capacitor C. reaches the breakdown potential associated with the respective Zener diode. A current pulse from the capacitor C1 then triggers the triac 11, and power is supplied to the load, i.e. the massage motors. A variable resistor R. is provided in series with the capacitor C1( and the setting of the variable resistor determines the conducting time of the triac 11. The greater the value of the resistance R1, the more slowly the capacitor C. charges, and the later within each half-cycle that the triac 11 is turned on, i.e. the slower the massage motor.
The speed control circuitry is provided on individual printed circuit boards which are fitted into a control panel in an arm of the chair. The output of the speed control circuit is connected to a four-wave rectifier circuit located in a master junction box in the base of the chair.
The massage system is provided with a timer unit which enables the massage system to operate for up to one hour.
The time consists of a synchronous motor which drives a small gear box to effect a final drive of one revolution per hour. The drive shaft of the timer is attached to the control knob and a micro-switch cam.
A single-pole two-way micro-switch is mounted in the timer unit, and the switch is connected in series with the input supply to the control panel, together with the timer's synchronous motor.
When the control knob is turned to the "on" position the supply voltage to the timer is sent through the now-closed micro-switch to the synchronous motor and the chair's electronics. The synchronous motor is now powered and the gear box is in the "run" state. The control knob may be set in any position for timer settings.
Once the synchronous motor drive revolves the switching cam to the "off" position, the micro-switch is de-activated, and this cuts the supply voltage to the chair electronics and the synchronous motor. All the electronics of the chair are now thus disconnected.
To reset the timer the control knob must be rotated to reset the micro-switch.
The chair is provided with two 45 watt heater pads, connected in parallel, and fitted into the lumbar and middle back areas of the chair. These heater pads are controlled by of means of a single-pole illuminated rocker switch located within the control panel. The heater pads have an internal thermal cut-out and an overheat fuse fitted for safety reasons.

Claims

CLAIMS:
1. A massage system for massaging the back of a user, the system comprising a massage unit, first means for causing the massage unit to move along an axis which is substantially vertical in use and second means for causing the massage unit additionally to move in a direction transverse to said axis.
2. A massage system as claimed in claim 1, wherein said first and second means are arranged to be operable simultaneously, so as to effect a kneading action.
3. A massage system as claimed in claim 1 or claim 2, wherein said first and second means are arranged to be operable independently.
4. A massage system as claimed in any preceding claim, further comprising means enabling a user to control the first means so as to select a desired height at which the massage unit operates.
5. A massage system as claimed in any preceding claim, further comprising one or more motors for operating the massage unit, the first means and the second means, wherein said one or more motors are controlled by a triac/diac circuit.
6. A massage system as claimed in any preceding claim, incorporated into the back of a chair, further comprising a control unit, for controlling the operation of the system, located within the arm of the chair.
7. A massage system as claimed in any preceding claim, wherein the transverse movement comprises a pivoting movement about a pivot axis.
8. A massage system as claimed in claim 7, wherein said second means comprises a cam arrangement located at a position remote from the pivot axis.
9. A massage system as claimed in 8, wherein said substantially vertical axis is located between said pivot axis said cam arrangement.
10. A massage system as claimed in any one of claims 7 to 9, incorporated into the back of a chair, the massage system comprising a frame which is pivotably attached to said chair along said pivot axis.
PCT/GB1996/000391 1995-02-22 1996-02-21 Massage system WO1996025908A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU47267/96A AU4726796A (en) 1995-02-22 1996-02-21 Massage system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9503540.8A GB9503540D0 (en) 1995-02-22 1995-02-22 Massage system
GB9503540.8 1995-02-22

Publications (1)

Publication Number Publication Date
WO1996025908A1 true WO1996025908A1 (en) 1996-08-29

Family

ID=10770064

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1996/000391 WO1996025908A1 (en) 1995-02-22 1996-02-21 Massage system

Country Status (3)

Country Link
AU (1) AU4726796A (en)
GB (1) GB9503540D0 (en)
WO (1) WO1996025908A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1481657A3 (en) * 2003-05-27 2006-03-22 Matsushita Electric Works, Ltd. Massaging device
US9889066B2 (en) 2013-07-01 2018-02-13 Good Fortune 5, Llc Massaging device having a heat sink

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2090744A (en) * 1980-12-29 1982-07-21 Matsushita Electric Works Ltd Massaging apparatus
US5233973A (en) * 1992-03-23 1993-08-10 General Motors Corporation Support structure for humans and massaging mechanism therefor
DE9312157U1 (en) * 1992-10-20 1993-10-28 Sds Licencia Ag Arbon Massager for use on the back of a seat

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2090744A (en) * 1980-12-29 1982-07-21 Matsushita Electric Works Ltd Massaging apparatus
US5233973A (en) * 1992-03-23 1993-08-10 General Motors Corporation Support structure for humans and massaging mechanism therefor
DE9312157U1 (en) * 1992-10-20 1993-10-28 Sds Licencia Ag Arbon Massager for use on the back of a seat

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1481657A3 (en) * 2003-05-27 2006-03-22 Matsushita Electric Works, Ltd. Massaging device
US7429251B2 (en) 2003-05-27 2008-09-30 Matsushita Electric Works, Ltd. Massaging device having controller to remove dead points during operation
US9889066B2 (en) 2013-07-01 2018-02-13 Good Fortune 5, Llc Massaging device having a heat sink
US11285075B2 (en) 2013-07-01 2022-03-29 Hyper Ice, Inc. Massage device having variable stroke length
US11857482B1 (en) 2013-07-01 2024-01-02 Hyperice Ip Subco, Llc Massage device having variable stroke length
US11938082B1 (en) 2013-07-01 2024-03-26 Hyperice Ip Subco, Llc Massage device having variable stroke length

Also Published As

Publication number Publication date
GB9503540D0 (en) 1995-04-12
AU4726796A (en) 1996-09-11

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