Surgery – Truss – Perineal
Patent
1988-08-15
1989-07-11
Burr, Edgar S.
Surgery
Truss
Perineal
128 67, A61H 100
Patent
active
048461580
ABSTRACT:
In a hand type electric massage machine, a vibration head is connected through a coupling spring to a top end portion of a hand case, and an unbalance weight is rotatably mounted to a top end portion of a rotary shaft so that the center of gravity of a weight element is positioned on a line extending radially from a bearing of the rotary shaft. The weight element is fixed to a part of the periphery of a lower end portion of a cylinder base having nearly covered cylindrical form including a disc portion and a skirt portion extending downward from the periphery of the disc portion. According to another feature of the present invention, the longitudinal ends of the vibration head are respectively provided with a curved surface extending in a vertical direction and with a curved profection surface having a smaller radius of curvature than that of the above-mentioned curved surface and lateral sides thereof include a spherical surface member having an elastic body and with a spherical surface member having a number of small projections, respectively. The size of the bearing can be varied and lubricating oil is not scattered, and the massage machine is suitable for massage in various modes.
REFERENCES:
patent: 455567 (1891-07-01), Kraft
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patent: 3735757 (1973-05-01), MacFarland
patent: 4102334 (1978-07-01), Muchisky
patent: 4409967 (1983-10-01), Gueret
patent: 4604993 (1986-08-01), Moriwaki et al.
Burr Edgar S.
Pham Huong Q.
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