Matsushita Electric Works, Ltd.

Hikoyoshi Hara

Hirozo Imai

Takafumi Hamabe

Haruo Sugai

Masatoshi Dairin

Koichi Hashimoto

Akihide Sugawa

Kouichi Iwanaga

Fumihiro Nishio

Norio Yamada

Hironobu Sakaue

Kazumi Ookawa

Sataro Nasu

Youji Iguchi

A massaging chair is capable of assuring comfortable use, both in the sitting and lying positions. The massaging chair comprises a seat, a reclining backrest pivotally connected about a pivot axis to the seat so as to be movable between an upright position and a horizontal position with respect to the seat, and a massager is disposed on the side of the reclining backrest to give a massage to a back of a user resting on said seat. A pair of armrests are disposed on the opposite sides of said seat. The armrests are designed to extend arcuately substantially about the pivot axis of the backrest. With this arrangement, the user's arms on the armrests can be kept at a fixed comfortable angular relationship with respect to his or her body, irrespective of the varying angles of the reclining backrest on which the user rests with varying posture. Thus, the massaging chair assures enjoyment to the user of a massage in a comfortable posture irrespective of the angular position of the reclining backrest relative to the seat.

Massaging chair

A massaging apparatus has a capability of self-adjusting a massage strength for giving an optimum massaging effect for individual users. The apparatus includes a supporting frame on which a user rest and an applicator projecting from the supporting frame to be pressed against a user's body. The applicator is driven to move for applying a massaging force to the user's body. A pressure sensor is provided to monitor a pressure applied back to the applicator from the user's body as a counter-action of applying the massaging force to the user's body and to provide an output indicative of the monitored pressure. A strength-adjustor is included to vary a projecting amount of the applicator from the supporting frame and/or an operational speed of moving the applicator in order to adjust a massage strength applied to the user's body. The massaging apparatus is characterized to include an auto-controller which is connected to receive the output from the pressure sensor and actuates the strength-adjustor in order to increase and decrease the massage strength in such a manner as to follow the monitored pressure. Whereby, the apparatus is enabled to self-adjust the massage strength in proportion to a force at which the user has its back or desired portion pressed against the applicator.

Massaging apparatus having self-adjusting constant strength and

A rocking massage chair wherein massaging wheel elements and their drive mechanism are disposed in backrest part of the chair while a motor for driving an operating shaft of the drive mechanism is disposed in seating part of the chair, whereby the relatively heavy motor is located on forward side of a rocking center of the chair so as to keep the center of gravity of the chair always on the forward side and thus to prevent the chair from overturning rearward.

Rocking massage chair

A speed reducer device having a rotatably driven input shaft, a plurality of elongated planetary rollers disposed around the axis of the rotatably driven input shaft, a plurality of cylindrical output connection rings coaxial with the input shaft and within which the planetary rollers are positioned, and means to press the rotatably driven input shaft, the planetary rollers, and the cylindrical output connection rings together so that when the input shaft is rotated, the planetary rollers and the connection rings rotate without slipping. Each planetary roller is formed from first and second coaxial integral rollers which revolve and rotate within the space defined by the rotatably driven input shaft and the cylindrical output connection rings. The output connection rings comprise first and second output connection rings, wherein the first and second rollers rotate and revolve within the first and second output connection rings, respectively. The pressing means is adjustable to press either the first output connection ring, the first roller, and the input shaft together or the second connection ring and the second roller together, whereby the rotation of the input shaft causes the planetary rollers and either the first or second connection rings respectively to rotate.

Friction drive planetary roller type speed reducer

Speed reducer

An electric shaver has a housing which contains a motor. An inner blade support is mounted for rotation on the motor at one end of the housing, and an outer blade on the housing covers the inner blade support. Inner blades on the inner blade support revolve and are urged by springs against the outer blade, whereby hair extending through holes in the outer blade is cut by the inner blade. Openings through the inner blade support permit cut hair to drop therethrough, and the hair collects in a receptacle below the openings. Air flow caused by revolving the inner blade and other members on the inner blade support blows through the openings then near the receptacle to move hair from between the inner blade and the outer blade to the receptacle. The air flow then continues out of the housing through exhaust openings in the periphery of the outer blade. The air flowing from the openings is divided into two subcurrents flowing in two paths, a first path through the lower region of the area below the inner blade support and the second path through the upper region of the area below the inner blade support to decrease the volume and velocity of the air flow passing near the receptacle for preventing the air flow from moving hair from the receptacle out of the exhaust openings. A chamber is formed on the top surface of the inner blade support about each opening to trap cut hair there so that most hair will be directed through the openings. Arcuate slots near the edge of the inner blade support direct undesired centrifugal air flow downward and allow hair on the top of the support to fall to the receptacle. A rib that forms the forward wall of each chamber and each inner blade extend at angles to radii on the inner blade support intersecting the rib and the blade respectively to decrease air flow outward along the inner blade support.

Electric shaver having improved hair disposal system

Electric shaver of battery powered and washable type having a watertight housing structure. A battery covering detachably mounted to housing bottom opening for holding batteries inside the housing includes a lock and seal which are activated, responsive to the covering's mounting operation, respectively in directions transversing the housing axis to lock the covering to the housing interior wall and in the housing axial directions to achieve uniform abuttment of the covering to the interior wall for clamping therebetween a watertight ring seal. At the housing head where shaving blade assembly is coupled to rotary shaft of electric motor, the shaft is projected out of an axial cylinder of motor mounting member through a double-lip shape bushing watertightly sealing around the shaft with both axial end and outer peripheral projections compressively deformed by inward flange and inner periphery of the axial cylinder and motor shaft bearing so as to maintain a proper sealing pressure about the shaft, while allowing water passed through cut-hair reservoir between the motor and the blade assembly with side wall apertures of the reservoir closable by a shutter ring slidably fitted therearound, and in a housing side wall a reed-switch inside the housing is controlled over the side wall by a magnet carried by a handle slidably fitted outside the wall.

Growing community of inventors

Shijonawate, Japan

Hikoyoshi Hara