KOPFSTUETZE FUER MEDIZINISCHEN BEHANDLUNGSSTUHL

A chair for human dental or medical treatment and having an improved adjustable headrest support. The chair features a flat curved linear strip member (13) which extends between the headrest (12) and the main frame of the chair. The strip member (13) is guided by at least one and preferably two pair...

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Bibliographic Details
Main Authors FUJIYAMA, KUNIO, YOSHIKAWA, NORIYUKI, OKAMOTO, KEI
Format Patent
LanguageEnglish
German
Published 15.06.1990
Edition5
Subjects
BEDS
CHAIRS
CHAIRS FOR DENTISTRY
COFFEE MILLS
DOMESTIC ARTICLES OR APPLIANCES
FUNERAL DEVICES
FURNITURE
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
OPERATING TABLES OR CHAIRS
SOFAS
SPICE MILLS
SUCTION CLEANERS IN GENERAL
TRANSPORT OR ACCOMODATION FOR PATIENTS
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Summary:A chair for human dental or medical treatment and having an improved adjustable headrest support. The chair features a flat curved linear strip member (13) which extends between the headrest (12) and the main frame of the chair. The strip member (13) is guided by at least one and preferably two pairs of opposed cylindrical guide rollers (16) which contiguously straddle the strip member (13) so as to guide the motion of the strip member (13) along its longitudinal axis, as it is displaced along its axis and towards or away from the frame, typically by a hydraulic mechanism (7, 7a). This makes possible vertical direction of movement of the strip member (13). The hydraulic mechanism (7, 7a) or two mechanisms in tandem (7, 7a, 6, 6a) are a pivoted floating mounting for the strip member (13) which facilitates ready adjustment of the headrest support relative to the main frame and seat of the chair. At least one tension spring (11, 15) is provided to produce smooth backdown of the piston plunger (6a, 7a) and piston head when hydraulic fluid pressure in the cylinder (6, 7) is reduced.
Bibliography:Application Number: AT19830105294T