发明名称 |
Tomograph for photographing entire jaws |
摘要 |
This disclosure relates to the improvement of a tomograph for photographing the entire jaws which is designed to make an X-ray photograph of a curved plane section of an object by changing the rotating output of a motor for driving a rotary arm by using an eccentric cam means to control a film feed speed by the rotary output thus change. This apparatus includes a tachogenerator for converting the rotating output of the rotary arm driving motor into an electric output, a voltage shunting means for shunting the output of the tachogenerator to three paths, a reference point correction circuit and a changeover resistance means, and is capable of providing a clear X-ray photograph of a patient in the range of adults to children without necessity to change the eccentric cams nor the position of the patient.
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申请公布号 |
US4430746(A) |
申请公布日期 |
1984.02.07 |
申请号 |
US19810276695 |
申请日期 |
1981.06.23 |
申请人 |
KABUSHIKI KAISHA MORITA SEISAKUSHO |
发明人 |
SUZUKI, MASAKAZU;IKEDA, TOSHIAKI;FURUICHI, SHUHEI |
分类号 |
A61B6/14;(IPC1-7):G03B41/16 |
主分类号 |
A61B6/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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