公开(公告)号：US4045871A

公开(公告)日：1977-09-06

申请号：US696510

申请日：1976-06-16

申请人： John E. Nelson

发明人： John E. Nelson

IPC分类号： A61C7/10 ,  A61C7/00

CPC分类号： A61C7/10

摘要： Disclosed is a device useful by an orthodontist for expanding a human palate. It comprises a stationary body secured to an anchor tooth on one side of the palate and a movable block secured to an anchor tooth on the other side of the palate. A helical spring urges the two apart to expand the palate. A keeper holds them together until they are fixed in place by the orthodontist.

摘要翻译： 公开了一种由正牙医生用于扩大人的口感的装置。 它包括固定在上颚一侧上的锚定齿上的固定体，以及固定在腭另一侧上的锚定齿上的活动块。 螺旋弹簧促使两者分开扩展上颚。 守门员把他们放在一起，直到他们被牙齿矫正器固定到位。

公开(公告)号：US4017973A

公开(公告)日：1977-04-19

申请号：US696511

申请日：1976-06-16

申请人： John E. Nelson

发明人： John E. Nelson

IPC分类号： A61C7/00

CPC分类号： A61C7/006

摘要： Disclosed is a permanent magnet tooth straightener. Nuts are attached by bands to an anchor tooth and a mobile tooth. Screws are threaded into each nut and axially aligned. The screws are permanent magnets so that their adjacent ends form interacting magnet poles which may either attract or repell each other. As the position of the mobile tooth changes the screws may be rotated to adjust the magnetic force acting between the teeth.

摘要翻译： 公开了一种永磁齿矫直机。 螺母通过带附接到锚齿和移动齿。 螺丝拧入每个螺母并轴向对齐。 螺钉是永磁体，使得其相邻的端部形成相互作用的磁极，其可以吸引或互斥。 当移动齿的位置改变时，可以旋转螺钉以调节作用在齿之间的磁力。