38results about How to "Fine adjustment range" patented technology

A speculum provides visual access to a body cavity, and such instrument is used by physicians for vaginal examination. The speculum comprises a handle having a frontal portion and a rear portion slidingly secured to the frontal portion. A blade angle positioner is pivotally connected by a pivot connection in a top end portion of the handle rear portion, whereby to angulate a top blade removably secured to a top blade connector anchor at a forward projecting end of the blade angle positioner. The handle frontal portion has a bottom blade connector anchor in a top forward end portion thereof. The top and bottom blades each have a connecting end provided with clamp connectors for removable engagement with a respective one of the top and bottom blade connector anchors. The blade angle positioner arrests the handle rear portion at a desired selected position by transfering a biasing force applied onto the blades when inserted into a body cavity and the blade connected to the blade angle positioner is in tension with cavity walls.

The invention relates to a medical or dental treatment chair (1) having a seat part (2), a back part (4), a carrier part (16) arranged on the back part (4), an intermediate lever (23) which with its one end is pivotably connected with the carrier part (16), a head support lever (24) which with its one end is pivotably connected to the other end of the intermediate lever (23) and carries a head support pad (21), and an intermediate lever adjustment motor (M3) which is effective between the carrier parts (16) and the intermediate lever (23). For the support function there is provided a head support lever adjustment motor (M4) which is effective between the intermediate lever (23) and the head support lever (27).

The invention discloses an automatic lifting type stirring device. The device comprises a bottom plate, a stand column, a stirrer, a lifting plate, a lifter, a first connecting rod, a second connecting rod, a first sliding block, a second sliding block and a third sliding block. The stand column and the second sliding block are each provided with a sliding groove, the stand column and the lifter are vertically installed on a base. The first sliding block, the second sliding block and the third sliding block are sequentially arranged in the sliding groove of the stand column from top to bottom, the second sliding block is further fixedly connected with the lifter, the lifting plate is horizontally installed on the stand column through the first sliding block, the stirrer is installed on the front side of the lifting plate, and one end of the first connecting rod and one end of the second connecting rod are hinged into the sliding groove of the second sliding block. The other end of the first connecting rod is hinged to the lower end face of the lifting plate, and the other end of the second connecting rod is hinged to the third sliding block. The device has the advantages that through the structural design of the connecting rod and the sliding blocks, the lifting plate can ascend and descend in a horizontal state, and the stirrer and the lifting plate synchronously and vertically ascend and descend, so that a stirring area in the vertical direction is finely adjusted.