公开(公告)号：US4805260A

公开(公告)日：1989-02-21

申请号：US914362

申请日：1986-10-02

Applicant: Arthur C. Tooth

Inventor： Arthur C. Tooth

IPC: B60B33/00 ,  F16B7/02 ,  F16B13/06 ,  B60B35/00

CPC classification number: F16B13/066 ,  B60B33/0002 ,  F16B7/025 ,  Y10S411/908 ,  Y10T16/199 ,  Y10T16/201 ,  Y10T16/211

Abstract: An expander device for anchoring in a hole to secure a castor to a part which forms the hole, comprises a conical expander engaged in a sleeve having a conical interior. The expander and the sleeve are mouldings of reinforced plastics material. The expander is screwed onto a coaxial bolt with a 3-start thread. The sleeve is axially slotted from either end, the slots from one end being angularly spaced from one another by 90.degree. as are the other slots with which they are assymetrical so that alternate major and minor sleeve portions are formed between adjacent slots. Deformation takes place predominantly in the minor portions as the sleeve is expanded by axial movement of the conical expander into the internal taper of the sleeve which is caused by rotation of the bolt.

Abstract translation: 用于锚固在孔中以将脚趾固定到形成孔的部分的膨胀器装置包括接合在具有锥形内部的套筒中的锥形膨胀器。 膨胀机和套筒是增强塑料材料的成型品。 膨胀机用三线螺纹拧紧到同轴螺栓上。 套筒从任一端轴向开槽，一端的槽彼此成角度地间隔开90°，其他槽与它们是不对称的，从而在相邻槽之间形成交替的主要和次要的套筒部分。 当套筒通过螺​​栓的旋转引起的锥形膨胀机轴向移动到套筒的内部锥形中时，变形主要发生在次要部分中。