公开(公告)号：US4484724A

公开(公告)日：1984-11-27

申请号：US452199

申请日：1982-12-22

Applicant: James Srackangast

Inventor： James Srackangast

IPC: F16L43/00 ,  F16L45/00 ,  E21D10/00

CPC classification number: F16L43/00 ,  F16L45/00

Abstract: Apparatus for forming inverts in manhole floors between angularly-related pipeline sections includes a set of a plurality of wedge-shaped forming elements each having a molding surface of corresponding compound longitudinal and transverse arcuate curvature, the forming elements being of respectively varying longitudinally arcuate extents and being adapted for longitudinal end-to-end joinder for producing a variety of angular curvatures. The forming apparatus is set-up in the manhole between the pipeline sections with the molding surface downwardly facing and concrete is poured about the apparatus, the concrete thereby setting in conformity with the apparatus' molding surface to create a curvilinear invert between the pipeline sections.

Abstract translation: 用于在与角度相关的管道部分之间的人孔地板中形成反转的装置包括一组多个楔形成形元件，每个楔形成形元件具有相应的复合纵向和横向弧形曲率的成型表面，所述成形元件分别变化为纵向弧形范围， 适于纵向端对端连接以产生各种角度曲率。 成形装置安装在管道部分之间的人孔中，其中模制表面向下并且混凝土在装置周围倾倒，混凝土由此根据装置的模制表面设置，以在管道部分之间形成曲线的反转。

公开(公告)号：US20050173612A1

公开(公告)日：2005-08-11

申请号：US10772559

申请日：2004-02-05

Applicant: James Srackangast

Inventor： James Srackangast

IPC: B28B7/16 ,  B28B7/28

CPC classification number: B28B7/28 ,  B28B7/002 ,  Y10S425/033

Abstract: An improved method and apparatus for attaching a hole former to a mold assembly for use in the formation of cast materials such as concrete and the like. The apparatus comprises a hole former assembly attached to a bracket. The bracket is held in a stationary position by a magnet assembly that is remotely located from the hole former. The magnet assembly is comprised of a plurality of magnets encased in a metal casing. An expendable blister pack can be provided to fit on the outside of the casing to facilitate removal of the magnetic assembly from the cast member.

Abstract translation: 一种用于将孔形成器附接到模具组件以用于形成诸如混凝土等的铸造材料的改进的方法和装置。 该装置包括附接到托架的孔形成器组件。 支架通过位于远离成孔器的磁体组件保持在静止位置。 磁体组件包括多个被包围在金属外壳中的磁体。 可以提供消耗性泡罩包装以装配在外壳的外部，以便于从铸件中去除磁性组件。