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US 6,474,920 B2Granted
Sandwich type expansion bolt
AssigneeShiney G&M Associated Co., LTD
InventorRichard F. S. Lin
Life of this patent
Estimating the term…
Abstract
An expansion bolt includes two symmetrical bolt halves. The bolt halves each includes an inner side, an outer side, a front face, a rear face, and outer threads are provided at the outer side for the mounting of a nut thereon. An insert block inserted in between the bolt halves after the bolt halves have been attached together and inserted into a hole on an object. A nut is threaded onto the outer threads of the bolt halves to secure the bolt halves to the hole of the object into which the bolt halves are inserted.
Claims4
An expansion bolt adapted to be inserted into an object, said expansion bolt comprising:
- a pair of symmetrical bolt halves, each of said bolt halves comprising an inner side, an outer side, a front face, and a rear face;
- an internally threaded nut;
- outer threads are provided on the outer side of each of said bolt halves, such that when the inner sides of said bolt halves are opposed to one another, the outer threads of the bolt halves receive said internally threaded nut to secure said bolt halves together;
- an insert block is secured between the inner sides of said bolt halves prior to attachment of the internally threaded nut, said insert block is shorter than the longitudinal length of said bolt halves;
- and
- said bolt halves comprising a securing means that physically blocks said insert block from coming out of said expansion bolt between the front faces of said bolt halves.
3 more elements
Dependencies are inferred from the claim text.