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US 2004/0172992 A1Published application
Screw lock
OwnerYung-Chen Huanginventor
Life of this patent
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Abstract
The present invention relates to a screw lock, wherein a core is provided in the interior of the body, a key hole formed to be a fork shape is provided in the center of the core in axle direction, and the screw holes have some pins respectively; a front end of the key corresponding to the key hole and the pins is designed to be a fork-like screw shank with many teeth. When the key is screwed into the key hole of the core, each of the teeth may raise a pin to the unlock position.
Claims3
A kind of screw lock, which comprises:
- a body;
- a core which can be mounted inside said body by rotation way, establishing with a key hole of three forks screw shape on position of whose axial center, and setting with a lot of pins which present radiate shape arrangement and extend into different positions of interior of key hole by uncertain length inside axle center;
- and
- a key, including a handle and three fork-like screw shank which is on front end of said handle, said key shank can tight airtight to screw into interior of said key hole, and on position where homologize to each pin on said key shank individually carving with a tooth of extending length of homologous said pin, making use of pushing each pin to a position where said core can be drove to rotate by said key.
1 more element
Dependencies are inferred from the claim text.