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US 2017/0291281 A1Published application
Release Mechanism for Clamping Tools
OwnerGary TSUI, Weinam Liu +1inventors
InventorsGary TSUI, Weinam Liu, Shaosheng Chen
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Abstract
The present invention provides an improved release mechanism for clamping tools where problems of thread slipping due to worn out thread can be reduced by the structure of a plunger with a small diameter section and the engagement of the thread shaft is made more secure by the cam action on account of the shape of the plunger.
Claims4
An improved release mechanism for clamping tools, comprising:
- a cover plate with a housing on the top surface of the cover plate;
- a cylindrical plunger placed inside the housing;
- a horizontal helical spring placed inside a hollowed portion of the plunger;
- a threaded shaft for engaging with a half-threaded nut having a hole;
- and
- a protrusion extending out from a push button on the top portion of the half-threaded nut, wherein the threads are made on the upper half of the hole for engaging the threaded shaft, wherein the middle portion of the plunger is made to have a section of small diameter allowing the protrusion to be pushed downward in a normal position and allowing the protrusion to go upward into the small diameter section when the plunger is pushed inward to compress the horizontal helical spring, disengaging the threaded shaft wherein the cylindrical plunger moving horizontally will synchronously move the half-threaded nut vertically.
3 more elements
Dependencies are inferred from the claim text.