Rivet-nut tool with a fixing hole

• US 5,771,738 A
• Filed: 08/12/1997
• Issued: 06/30/1998
• Est. Priority Date: 12/26/1996
• Status: Expired due to Term

• Current Assignee: Yung-Chang Ko
• Original Assignee: Yung-Chang Ko
• Inventors: Ko, Yung-Chang
• Primary Examiner(s): JONES, DAVID B
• Application Number:
  US08/909,701
• Time in Patent Office: 322 Days
• Field of Search: 72/114, 72/391.8, 29/243.526, 29/243.527
• US Class Current: 72/391.8
• CPC Class Codes: B25B 27/0007 Tools for fixing internally screw-threaded tubular fasteners
• CPC Class Codes: Y10T 29/53752 having rotary drive mechanism
• CPC Class Codes: Y10T 29/53757 having allochiral actuating handles

Abstract

A rivet-nut tool has a through hole defined in a collet case and a slot defined in a positioning seat, a pin extending into the through hole and the slot is able to retain the rotary mandrel and the positioning seat in a fixed position relative to the body of the rivet-nut tool, so that when a rivet nut is jammed onto the rotary mandrel, the rotary mandrel is able to disengage from the jammed rivet nut easily also convenient to change different sizes of rotary mandrel simply by using a wrench tool.

Claims

1. A hand rivet-nut tool comprising a body, a pair of handles pivotally connected with the body, a block respectively and pivotally connected with each of the pair of handles via a pair of links, a drill unit securely connected with the block and extending outward therefrom, a sphere detachably connected with a distal end of the drill unit, a hollow collet case threadingly connected with the body, a hollow nosepiece detachably connected with the collet case via a mating between outer threads of the nosepiece and inner threads of the collet case, a lock nut threadingly connected to an outer periphery of the nosepiece and a rotary mandrel securely connected with a first end of a positioning seat and extending outward from the nosepiece;

wherein the improvements are;

said rotary mandrel is freely rotatable relative to said body and a slot is defined therein;

said collet case has a through hole defined therein for alignment with said slot, such that a pin is able to extend into said through hole and said slot to retain said rotary mandrel and said positioning seat in a fixed position with the body of the hand rivet-nut tool.