Replacement assembly of handle tool

• US 7,467,575 B2
• Filed: 12/26/2006
• Issued: 12/23/2008
• Est. Priority Date: 12/26/2006
• Status: Active Grant

• Current Assignee: Jin-Tsai Lai
• Original Assignee: Jin-Tsai Lai
• Inventors: Lai, Jin-Tsai
• Primary Examiner(s): Thomas; David B
• Application Number:
  US11/645,342
• Publication Number:
  US 20080148909A1
• Time in Patent Office: 728 Days
• Field of Search: 811/771, 811/772, 811/778.5
• US Class Current: 81/177.1
• CPC Class Codes: B25B 15/02 operated by rotating the handle
• CPC Class Codes: B25B 23/0042 Connection means between screwdriver handle and screwdriver shaft
• CPC Class Codes: B25G 3/04 with detachable or separate socket pieces B25G3/12 takes precedence
• CPC Class Codes: B25G 3/18 comprising catches or pawls

Abstract

A replacement assembly of a handle tool comprises a handle having an axial receiving hole; an adjusting ring; the adjusting ring being formed with a stop block; an driving head having an annular recess; a retaining cylinder installed at one end of the receiving hole for confining the adjusting ring; the retaining cylinder having a positioning hole for receiving the driving head; the retaining cylinder having at least one through hole which is communicated to the positioning hole. The stop block enters into the annular recess of the shaft from the through hole of the retaining cylinder. The retaining cylinder has a large head portion and a small waist; and the adjusting ring is engaged to the waist and is confined by the head portion to be combined with the handle.

Claims

1. A replacement assembly of a handle tool comprising:

a handle having an axial receiving hole;

an adjusting ring;

the adjusting ring being formed with a stop block;

a driving head;

the driving head having an annular recess;

a retaining cylinder installed at one end of the receiving hole for confining the adjusting ring;

the retaining cylinder having a positioning hole for receiving the driving head;

the retaining cylinder having at least one through hole which is communicated to the positioning hole;

wherein the stop block enters into the annular recess of the driving head from the through hole of the retaining cylinder.

2. The replacement assembly of a handle tool as claimed in claim 1, wherein the retaining cylinder has a large head portion and a small waist;

and the through hole being formed in the waist;

the adjusting ring is engaged to the waist and is confined by the head portion to be combined with the handle.

3. The replacement assembly of a handle tool as claimed in claim 1, wherein the retaining cylinder has a protrusion at an axial direction thereof;

and the handle has a slot for positioning the protrusion.

4. The replacement assembly of a handle tool as claimed in claim 1, wherein the handle has a buckling block;

and the adjusting ring has a rib;

the buckling block and the rib serves for confining the adjusting ring to rotate in a predetermined range.

5. The replacement assembly of a handle tool as claimed in claim 1, wherein a bottom of the positioning hole has a regular polygonal shape;

and a distal end of the driving head has also a regular polygonal shape corresponding to that of the positioning hole.