Hand tool

Patent metadata

Field	Value
Publication number	US-11639287-B2
Application number	US-202117199363-A
Country	US
Kind code	B2
Filing date	Mar 11, 2021
Priority date	Apr 1, 2020
Publication date	May 2, 2023
Grant date	May 2, 2023

Abstract

A prying head is provided in the present disclosure. The prying head, which is used in cooperation with a hand tool, includes a prying portion, a supporting portion and an assembling portion. The prying portion includes a ground-abutting surface and an article-abutting surface. The article-abutting surface is connected to the ground-abutting surface to form a sharp edge. The supporting portion is connected to the prying portion and includes a curved surface. The curved surface is connected to the ground-abutting surface and the article-abutting surface, so as to make an end of the supporting portion away from the sharp edge into a curved form. The assembling portion is connected to the supporting portion and includes a blind hole. The blind hole is recessed from an end of the assembling portion away from the sharp edge.

First claim

What is claimed is:

1. A hand tool assembly, comprising:
a prying head, comprising:
a prying portion, comprising:
a ground-abutting surface; and
an article-abutting surface, wherein the article-abutting surface is connected to the ground-abutting surface to form a sharp edge;

a supporting portion, which is connected to the prying portion, and the supporting portion comprising:
a curved surface connected to the ground-abutting surface and the article-abutting surface, so as to make an end of the supporting portion away from the sharp edge into a curved form; and
a through hole, wherein the through hole penetrates from a first side surface of the supporting portion to a second side surface of the supporting portion opposite to the first side surface; and

an assembling portion, which is connected to the supporting portion, and the assembling portion comprising:
a blind hole recessed from an end of the assembling portion away from the sharp edge; and

a wrench head comprising an engaging hole and an engaging end, wherein the engaging end protrudes from a side surface of the wrench head, and the engaging end is detachably engaged with the through hole; and
a handle comprising an inserting portion, wherein the inserting portion is detachably engaged with the engaging hole of the wrench head or the blind hole of the prying head;
wherein the handle is engaged with the wrench head along an assembling direction, the wrench head comprises a top surface and a bottom surface extending along the assembling direction, a length of a shortest chord of the curved surface of the prying head passing through a center of the through hole is larger than a longest distance between the top surface and the bottom surface, and the longest distance between the top surface and the bottom surface is a width of the wrench head.

2. The hand tool assembly of claim 1 , wherein the ground-abutting surface of the prying head is divided into a sudden-narrowing part and a gradual-narrowing part, the sudden-narrowing part is closer to the sharp edge of the prying head than the gradual-narrowing part, and a narrowing rate between the sudden-narrowing part and the article-abutting surface of the prying head is higher than a narrowing rate between the gradual-narrowing part and the article-abutting surface of the prying head.

3. The hand tool assembly of claim 1 , wherein a fulcrum is formed at a connection between the curved surface and the ground-abutting surface of the prying head.

4. The hand tool assembly of claim 1 , wherein the prying head further comprises:
at least one recessed cavity recessed from a side surface of the prying portion of the prying head.

5. The hand tool assembly of claim 1 , wherein the prying head further comprises:
at least one through cavity penetrating from a first side surface of the prying portion of the prying head to a second side surface of the prying portion opposite to the first side surface.

6. The hand tool assembly of claim 1 , wherein the prying head further comprises:
at least one recessed arc recessed from an edge of the article-abutting surface of the prying head.

Assignees

• Kabo Tool Co

Inventors

• Hsieh Chih-Ching

Classifications

• B25F1/006

  with percussion tool-heads or -blades, e.g. hammers, axes · CPC title

• B66F15/00 Primary

  Crowbars or levers · CPC title

• B25B23/0035

  Connection means between socket or screwdriver bit and tool · CPC title

• B25B27/02

  for connecting objects by press fit or detaching same {(B25D1/16 takes precedence)} · CPC title

• B25G3/02

  Socket, tang, or like fixings (B25G3/34 takes precedence) · CPC title