Quick release device for releasing screw bit from socket

• US 7,131,358 B2
• Filed: 01/10/2006
• Issued: 11/07/2006
• Est. Priority Date: 08/04/2004
• Status: Active Grant

• Current Assignee: Chih-Ching Hsien
• Original Assignee: Chih-Ching Hsien
• Inventors: Hsien, Chih-Ching
• Primary Examiner(s): MEISLIN, DEBRA S
• Application Number:
  US11/328,124
• Publication Number:
  US 20060107802A1
• Time in Patent Office: 301 Days
• Field of Search: 81437-439, 811/241, 811/243, 811/247, 811/778.5, 811/25, 179/23.1, 179/155, 279/23.1, 279/155
• US Class Current: 81/438
• CPC Class Codes: B25B 23/0035 Connection means between socket or screwdriver bit and tool
• CPC Class Codes: B25B 23/0057 Socket or nut ejector means
• CPC Class Codes: Y10T 279/3481 Tool or workpiece ejector

Abstract

A quick release bit socket assembly includes a socket and a screw bit is removably inserted in a first recess in a first end of the socket. A second recess is defined in a second end of the socket and a passage is in communication between the first and second recesses. A push rod includes a head and a shank which extends through the first recess, the passage and is inserted in the second recess. A spring is mounted to the shank and biased between the head and an inside of the first recess. The screw bit can be quickly pushed out from the second passage by pushing the push rod toward the screw bit.

Claims

1. A quick release bit socket assembly comprising:

a socket having a first recess defined in a first end thereof, a second recess defined in a second end of the socket and a passage being in communication between the first and second recesses;

a push rod including a head and a shank connected to the head, a spring mounted to the shank which extends through the first recess, the passage and is inserted in the second recess, the spring biased between the head and a inside of the first recess;

a positioning device being a U-shaped strip which includes two legs and a connection portion through connected between the two legs, a hole defined through the connection portion and the shank of the push rod movably extending through the hole in the connection portion, a C-shaped clip engaged with a groove defined in an outer surface of a distal end of the shank, the C-shaped clip being clamped between the connection portion of the U-shaped strip and the distal end of the shank, the two legs each having an inward portion, and

a screw bit removably inserted in the second recess and being clamped by the inward portions of the two legs of the positioning device in the second recess, the screw bit being pushed out from the second recess when the push rod is pushed toward the screw bit.

2. The assembly as claimed in claim 1, wherein the first end of the socket includes a toothed outer surface.