T-handle ratchet wrench

• US 6,898,998 B2
• Filed: 09/22/2003
• Issued: 05/31/2005
• Est. Priority Date: 11/29/2002
• Status: Expired due to Fees

• Current Assignee: Wen-Tsai Shyu
• Original Assignee: Wen-Tsai Shyu
• Inventors: Shyu, Wen-Tsai
• Primary Examiner(s): Meislin, Debra S.
• Application Number:
  US10/666,785
• Publication Number:
  US 20040103764A1
• Time in Patent Office: 617 Days
• Field of Search: 811775-1779, 81/60, 81/61, 81/631, 811/247, 811/243, 81/581, 81/584, 811/771, 811/772
• US Class Current: 81/63.1
• CPC Class Codes: B25B 13/461 with concentric driving and driven member
• CPC Class Codes: B25G 1/005 for screwdrivers, wrenches or spanners with additional levers, e.g. for increasing torque

Abstract

The invention relates to a T-handle ratchet wrench including a lateral bar and a ratchet set. The lateral bar has a hollow connection part located in the center of the lateral bar and used for installing the ratchet set. Two flanks of the lateral bar make up a handgrip, respectively. The top of ratchet set is provided with a rotation button while a vertical bar extends downwardly from the rotation button. At least one of the handgrips includes a pivotal ear with a through hole, and the pivotal ear can be fitted into an insertion slot with a through hole at the free end of the lateral bar. A pivotal pin then passes through the through hole in the pivotal ear and the through hole in the insertion slot. This permits a pivotal movement of the handgrip on the pivotal pin. Accordingly, this configuration will considerably minimize the occupied space in packing, transport, storage and carrying. Particularly, the operators can more easily apply his force on the driver under special operation environments.

Claims

1. A T-handle ratchet wrench comprising:

a) a lateral bar having a hollow connection part located in the center of the lateral bar and used for installing a ratchet set;

b) the ratchet set having a rotation button at the top thereof while a vertical bar extends downwardly from the rotation button;

c) at least one handgrip pivotally connected to the lateral bar and having a pivotal ear with a through hole, the pivotal ear being fitted into an insertion slot with a through hole at the free end of the lateral bar, a pivotal pin passes through the through hole in the pivotal ear and the through hole in the insertion slot, and this permits a pivotal movement of the handgrip on the pivotal pin within the lateral bar; and

d) a sleeve that is mounted on the handgrip while a spring is placed into the sleeve wherein the free end of the handgrip includes an insertion hole into which a positioning plug is fitted, and the internal wall of the sleeve is provided with a blocking ring so that the spring is located between the blocking ring and the positioning plug, wherein a length of the sleeve covers a pivotal part between the lateral bar and the handgrip.