Patent Number: 6,305,255

Title: Modular screwdriver with four usable wrench units of different sizes

Abstract: A modular screwdriver includes an elongated hollow handle, a first sleeve,a second sleeve, and a connecting rod. The first and second sleeves aremounted removably on two ends of the handle. The connecting rod extendsthrough the handle, and can be locked releasably at a first position,where one of the first and second sleeves functions as a wrench, and asecond position, where the other one of the first and second sleevesfunctions as a wrench. Each of the first and second sleeves has a centralbore, which is formed therethrough and which has twohexagonal-cross-sectioned end portions of different sizes. All of the endportions of the central bores in the first and second sleeves aredifferent from each other in size. Because either of the ends of each ofthe first and second sleeves can be mounted removably on the handle, eachof the first and second sleeves can be inverted. As such, the screwdriverhas four wrench units of different sizes.

Inventors: Wu; Chih-Ming (Shang-Ping Tsun, Shan-Lin Hsiang, Kaohsiung Hsien, TW)

Assignee:

International Classification:

Expiration Date: 10/23/2013