초록 ▼

A driving tool, such as a screwdriver, has a handle with an injection-molded, relatively hard and rigid inner body, molded around a tool shank, the inner body having an elongated central portion with two end flanges extending laterally outwardly of the central portion around the entire periphery the

A driving tool, such as a screwdriver, has a handle with an injection-molded, relatively hard and rigid inner body, molded around a tool shank, the inner body having an elongated central portion with two end flanges extending laterally outwardly of the central portion around the entire periphery thereof, with the central portion having a peripheral groove formed therein adjacent to an end flange. An outer gripping body of a relatively soft and resilient material is injection molded around the inner body, by supporting the inner body by its ends in a mold cavity and injecting the mold charge adjacent to the groove so that it first fills the groove and then flows in a circumferential front longitudinally to the other end flange, surrounding said central portion of said inner body.

대표청구항 ▼

1. A method of forming a hand tool comprising the steps of:injection molding a relatively hard and rigid inner body having an elongated central portion with an outer surface at a first level and two end flanges extending laterally outwardly of the central portion around the entire periphery thereof

1. A method of forming a hand tool comprising the steps of:injection molding a relatively hard and rigid inner body having an elongated central portion with an outer surface at a first level and two end flanges extending laterally outwardly of the central portion around the entire periphery thereof to a second level above the first level, said central portion having a peripheral groove formed therein to a third level below the first level adjacent to an end flange, and injection molding around said inner body an outer gripping body formed of a relatively soft and resilient material so as to surround said central portion of said inner body and fill said groove.