초록 ▼

A urethane hammer or other hand-held striking tool having a handle portion cast of a lower durometer, more flexible grade of urethane material, and a head portion which is cast around a metallic weight at the end of the handle portion. The flexible handle absorbs shocks, while the hard material of t

A urethane hammer or other hand-held striking tool having a handle portion cast of a lower durometer, more flexible grade of urethane material, and a head portion which is cast around a metallic weight at the end of the handle portion. The flexible handle absorbs shocks, while the hard material of the head provides a durable, effective striking surface. The tool is cast using a two-stage process. In the first stage, the handle portion is cast with the metal weight located in its end. The handle portion is then placed in a second mold in which the weight on the end of the handle extends into a larger cavity corresponding to the head portion of the tool. The higher durometer urethane material is then cast in this cavity so as to encase the weight and the end of the handle portion.

대표청구항 ▼

[ What is claimed is:] [1.] A method for forming a hand-held striking tool having a metallic head weight which is entirely encased within cast urethane material, said method comprising the steps of:placing said metallic head weight in an end of a first mold for forming a shank portion of said tool;f

[ What is claimed is:] [1.] A method for forming a hand-held striking tool having a metallic head weight which is entirely encased within cast urethane material, said method comprising the steps of:placing said metallic head weight in an end of a first mold for forming a shank portion of said tool;flowing a first, urethane material into said mold so as to form said shank portion, and so that said first urethane material flows into engagement with said metallic head weight;at least partially curing said first urethane material so that said first urethane material attaches said head weight to an end of said shank portion;placing said shank portion of said tool in a second mold having a cavity for forming a head portion of said tool, said second mold being configured to hold said shank portion at a spaced distance from said head weight so that said head weight is supported centrally in said cavity of said second mold by said at least partially cured urethane material of said shank portion without any other support; andflowing a second urethane material into said cavity in said second mold so as to form said head portion, and so that said second urethane material entirely encases said metallic head weight on said end of said shank portion of said tool.