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US 2006/0185476 A1Published application
Method for making wrenches
OwnerYi Lininventor
Life of this patent
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Abstract
A method for making a wrench includes a step of forging a cylindrical alloy stick in a mold into a basic form including a head and a handle. The head is then treated to machine the two opposite surfaces and at least one hole is drilled in the head and a recess is defined in one of the surfaces of the head to form a prototype. The prototype is then proceeded by step of heat treatment and then put in a mold and plastic material is introduced to cover the head, the handle and the grip portion.
Claims10
A method for making wrenches, comprising:
- sep 1:
- preparing material:
- preparing raw material which is a cylindrical alloy stick;
- step 2:
- forging:
- forging the stick in a mold;
- step 3:
- basic form:
- cutting the stick into a basic form including a head and a handle;
- step 4:
- surface machining:
- machining two opposite surfaces of the head of the basic form;
- step 5:
- drilling:
- drilling a hole in the head and making a recess defined in one of the surfaces of the head;
- step 6:
- prototype;
- step 7:
- heat treatment:
- proceeding heat treatment (annealing) to the prototype;
- step 8:
- plastic part installation:
- putting the prototype in a mold and plastic material being introduced to cover the head, the handle and the grip portion, and
- step 9:
- obtaining a product.
22 more elements
A method for making wrench, comprising:
- sep 1:
- preparing material:
- preparing raw material which is a cylindrical alloy stick;
- step 2:
- forging:
- forging the stick in a mold;
- step 3:
- basic form:
- cutting the stick into a basic form including a head and a handle;
- step 4:
- surface machining:
- machining two opposite surfaces of the head of the basic form;
- step 5:
- drilling:
- drilling a hole in the head and making a recess defined in one of the surfaces of the head;
- step 6:
- prototype;
- step 7:
- heat treatment:
- proceeding heat treatment (annealing) to the prototype;
- step 8:
- coating:
- putting the prototype in a container filled with liquid plastic material which is coated to the head, the handle and the grip portion, and
- step 9:
- obtaining a product.
22 more elements
Dependencies are inferred from the claim text.