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US 7,784,143 B1Granted
Apparatus for building tools
AssigneeKC Holdings, LLC
InventorScott A. Murray
Life of this patent
Estimating the term…
Abstract
The present invention is directed generally to tools that are made, at least in part, more durable, particularly one or more working surface(s) of the tools. For example, various tools such as trowels, knives, and scrappers may be made having at least a portion of their blades heat treated to make at least their working edges more durable and extend their useful lives. For example, in one embodiment, a trowel blade may have at least one texturing edge that has been at least partially heat treated.
Claims20
A trowel, comprising:
- a blade made of a base metal and having only selected portion(s) of the blade that are made harder than the base metal, resulting in a more durable blade having a longer useful life;
- a handle;
- and
- a tang connected to the handle and connected to the blade at a portion of the blade made of the base metal that has not been made harder.
1 more element
A hand trowel, comprising:
- a handle;
- a tang connected to the handle;
- a blade attached to the tang and approximately parallel with the handle, the blade being made of a high carbon steel and having only selected portion(s) that are made harder than the high carbon steel, wherein the tang is connected to the blade at a portion(s) that are not made harder than the high carbon steel, and whereby the blade is made more durable so as to have a longer useful life with improved durability, strength and/or resistance against wear and the blade-to-tang connection is made more durable.
A hand trowel, comprising:
- a handle;
- a flat blade made of a base metal material and having one or more peripheral side(s), wherein only selected one(s) of the peripheral side(s) of the blade are made more durable than the base material and have a longer useful life;
- and
- a tang connecting to the handle and the blade, wherein the tang is directly attached to the flat blade at only location(s) that is not made more durable.
1 more element
Dependencies are inferred from the claim text.