Hammer with hardened textured striking face

Patent metadata

Field	Value
Publication number	US-11833651-B2
Application number	US-202016784865-A
Country	US
Kind code	B2
Filing date	Feb 7, 2020
Priority date	Feb 7, 2019
Publication date	Dec 5, 2023
Grant date	Dec 5, 2023

Abstract

A tool, such as a hammer, including cladding on a striking surface is shown and described. The cladding interfaces against the object struck by the hammer, thus protecting the hammerhead body from wear. In one embodiment, the cladding comprises multiple separate cladding projections that are affixed to the striking surface.

First claim

What is claimed is:

1. A hammer comprising:
a handle;
a shaft rigidly coupled to the handle;
a striking structure comprising a body and a plurality of projections, the plurality of projections forming a pattern of pyramids that extend from the body and define a striking surface, wherein each projection of the plurality of projections comprises a base made from a first material and a cladding affixed to the base and made from a second material having a second hardness, wherein the second hardness is greater than the first hardness;
wherein each projection of the plurality of projections defines a first maximum height measured from a valley adjacent the projection to a tip of the projection, wherein the cladding affixed to each projection of the plurality of projections defines a second maximum height parallel to the first maximum height, and wherein the second maximum height of the cladding is at least 10% of the first maximum height of the projection; and
wherein adjacent projections intersect at a point to define each valley.

2. The hammer of claim 1 , wherein the plurality of projections define an outer surface that comprises both the first material and the second material.

3. The hammer of claim 1 , wherein the second hardness is between 63-68 HRC.

4. A hammer comprising:
a handle;
a shaft rigidly coupled to the handle;
a striking structure rigidly coupled to the shaft; and
a plurality of projections forming a pattern of pyramids that extend from the striking structure and that define a striking surface, the plurality of projections define a plurality of valleys between the plurality of projections, wherein each projection of the plurality of projections comprises a base made from a first material and a cladding affixed to the base and made from a second material different than the first material, wherein the base defines a first maximum width measured between valleys on opposing sides of the respective projection, the cladding defines a second maximum width that is measured parallel to the first maximum width, and wherein the second maximum width of the cladding is at least 50% of the first maximum width of the projection;
wherein each projection of the plurality of projections defines a first maximum height measured from a tip of the projection to a valley adjacent the projection, and wherein the cladding affixed to each projection of the plurality of projections defines a second maximum height measured from the tip of the projection to an outermost surface of the base, and wherein the second maximum height of the cladding is at least 10% of the first maximum height of the projection; and
wherein adjacent projections intersect at a point to define each valley.

5. The hammer of claim 4 , wherein the base of each projection of the plurality of projections defines a planar top surface that the cladding is affixed to.

6. The hammer of claim 4 , wherein the first material has a first hardness, wherein the second material has a second hardness, and wherein the second hardness is greater than the first hardness.

7. The hammer of claim 4 , wherein the second maximum width of the cladding is between 60% and 95% of the first maximum width.

8. The hammer of claim 4 , wherein the second maximum width of the cladding is less than 85% of the first maximum width.

9. The hammer of claim 4 , further comprising a head rigidly coupled to the shaft, the head comprising the striking structure and a claw opposing the striking structure, the claw comprising the second material.

10. A hammer comprising:
a handle;
a shaft rigidly coupled to the handle;
a striking structure rigidly coupled to the shaft; and
a plurality of projections affixed to the striking structure and that define a striking surface, wherein each projection of the plurality of projections comprises a base made from a first material and a cladding affixed to the base and made from a second material, wherein each projection of the plurality of projections defines a first maximum height measured from a valley adjacent the projection to a tip of the projection, wherein the cladding affixed to each projection of the plurality of projections defines a second maximum height parallel to the first maximum height, and wherein the second maximum height of the cladding is at least 10% of the first maximum height of the projection, and wherein adjacent projections intersect at a point to define each valley.

11. The hammer of claim 10 , wherein the second maximum height is between 1 mm and 8 mm.

12. The hammer of claim 10 , wherein the first material has a first hardness, the second material has a second hardness, and wherein the second hardness is greater than the first hardness.

13. The hammer of claim 10 , wherein the second maximum height of the cladding is between 60% and 95% of the first maximum height.

14. The hammer of claim 10 , further comprising a head rigidly coupled to the shaft, the head comprising the striking structure and a claw opposing the striking structure, the claw comprising the second material, wherein the plurality of projections extend from the striking structure.

15. The hammer of claim 10 , wherein each projection of the plurality of projections defines a first maximum width measured between valleys on opposing sides of the projection, and wherein the cladding affixed to each projection of the plurality of projections defines a second maximum width, and wherein the second maximum width is at least 50% of the first maximum width.

16. The hammer of claim 10 , wherein the base of each projection of the plurality of projections defines a planar top surface that the cladding is affixed to.

17. The hammer of claim 10 , wherein the first material is the same as the second material.

Assignees

• Milwaukee Electric Tool Corp

Inventors

• Paulsen Alexander J
• Larson Christopher T

Classifications

• B25D1/04 Primary

  with provision for withdrawing or holding nails or spikes · CPC title

• B25D1/02 Primary

  Inserts or attachments forming the striking part of hammer heads (B25D1/08 - B25D1/14 take precedence) · CPC title