IP Library › Granted Patent US 11,783,977
Granted Patent B2
US 11,783,977 · App. 17/750,858 · Granted Oct 10, 2023

Magnetism booster assembly

Inventors: Michael J. Zimmermann (New Berlin, WI); Marcus Wechselberger (Milwaukee, WI)
Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
H01F7/02H01F7/0221H01F13/00H01F13/003H05K5/0217
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Quick Facts
Patent No.
US 11,783,977
App. No.
17/750,858
Granted
Oct 10, 2023
Kind
B2
Abstract

A magnetism booster assembly includes a body having a first end and a second end. The body defines a bore and a cavity formed separately from the bore. The bore extends between the first end and the second end. The cavity has a first opening adjacent the first end of the body and a second opening adjacent the second end of the body. The magnetism booster assembly also includes a magnet positioned within the cavity.

Claims (27)

1. A magnetism booster assembly comprising:

a body having a first end and a second end, the body defining a bore and a cavity formed separately from the bore, the bore extending between the first end and the second end, the cavity having a first opening adjacent the first end of the body and a second opening adjacent the second end of the body; and

a magnet positioned within the cavity.

2. The magnetism booster assembly of claim 1 , wherein the cavity is partially defined by a back surface of the body, and wherein the second opening is adjacent the back surface.

3. The magnetism booster assembly of claim 1 , wherein the body includes a protrusion extending into the bore, and wherein the protrusion is configured to engage a shaft of a tool.

4. The magnetism booster assembly of claim 1 , wherein the cavity is a first cavity and the magnet is a first magnet, wherein the body further defines a second cavity formed separately from the bore and the first cavity, wherein the second cavity has a third opening adjacent the first end of the body and a fourth opening adjacent the second end of the body, and the magnetism booster assembly further comprising a second magnet positioned within the second cavity.

5. The magnetism booster assembly of claim 4 , wherein the first cavity and the second cavity are positioned on diametrically opposite sides of the bore.

6. The magnetism booster assembly of claim 1 , wherein the body is generally circular, and wherein the cavity has a generally rectangular cross-section.

7. The magnetism booster assembly of claim 1 , wherein the first opening defines a lip that helps retain the magnet within the cavity.

8. The magnetism booster assembly of claim 1 , wherein the second opening extends from the second end into the cavity.

9. A magnetism booster assembly comprising:

a body including a first end and a second end, the body defining a bore extending between the first end and the second end, the bore defining an axis and including an inner surface that extends continuously around the axis and defines a first portion of the bore, the body further including a protrusion that extends toward the axis from the inner surface and defines a second portion of the bore, the first portion of the bore having a first width, the second portion of the bore having a second width that is less than the first width; and

a magnet supported by the body.

10. The magnetism booster assembly of claim 9 , wherein the protrusion extends circumferentially around the inner surface of the bore.

11. The magnetism booster assembly of claim 9 , wherein the protrusion is a first protrusion positioned adjacent the first end of the body, and wherein the body further includes a second protrusion extending from the inner surface towards the axis, the second protrusion positioned adjacent the second end of the body.

12. The magnetism booster assembly of claim 11 , wherein the second protrusion defines a third portion of the bore, the third portion having a third width, the third width being substantially equal to the second width.

13. The magnetism booster assembly of claim 9 , wherein the protrusion extends from the inner surface towards the axis within a range between approximately 1 mm and 3 mm such that the first width is greater than the second width by between approximately 1 mm and 3 mm.

14. The magnetism booster assembly of claim 9 , wherein the protrusion has a width measured parallel to the axis that is approximately 1 mm.

15. The magnetism booster assembly of claim 9 , wherein the protrusion is flexible to accommodate a variety of tool shaft sizes and shapes.

16. A magnetism booster assembly comprising:

a body including a first end and a second end, the body defining a bore and a cavity, the cavity having an interior and an opening allowing access to the interior of the cavity, the opening having a width that is less than a width of the interior of the cavity; and

a magnet received in the interior of the cavity.

17. The magnetism booster assembly of claim 16 , wherein the cavity is a first cavity, wherein the body further defines a second cavity that is substantially similar to the first cavity, and wherein the bore is positioned between the first cavity and the second cavity.

18. The magnetism booster assembly of claim 17 , wherein the magnet is a first magnet, and the magnetism booster assembly further comprising a second magnet received in an interior of the second cavity.

19. The magnetism booster assembly of claim 18 , wherein the first cavity, the second cavity, and the bore are formed separately from each other.

20. The magnetism booster assembly of claim 16 , wherein the body is made of a silicone material, and wherein the silicone material has a hardness on the Shore A scale between durometer 50 and 60.

21. The magnetism booster assembly of claim 9 , wherein the first portion and the second portion are axially offset from each other.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 22, 2022
From: ZIMMERMANN, MICHAEL J.; WECHSELBERGER, MARCUS
To: MILWAUKEE ELECTRIC TOOL CORPORATION
Reel/Frame 061182/0744 →
Continuity (3)
Continuation 16515803 · Jul 18, 2019
Provisional Application 62701204 · Jul 20, 2018
Related Publication 20220285061A1 · Sep 8, 2022