Pole sander

Patent metadata

Field	Value
Publication number	US-11951585-B2
Application number	US-202017075862-A
Country	US
Kind code	B2
Filing date	Oct 21, 2020
Priority date	Oct 23, 2019
Publication date	Apr 9, 2024
Grant date	Apr 9, 2024

Abstract

A pole sander is provided including an elongate body having a first end and a second end, an electric motor, and a sanding head attached via a pivot mechanism to the first end of the elongate body. The sanding head includes a hood including a plate and a peripheral wall formed on the underside of the plate around an edge of the plate; an output spindle that projects from the hood and is rotatably driven by the electric motor around a rotational axis; and a brush ring mounted on the underside of the plate adjacent the edge of the plate inside of the peripheral wall. The brush ring is attached to the plate via a spring comprising at least one of a leaf spring or a wave spring.

First claim

The invention claimed is:

1. A pole sander comprising:
an elongate body having a first end and a second end;
an electric motor; and
a sanding head attached via a pivot mechanism to the first end of the elongate body, wherein the sanding head comprises:
a hood including a plate and a peripheral wall formed on the underside of the plate around an edge of the plate;
an output spindle that projects from the hood and is rotatably driven by the electric motor around a rotational axis;
a brush ring mounted on the underside of the plate adjacent the edge of the plate inside of the peripheral wall, wherein the brush ring is attached to the plate via a leaf spring comprising a first end and a second end; and
an aperture formed through the plate, wherein the leaf spring extends through the aperture in order for the second end of the leaf spring to attach to a top side of the plate.

2. The pole sander of claim 1 , wherein the leaf spring is formed from sheet metal and is resiliently deformable in a direction perpendicular to a plane of the sheet.

3. The pole sander of claim 1 , wherein the brush ring comprises a circular ring and a series of bristles extending perpendicularly from a bottom side of the brush ring.

4. The pole sander of claim 3 , wherein the first end of the leaf spring is attaches to a top side of the circular ring.

5. The pole sander of claim 1 , wherein the leaf spring extends in a direction parallel to the brush ring.

6. The pole sander of claim 1 , wherein the leaf spring comprises a central section located between the first end and the second end.

7. The pole sander of claim 6 , wherein the central section of the leaf spring extends upwardly at an angle to a plane of the brush ring.

8. The pole sander of claim 6 , wherein the central section of the leaf spring extends through the aperture.

9. The pole sander of claim 1 , further comprising a circular inner wall formed on the underside of the plate in proximity to the edge of the plate inside of the peripheral wall and the brush ring, wherein the peripheral wall and inner wall form a trough in the brush ring.

10. A pole sander comprising:
an elongate body having a first end and a second end;
an electric motor; and
a sanding head attached via a pivot mechanism to the first end of the elongate body, wherein the sanding head comprises:
a hood including a plate and a peripheral wall formed on the underside of the plate around an edge of the plate;
an output spindle that projects from the hood and is rotatably driven by the electric motor around a rotational axis;
a brush ring mounted on the underside of the plate adjacent the edge of the plate inside of the peripheral wall, wherein the brush ring is attached to the plate via a spring comprising at least one of a leaf spring or a wave spring;
a circular inner wall formed on the underside of the plate in proximity to the edge of the plate inside of the peripheral wall and brush ring, wherein the peripheral wall and inner wall form a trough in the brush ring; and
an aperture that informed through the base of the trough and through the plate.

11. The pole sander of claim 10 , wherein the spring is the wave spring and at least a part of the wave spring extends through the aperture to attach to a top side of the plate.

12. The pole sander of claim 10 , wherein the spring is the wave spring and the wave spring is at least one of a nested wave spring, a crest to crest wave spring, a single turn wave spring, or an interlace wave spring.

Assignees

• Black & Decker Inc

Inventors

• Schramm Benjamin
• Miebach Robert
• Turisin Marek
• Roth Joerg

Classifications

• B24B23/02 Primary

  with rotating grinding tools; Accessories therefor · CPC title

• B24B7/184 Primary

  pole sanders · CPC title

• B24B55/102

  with rotating tools · CPC title

• B24B55/052

  with rotating tools · CPC title