Contact trip having magnetic filter

Patent metadata

Field	Value
Publication number	US-10926385-B2
Application number	US-201815899530-A
Country	US
Kind code	B2
Filing date	Feb 20, 2018
Priority date	Feb 24, 2017
Publication date	Feb 23, 2021
Grant date	Feb 23, 2021

Abstract

A powered driving tool, such as a nailer, having a magnetic filter in the contact trip that retains ferrous debris remaining in the nosepiece as a result of a first fastener being driven into a workpiece, and allows the ferrous debris to be expelled from the nosepiece with a portion of a second fastener, when the second fastener is driven into a workpiece.

First claim

We claim:

1. A driving tool comprising:
a housing;
a nosepiece connected to an end of the housing and having a cylindric body;
a driver operatively translatable along a drive axis to engage and drive a fastener through the nosepiece and into a workpiece;
a contact trip received in the cylindric body of the nosepiece and slidable between a retracted position and an extended position relative to the end of the nosepiece, the contact trip having an elongated body defining an aperture aligned with the drive axis and through which the fastener is driven by the driver into the workpiece;
at least one pocket disposed within an outer wall of the contact trip; and
at least one magnet disposed in each of the at least one pocket in the contact trip,
wherein a portion of the contact trip in which the at least one magnet is disposed, remains within the nosepiece in both the retracted and extended positions.

2. The driving tool according to claim 1 , wherein the at least one pocket comprises two pockets disposed on opposite lateral sides of the drive axis.

3. The driving tool according to claim 2 , wherein the at least one magnet comprises one magnet in each pocket, the magnets being arranged with opposing polarities facing the drive axis.

4. The driving tool according to claim 1 , wherein the at least one magnet has a thickness that is less than the depth of the at least one pockets.

5. The driving tool according to claim 1 , wherein the at least one magnet comprises an N50 grade magnet.

6. The driving tool according to claim 1 , wherein the contact trip is formed from hardened steel.

7. The driving tool according to claim 1 , wherein the at least one magnet is magnetically retained within the at least one pocket.

Assignees

• Black & Decker Inc

Inventors

• Myers Merrill
• Garber Stuart E
• Tejada Diego A
• Stumpf William R

Classifications

• B25C1/008 Primary

  Safety devices · CPC title

• B25C1/188

  Arrangements at the forward end of the barrel, e.g. splinter guards, spall minimisers, safety arrangements, silencers, bolt retainers · CPC title

• B25B21/002

  for special purposes · CPC title

• B25B21/02

  with means for imparting impact to screwdriver blade or nut socket · CPC title

• B25F5/021

  with guiding devices (guiding devices for hand tools on stands or supports B25H1/0078) · CPC title