Power nailer with driver blade blocking mechanism magazine
AssigneeIllinois Tool Works Inc.
InventorYury Shkolnikov
Life of this patent
Estimating the term…
Abstract
In a fastener-driving tool with a magazine, a nosepiece, and a driver blade slidably reciprocating relative to the nosepiece for driving fasteners, a mechanism for preventing jamming includes a follower slidably disposed inside the magazine for urging fasteners toward the nosepiece, and having a formation for engaging the driver blade and preventing driver blade reciprocation after the last fastener in the magazine has been driven.
Claims17
In a fastener-driving tool with a magazine, a nosepiece and a driver blade slidably reciprocating relative to the nosepiece for driving fasteners, a mechanism for preventing jamming, comprising:
- a follower slidably disposed inside the magazine for urging fasteners toward the nosepiece, and having a formation for engaging the driver blade and preventing driver blade reciprocation after a last fastener in the magazine has been driven;
- wherein said second portion laterally expands past respective sides of the first portion for guiding said follower in the magazine, said second portion forms a widest part of said follower when viewed from a front of the tool where the magazine abuts the nosepiece.
(canceled)
A fastener-driving tool, comprising:
- a magazine having a first end for receiving fasteners, a second end for delivering fasteners for driving, and a guide channel;
- a nosepiece defining a fastener passage slot in communication with said magazine for receiving fasteners from said second end and a driver blade path in communication with said slot;
- a driver blade slidably reciprocating in said driver blade path for driving fasteners;
- and
- a follower slidably disposed inside said magazine and having a first portion for urging fasteners toward said nosepiece and a second portion for engaging said driver blade and preventing driver blade reciprocation after the last fastener in a fastener strip has been driven;
- wherein said second portion is displaced in a range of 0.025 to 0.10 inch from a lower end of said driver blade after the last fastener has been driven for reducing impact to said follower in the event said tool is fired after the last fastener in the fastener strip has been driven.
(canceled)
A fastener-driving tool, comprising:
- a magazine having a first end for receiving fasteners, a second end for delivering fasteners for driving, and a guide channel;
- a nosepiece defining a fastener passage slot in communication with said magazine for receiving fasteners from said second end and a driver blade path in communication with said slot;
- a driver blade slidably reciprocating in said driver blade path for driving fasteners;
- a follower slidably disposed inside said magazine and having a first portion for urging fasteners toward said nosepiece and a second portion for engaging said driver blade and preventing driver blade reciprocation after the last fastener in a fastener strip has been driven;
- said driver blade has a lower end, and in a pre-firing position, once the last fastener is driven, said follower extends into said nosepiece and said second portion is disposed in close proximity to said lower end;
- and
- said shear block has an upper edge, and wherein said second portion slidingly engages said upper edge for supporting said second portion against movement of said driver blade for reducing impact to said follower in the event said tool is fired after the last fastener in the fastener strip has been driven.
Dependencies are inferred from the claim text.