Back to results
US 11,981,010 B2Granted
High efficiency torsion spring tacker
AssigneeWorkTools, Inc.
InventorJoel S. Marks
Life of this patent
Estimating the term…
Abstract
A spring energized fastening tool with compact, rigid, low friction working elements is disclosed. A torsion power spring includes forward extending arms with the arms pressing each other proximate a front distal end of the spring. A cantilevered lever links to a handle and engages the spring adjacent to the striker. A bottom loading staple track unlatches and opens through a simple pulling-out action. Structures are provided to enable fitment with a formed sheet metal handle and housing. The fastening tool is particularly simple to assemble, powerful, and of low operating effort.
Claims18
A fastening tool, comprising:
- a housing with a top, bottom and sides, the housing extending longitudinally between a front and a rear;
- a track chamber subassembly disposed along the bottom of the housing, the track chamber subassembly including a track, a track pull, and a pusher;
- a striker disposed at the front of the housing including an upper striker position above the track and a lower striker position in front of the track;
- the track including a closed operative track position and an open track position, the track being selectively latched to be retained in the closed operative track position, a track latch spring biasing the track to be latched, and the track extending rearward from the housing in the open track position;
- a rear of the track being movable vertically within the track chamber as the track remains in a front position, a first vertical track position including the track engaging a detent of the track chamber, and a second vertical track position wherein the track is moved to disengage the dent;
- a track pull pivotally attached to the rear of the track, the track pull including a normal position relative to the track, the track pull rotating from the normal position to a pivoted track pull position when the track pull is pulled rearward, and the track pull, when pulled to the pivoted track pull position, causes the track to move vertically within the track chamber to de-latch the track from the closed operative track position to a track de-latched position;
- and
- the track is movable horizontally rearward from the track de-latched position to the open track position.
5 more elements
A fastening tool, comprising:
- a housing with a top, bottom and sides, the housing extending longitudinally between a front and a rear;
- a track chamber subassembly disposed along the bottom of the housing, the track chamber subassembly including a track, a track pull, and a pusher;
- a striker disposed at the front of the housing including an upper striker position above the track and a lower striker position in front of the track;
- the track including a closed operative track position and an open track position, the track extending rearward from the housing in the open track position, a detent of the fastening tool selectively retaining the track in the closed operative track position;
- a track bias spring biasing the track to be retained in the closed operative track position, the track being movable vertically within the track chamber at a rear of the track from the closed operative track position to a de-latched position cleared of the detent, and the cleared track is free to slide to the open track position upon the rear of the track moving vertically;
- and
- the track pull pivotally attached to a rear of the track, the track pull including a normal position relative to the track, the track pull rotating from the normal position to a pivoted track pull position, the track pull is selectively linked to the track bias spring whereby the track pull, in the pivoted track pull position, causes the track bias spring to deflect as the rear of the track moves vertically to de-latch the track from the closed operative track position to the track de-latched position.
4 more elements
A fastening tool, comprising:
- a housing with a top, bottom and sides, the housing extending longitudinally between a front and a rear;
- a track chamber subassembly disposed along the bottom of the housing, the track chamber subassembly including a track, a track pull, and a pusher;
- a striker disposed at the front of the housing including an upper striker position above the track and a lower striker position in front of the track;
- the track including a closed operative track position and an open track position, the track extending rearward from the housing in the open track position, a detent of the fastening tool selectively retaining the track in the closed operative track position;
- a track bias spring biasing the track to be retained in the closed operative track position, the track being movable vertically within the track chamber at a rear of the track from the closed operative track position to a de-latched position cleared of the detent and the cleared track is free to slide to the open track position upon the rear of the track moving vertically;
- and
- the track pull pivotally attached to a rear of the track, the track pull including a normal position relative to the track, the track pull rotating from the normal position to a pivoted track pull position, the track pull is selectively linked to the track bias spring whereby the track pull, in the pivoted track pull position, causes the track bias spring to deflect as the rear of the track moves vertically to de-latch the track from the closed track operative position to the track de-latched position, wherein the track pull rotates about a hinge between the normal position of the track pull and the pivoted track pull position.
4 more elements
Dependencies are inferred from the claim text.