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US 2024/0359303 A1Published application
Apparatus for installing explosively driven fasteners
AssigneeNitroset, LLC
InventorsJoe Lin, Brian Liu
Life of this patent
Estimating the term…
Abstract
A spring tool for actuating explosive fasteners for driving nails into a substrate is disclosed. For the tool to operate at its maximum potential the firing pin guide should be pushed securely against the rear of the fastener and the tip of the fastener should be pushed securely against the substrate. The action of the operator pushing the tool forward to actuate the tool moves the trigger body forward while compressing the firing spring until the trigger body travels the exact distance needed to release the trigger ball. The trigger body must also be in optimal rotational orientation with the tool and means for accomplishing the alignment is disclosed.
Claims16
A tool for installing an explosively driven fastener, the fastener including a nail and an explosive load attached to the nail, the tool comprising:
- an outer cover sleeve defining a bore, a longitudinal axis, a proximal end and a distal end;
- a generally tubular trigger body fixedly positioned in the outer cover sleeve, the bore of the trigger body having a distally facing arcuate backstop face;
- rotational positioning between the outer cover sleeve and the generally tubular trigger body being determined by a radial tongue or key on one of the outer cover sleeve and the generally tubular trigger body engaging a complementary groove or keyway in the other of the outer cover sleeve and the generally tubular trigger body;
- an end cap positioned at the proximal end of the trigger body securing the trigger body to the outer cover sleeve;
- a firing pin holder located within the bore of the generally tubular trigger body and extending along the longitudinal axis thereof, the firing pin holder having a proximal end and a distal end;
- a firing spring arranged to bias the firing pin holder distally with respect to the trigger body;
- a firing pin having a proximal end and a distal end, the distal end being pointed, the firing pin being separate from the firing pin holder, the proximal end of the firing pin being removably coupled to the distal end of the firing pin holder;
- a nosepiece having a proximal end and a distal end, the proximal end arranged to receive a firing pin guide and the distal end arranged to receive the fastener comprising the nail and the explosive load such that when the fastener is placed in the distal end of the nosepiece and the firing pin is biased out of the outer cover sleeve by the firing spring, the firing pin strikes the explosive load causing the explosive load to explode and drive the nail out of the nosepiece,
- a nosepiece spring biasing the nosepiece distally,
- a tubular reset sleeve having an inner annular facing distally and an outer annular surface facing proximally,
- wherein the firing pin guide is carried slidably in the reset sleeve, the firing pin guide having a distal end and a proximal end, the firing pin guide having a proximally facing outer arcuate face abuttable against the inner arcuate face of the reset sleeve, and an arcuate face at its proximal end abuttable against the inside distally facing arcuate backstop face in the generally tubular trigger body;
- a reset spring mounted around the firing pin guide and abutting the outer arcuate face of the reset sleeve, the reset spring biasing the reset sleeve distally;
- a trigger ball and a trigger ball spring mounted transversely in the firing pin holder, the trigger ball being biased radially outward from within the firing pin holder;
- wherein the firing pin guide has a slot extending from the proximal end and a widened area in the slot to receive the trigger ball,
- wherein
- when the tool is in an energized position, the trigger ball rests in the widened area of the slot thereby limiting distal movement of the firing pin, and the arcuate end face of the firing pin guide abuts or nearly abuts the arcuate backstop face in the trigger body.
13 more elements
A tool for installing an explosively driven fastener, the fastener including a nail and an explosive load attached to the nail, the tool comprising:
- an outer cover sleeve defining a passage, a longitudinal axis, a proximal end and a distal end;
- a generally tubular trigger body fixedly positioned in the outer cover sleeve, the bore of the trigger body having a distally facing arcuate backstop face;
- an end cap positioned at the proximal end of the trigger body securing the trigger body to the outer cover sleeve;
- a firing pin holder located within the bore of the generally tubular trigger body and extending along the longitudinal axis thereof, the firing pin holder having a proximal end and a distal end;
- a firing spring arranged to bias the firing pin holder distally with respect to the trigger body;
- a firing pin having a proximal end and a distal end, the distal end being pointed, the firing pin being separate from the firing pin holder, the proximal end of the firing pin being removably coupled to the distal end of the firing pin holder;
- a tubular reset sleeve carried by the trigger body, said tubular reset sleeve having a proximal end, a distal end, a longitudinal axis between the proximal end and the distal end, and a threaded outer surface near the distal end,
- a nosepiece having a proximal end and a distal end, the proximal end being received by the distal end of the tubular reset sleeve and arranged to receive a firing pin guide and the distal end arranged to receive the fastener comprising the nail and the explosive load such that when the fastener is placed in the distal end of the nosepiece and the firing pin is biased out of the outer cover sleeve by the firing spring, the firing pin strikes the explosive load causing the explosive load to explode and drive the nail out of the nosepiece, said nosepiece having a proximally facing outside arcuate surface facing the distal end of the reset sleeve,
- a tubular debris cup positioned in covering coaxial relationship with the nosepiece, said tubular debris cup having a proximal end portion and a distal end, the distal end of the debris cup positioned in close covering relationship with a distal end portion of the nosepiece, the proximal end portion of the debris cup having a threaded inner surface threaded to the threaded external surface of the reset sleeve;
- wherein the firing pin guide is carried slidably in the reset sleeve, the firing pin guide having a distal end and a proximal end, the firing pin guide having a proximally facing outer arcuate surface abuttable against the inner arcuate surface of the reset sleeve, and an arcuate face at its proximal end abuttable against the inside distally facing arcuate backstop face in the generally tubular trigger body;
- a reset spring mounted around the firing pin guide and abutting the proximally facing outer arcuate face of the reset sleeve, the reset spring biasing the reset sleeve distally;
- a trigger ball and a trigger ball spring mounted transversely in the firing pin holder, the trigger ball being biased radially outward from within the firing pin holder;
- wherein the firing pin guide has a slot extending from the proximal end and a widened area in the slot to receive the trigger ball,
- wherein
- when the tool is in an energized position, the trigger ball rests in the widened area of the slot thereby limiting distal movement of the firing pin, and the arcuate end face of the firing pin guide abuts or nearly abuts the arcuate backstop face in the trigger body.
12 more elements
Dependencies are inferred from the claim text.