US3554424A — Push to fire explosive tools

Claim 1

Independent Claim 82 words

An explosive tool comprising an operating cap carrying a firing pin, a transversely slotted barrel telescoped in the cap, an anvil feed slide having a firing chamber and movable in the barrel slot for carrying a charge into operative relation to the firing pin, and a fastener driving piston axially slidable in the bore of the barrel and to and from a position in communication with the firing chamber when the anvil feed slide is in operative relation to the firing pin.

Claim 2

Dependent Claim 82 words

An explosive tool comprising an operating cap carrying a firing pin, a transversely slotted barrel telescoped in the cap, an anvil feed slide having a firing chamber and movable in the barrel slot for carrying a charge into operative relation to the firing pin, and a fastener driving piston axially slidable in the bore of the barrel and to and from a position in communication with the firing chamber when the anvil feed slide is in operative relation to the firing pin.

Claim 3

Dependent Claim 36 words

A tool as set forth in claim 1 wherein there is a magazine secured to the barrel for carrying a spring-pressed stack of charges for successive delivery into the firing chamber of said anvil feed slide.

Claim 4

Dependent Claim 112 words

An explosive tool comprising a cylindrical operating cap closed at one end, a firing pin secured to and projecting axially from said end, a tubular barrel axially telescoped in the cap and having two spaced coaxial bores, one of said bores being adapted slidably to receive a portion of the firing pin and the other barrel bore being adapted slidably to receive a fastener driving piston, and feed means including a firing chamber operable transversely of the barrel when the cap is relatively retracted to position and support a charge for ignition intermediate the firing pin and the piston, said firing chamber having communication with the piston upon ignition of said charge.

Claim 5

Dependent Claim 112 words

An explosive tool comprising a cylindrical operating cap closed at one end, a firing pin secured to and projecting axially from said end, a tubular barrel axially telescoped in the cap and having two spaced coaxial bores, one of said bores being adapted slidably to receive a portion of the firing pin and the other barrel bore being adapted slidably to receive a fastener driving piston, and feed means including a firing chamber operable transversely of the barrel when the cap is relatively retracted to position and support a charge for ignition intermediate the firing pin and the piston, said firing chamber having communication with the piston upon ignition of said charge.

Claim 6

Dependent Claim 71 words

A tool as set forth in claim 3 wherein the cap is formed with an eccentric longitudinal bore, and the barrel carries a magazine tube slidable in said eccentric bore, the arrangement being such that in one position the feed means has its firing chamber aligned for receiving a charge from the tube and in all other positions a gate surface of the feed means retains the charges in the tube.

Claim 7

Dependent Claim 50 words

A tool as set forth in claim 3 wherein said feed means is in the form of a slide adapted to be moved transversely of the barrel, and means is provided for limiting slide travel to position the firing chamber between a charge pickup position and a charge ignition position.

Claim 8

Dependent Claim 56 words

A tool as set forth in claim 3 wherein the feed means is in the form of an anvil slide having its firing chamber recessed in one side thereof, an opposite side of the slide being formed with a recess to receive the piston, and vents axially connect the slide firing chamber with said piston recess.

Claim 9

Dependent Claim 52 words

A tool as set forth in claim 3 wherein, when said feed means supports a charge for ignition by the firing pin, a detent means operative between the cap and the barrel is arranged to position an impacting end of the firing pin in the feed means closely adjacent to the charge.

Claim 10

Dependent Claim 97 words

An explosive tool comprising a relatively reciprocable tubular barrel and an external operating member carrying a firing pin, the barrel having an axial bore for slidably guiding a fastener driving piston and a transverse guideway extending between the pin and the piston, a sliding anvil movable in the guideway and providing a vented firing chamber for confining a primerless charge in position to be impacted by the firing pin, and a sleeve secured to an end of the barrel for holding a fastener to be driven and for guiding the stem of said piston during fastener driving.

Claim 11

Dependent Claim 97 words

An explosive tool comprising a relatively reciprocable tubular barrel and an external operating member carrying a firing pin, the barrel having an axial bore for slidably guiding a fastener driving piston and a transverse guideway extending between the pin and the piston, a sliding anvil movable in the guideway and providing a vented firing chamber for confining a primerless charge in position to be impacted by the firing pin, and a sleeve secured to an end of the barrel for holding a fastener to be driven and for guiding the stem of said piston during fastener driving.

Claim 12

Dependent Claim 37 words

A tool as set forth in claim 8 wherein the sleeve is fitted with friction means for retaining the piston in vent closing relation to the firing chamber when the anvil confines the charge to be impacted.

Claim 13

Dependent Claim 131 words

In an explosive tool having a tubular barrel, relatively movable firing means for igniting a charge therein, and a piston axially slidable in the bore of the barrel for driving a fastener in response to the explosion of said charge, safety means mounted on the barrel for barring Premature operation of the piston, said safety means comprising a sleeve for guiding the piston and the fastener to be driven thereby, a nosepiece yieldingly retractable on the sleeve when urged into engagement with a workpiece intended to receive the fastener, and abutment means movably mounted in the sleeve and normally arranged to prevent fastener driving movement of the piston, said abutment means being yieldingly shiftable in response to relative movement of the sleeve and the nosepiece to permit operation of the piston.

Claim 14

Dependent Claim 131 words

In an explosive tool having a tubular barrel, relatively movable firing means for igniting a charge therein, and a piston axially slidable in the bore of the barrel for driving a fastener in response to the explosion of said charge, safety means mounted on the barrel for barring Premature operation of the piston, said safety means comprising a sleeve for guiding the piston and the fastener to be driven thereby, a nosepiece yieldingly retractable on the sleeve when urged into engagement with a workpiece intended to receive the fastener, and abutment means movably mounted in the sleeve and normally arranged to prevent fastener driving movement of the piston, said abutment means being yieldingly shiftable in response to relative movement of the sleeve and the nosepiece to permit operation of the piston.

Claim 15

Dependent Claim 53 words

A tool as set forth in claim 10 wherein said abutment means includes a pair of jaws pivotally supported in the sleeve and biased to block the operating path of the piston, the jaws being arranged respectively to be cammed to open position by engagement therewith of the nosepiece during its relative retraction.

Claim 16

Dependent Claim 126 words

In a manually controlled device for generating fluid pressure to be directed by a tubular barrel, an operating member relatively movable on one end of the barrel to actuate a firing pin axially in the bore of said barrel, a feeding anvil reciprocably movable transversely of the barrel bore, said anvil having a firing chamber recessed in one surface to receive a primerless explosive charge externally of the barrel and then support the charge within the bore for impact ignition by said pin, said anvil having a vent extending from the firing recess in said surface to an opposite anvil surface, and means limiting the anvil movement in one direction to align the firing chamber with said pin and the anvil vent with said barrel bore.

Claim 17

Dependent Claim 126 words

In a manually controlled device for generating fluid pressure to be directed by a tubular barrel, an operating member relatively movable on one end of the barrel to actuate a firing pin axially in the bore of said barrel, a feeding anvil reciprocably movable transversely of the barrel bore, said anvil having a firing chamber recessed in one surface to receive a primerless explosive charge externally of the barrel and then support the charge within the bore for impact ignition by said pin, said anvil having a vent extending from the firing recess in said surface to an opposite anvil surface, and means limiting the anvil movement in one direction to align the firing chamber with said pin and the anvil vent with said barrel bore.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1974-01-11	1974-07-13	1975-01-12	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1978-01-11	1978-07-13	1979-01-12	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1982-01-11	1982-07-13	1983-01-12	$7700.00	Window Closed / Lapsed

Push to fire explosive tools

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