US3757988A — Shattering frangible objects, particularly plates

Claim 1

Independent Claim 60 words

An explosive device comprising a box adapted to fit a recess in a pane or plate of frangible material, guide means in the box, bullet means in the guide means, an explosive charge associated with the guide means, and means to fire the charge whereby to project the bullet means through the guide means against the wall of the recess.

Claim 2

Dependent Claim 60 words

An explosive device comprising a box adapted to fit a recess in a pane or plate of frangible material, guide means in the box, bullet means in the guide means, an explosive charge associated with the guide means, and means to fire the charge whereby to project the bullet means through the guide means against the wall of the recess.

Claim 3

Dependent Claim 61 words

Frangible wall means comprising a plate having a recess therein, an explosive device according to claim 1 positioned in the recess, said device including barrel means aimed at the wall of the recess, oppositely directed bullet means in the barrel means, means to mount the device in the recess, the explosive charge being between the bullet means and acting on both.

Claim 4

Dependent Claim 12 words

Wall means according to claim 2 comprising a pane of tempered glass.

Claim 5

Dependent Claim 54 words

Wall means comprising a pane of tempered glass transpierced by a hole, an explosive device comprising oppositely disposed hollow bullets sharing a common explosive charge disposed in the hole, means to direct the bullets against the wall of the hole, means to fire the charge, and closure means sealing both faces of the hole.

Claim 6

Dependent Claim 54 words

Wall means comprising a pane of tempered glass transpierced by a hole, an explosive device comprising oppositely disposed hollow bullets sharing a common explosive charge disposed in the hole, means to direct the bullets against the wall of the hole, means to fire the charge, and closure means sealing both faces of the hole.

Claim 7

Dependent Claim 37 words

Wall means according to claim 4 in which the closure means comprises a capped cylindrical body projecting through and beyond the hole, apertured to receive the explosive device, and shaped to receive and retain a cooperating cap.

Claim 8

Dependent Claim 30 words

Wall means according to claim 5 in which the capped cylindrical body is solid except for a transversely extending slot in which the explosive charge and bullet means are emplaced.

Claim 9

Dependent Claim 74 words

Wall means adapted to close an aperture comprising a pane of frangible material, an aperture therein penetrating the wall means transversely to its length, an explosive device disposed in the aperture comprising bullet means directed against the wall of the aperture parallel to the faces of the sheet, an explosive charge associated with the bullet means, and means to fire the explosive charge to propel the bullet means against the side of the aperture.

Claim 10

Dependent Claim 74 words

Wall means adapted to close an aperture comprising a pane of frangible material, an aperture therein penetrating the wall means transversely to its length, an explosive device disposed in the aperture comprising bullet means directed against the wall of the aperture parallel to the faces of the sheet, an explosive charge associated with the bullet means, and means to fire the explosive charge to propel the bullet means against the side of the aperture.

Claim 11

Dependent Claim 45 words

Wall means according to claim 7 comprising a tempered glass plate closing an aperture in a container under pressure, and means associated with the aperture and the wall means to seal the container, the explosive device being located in the wall means outside the aperture.

Claim 12

Independent Claim 49 words

The method of shattering a frangible pane which comprises mounting bullet means and an explosive charge in the thickness of the pane with the bullet means directed toward the thickness of the pane, and firing the explosive charge, thereby propelling the bullet means against the thickness of the pane.

Claim 13

Independent Claim 49 words

The method of shattering a frangible pane which comprises mounting bullet means and an explosive charge in the thickness of the pane with the bullet means directed toward the thickness of the pane, and firing the explosive charge, thereby propelling the bullet means against the thickness of the pane.

Claim 14

Dependent Claim 12 words

The method of claim 9 in which the pane is tempered glass.

Claim 15

Dependent Claim 41 words

Wall means according to claim 7 in which the bullet means consists of oppositely directed hollow bullets sharing a common explosive charge, the points of the bullets being hard, and the hollows containing at least a part of the explosive charge.

Claim 16

Dependent Claim 19 words

A glass pane having mounted within the thickness of the glass an explosive device as described in claim 1.

Claim 17

Dependent Claim 33 words

In combination, tempered flat glass having disposed within its thickness an explosive charge, a bullet, means to guide the bullet against the cross section of the glass, and means to fire the charge.

Claim 18

Dependent Claim 33 words

In combination, tempered flat glass having disposed within its thickness an explosive charge, a bullet, means to guide the bullet against the cross section of the glass, and means to fire the charge.

Claim 19

Dependent Claim 36 words

A tempered glass window equipped with apparatus of destruction comprising an aperture in the glass, an explosive charge in the aperture, electrical firing means for the charge, and means to confine the explosion within the aperture.

Claim 20

Dependent Claim 36 words

A tempered glass window equipped with apparatus of destruction comprising an aperture in the glass, an explosive charge in the aperture, electrical firing means for the charge, and means to confine the explosion within the aperture.

Claim 21

Dependent Claim 43 words

A window according to claim 14 in which the hole is occupied by a box provided with rims overlying the edge of the hole, and with internal guide means containing the charge and projectile means directed upon the cross section of the glass.

Claim 22

Dependent Claim 29 words

A window according to claim 15 in which the guide means comprises a barrel open at both ends containing oppositely directed bullets between which is lodged the explosive charge.

Claim 23

Dependent Claim 51 words

A window according to claim 14 in which the box fits the hole in the glass and is composed of strong, interfitting parts which, when joined, grip the rim of the hole, within which a barrel, open at both ends, contains oppositely directed bullets between which is lodged the explosive charge.

Claim 24

Dependent Claim 28 words

Apparatus according to claim 1 in which the window is in the mouth of a container of compressed gas, and the container is connected to an expansible sack.

Claim 25

Dependent Claim 12 words

A vehicle having a tempered glass window equipped as in claim 14.

Claim 26

Dependent Claim 86 words

A frangible vehicle windshield having a recess let into the thickness of the glass, a box comprising interfitting, screw threaded parts having caps overlying the edge of the recess and gripping the glass between them, said box including matching blocks in the thickness of the glass defining between them and with the caps a barrel open at both ends, a pair of oppositely directed bullets mounted in the barrel, an explosive charge mounted within the barrel between the bullets, and means to fire the charge electrically.

Claim 27

Dependent Claim 86 words

A frangible vehicle windshield having a recess let into the thickness of the glass, a box comprising interfitting, screw threaded parts having caps overlying the edge of the recess and gripping the glass between them, said box including matching blocks in the thickness of the glass defining between them and with the caps a barrel open at both ends, a pair of oppositely directed bullets mounted in the barrel, an explosive charge mounted within the barrel between the bullets, and means to fire the charge electrically.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1976-09-10	1977-03-12	1977-09-11	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1980-09-10	1981-03-12	1981-09-11	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1984-09-10	1985-03-12	1985-09-11	$7700.00	Window Closed / Lapsed

Shattering frangible objects, particularly plates

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