| CPC F42B 7/04 (2013.01) [F42B 7/046 (2013.01); F42B 7/08 (2013.01); F42B 12/74 (2013.01)] | 9 Claims |
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1. A shotshell comprising:
a plurality of pellets;
a hull comprising a metal head, a base wad, a primer and an outer tubular element,
a powder housed inside the hull,
and a wad housed inside the outer tubular element and above said powder,
wherein said wad comprises:
an inner tubular element open both at the bottom and at the top, adapted to contain the plurality of pellets, the lower opening being delimited by a lower edge of said inner tubular element, and the upper opening being delimited by an upper edge of said inner tubular element
wherein all of the plurality of pellets are contained inside the inner tubular element;
and at least one sealing element adapted to:
isolate the gases developing from the explosion of the powder contained in the hull, from the inner tubular element and from what is contained therein,
wherein a side wall of the inner tubular element is in contact with an inner side wall of said outer tubular element;
wherein the sealing element is provided:
inside the outer tubular element of the shotshell between the powder and a first end of said inner tubular element and an outer side wall of said sealing element being in contact with an inner side wall of said outer tubular element,
and outside said inner tubular element and in contact with said first end of said inner tubular element,
wherein:
the inner tubular element does not have sealing elements therein adapted to isolate the gases developing from the explosion of the powder contained in the hull, from the inner tubular element and from what is contained therein, the sealing element adapted to isolate the gases developing from the explosion of the powder contained in the hull, being provided in the shotshell only outside said inner tubular element;
wherein said sealing element has an upper portion thereof that abuts against the lower edge of said tubular element;
wherein said sealing element is an element distinct and separate with respect to the inner tubular element;
wherein said sealing element is also a pushing element, adapted to transmit the energy generated by the gases developing from the explosion of the powder to the inner tubular element and to what is contained therein,
and wherein at least the inner tubular element and said sealing element are made at least up to 95% by weight of one or more biodegradable or compostable materials;
wherein the shotshell further comprises an additional element housed inside the inner tubular element in a lower portion thereof which extends from the lower opening towards the upper opening, and below the plurality of pellets, wherein said additional element is adapted to stiffen said lower portion of the inner tubular element or to at least partially absorb the resisting force generated by said plurality of pellets at the time of the explosion of the powder and of the phase of pushing the wad, wherein said additional element is dimensioned, or has a shape, or is made of a material adapted not to create a seal with said inner tubular element, that is said additional element is not adapted to create a seal and isolate the inner tubular element from the gases developing from the explosion of the powder contained in the hull from the inner tubular element and from what contained therein, said sealing action being performed only by said sealing element outside the inner tubular element;
wherein the sealing element has a continuous upper flat surface in contact with a flat lower end of the inner tubular element; and
wherein the inner tubular element is connected to the outer tubular element by an interference fit and the sealing element is connected to the outer tubular element by an interference fit.
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