Rear loading sighted speargun
AssigneeDeath From Above Spearguns LLC
InventorMathew Borowski
Life of this patent
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Abstract
A speargun and speargun components are disclosed allowing for rapid reloading of the spear, and retaining the spear in the gun with an open track and retention mechanism. A spear retention mechanism is also disclosed, which may be integral with the speargun or interchangeable for different size spears. A phospholuminescent sighting track on one or both sides of the top of the speargun is also disclosed whereby the illuminated portion of the speargun provides a visual sight for a spear once inserted into the track. An interchangeable system of speargun retention mechanisms is also provided.
Claims17
A spear retention block comprising:
- a block body having a spear-retaining cavity, the retaining cavity defining a central axis;
- two retention jaws extending outward and away from the retaining cavity and longitudinally parallel to the central axis;
- an aperture disposed on a bottom surface of the block body;
- a threaded fastener dimensioned to fit through the aperture and constrain the block body;
- and
- a double-threaded fastener having a first threaded portion and a second threaded portion, the first threaded portion adapted to threadedly engage with the threaded fastener, the second threaded portion adapted to threadedly engage with a mortise in a spear gun stock, whereby the retention block is constrained within the mortise and selectively displaced relative to the spear gun stock.
A speargun sighting device comprising:
- a photoluminescent concave cylinder defined by
- an inner arc having a central axis and dimensioned to slidingly accept a spear shaft, the spear shaft having a spear axis substantially co-axial to the central axis;
- an outer profile;
- and
- sighting portions parallel to the central axis and connecting the inner arc and outer profile
- wherein the photoluminescent concave cylinder constitutes a spear track provided along a top surface of a speargun stock.
A speargun comprising:
- a stock having a mortise and a captured threaded fastener;
- a concave cylindrical arc defining a spear track along the stock;
- and
- an interchangeable speargun retention block dimensioned to translate into the mortise and having a threaded portion adapted to threadedly engage with the captured threaded fastener,
- wherein the captured threaded fastener engages with and displaces the retention block relative to the spear track.
Dependencies are inferred from the claim text.