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US 8,147,361 B1Granted
Broadhead
AssigneeWeaver's Outdoor, Inc.
InventorZachary T Weaver
Life of this patent
Estimating the term…
Abstract
A broadhead with expandable front pivot cutting blades has the cutting blades connected to the broadhead by low-friction rotary connections. The connections reduce frictional forces during outward rotation of the blades and permit locked blade deployment before the blades hit the target.
Claims16
A broadhead for mounting on the lead end of an arrow or bolt, the broadhead comprising,
- A. a ferrule having a tip and a slot extending away from the tip, the slot having opposed side walls and a groove extending along each side wall;
- B. a blade having opposed blade sides and an opening extending through the blade between said blade sides, the blade in the slot with each blade side adjacent one side wall;
- C. a spherical or spheroidal mounting member in the opening in the blade, the mounting member having portions extending outwardly from the blade sides and into said grooves;
- D. two sliding connections, each sliding connection between a mounting member portion and the ferrule at one of said grooves;
- and
- E. a rotary connection between the blade and the mounting member;
- F. wherein when the broadhead hits a target the mounting member moves away from the tip along the sliding connections and the blade rotates outwardly around the rotary connection.
4 more elements
A broadhead comprising a ferrule, a blade and a spherical or spheroidal mounting member;
- the ferrule having a tip, a first wall extending rearwardly from the tip and a first groove in the first wall;
- the blade having a side and an interior opening in the side;
- the mounting member extending into the groove and into the interior opening;
- a sliding connection between the ferrule and the mounting member extending along the groove;
- and a rotary connection between the blade and the mounting member in the interior opening;
- wherein when the broadhead impacts a target the blade and mounting member move rearwardly along the sliding connection and the blade rotates outwardly around the rotary connection.
3 more elements
An expanding-blade broadhead comprising:
- A. a ferrule having a longitudinal slot formed therein and grooves in the sides of the slot;
- B. a flat blade having opposed parallel sides and a thickness, a portion of the blade in the slot, an opening extending through the thickness of the portion of the blade in the slot;
- C. a spherical or spheroidal mounting member fitted in the opening, the mounting member including portions extending outwardly from the sides of the blade at the opening and into the grooves;
- D. sliding connections between the mounting member portions and the grooves in the sides of the slot;
- and
- E. a rotary connection between the blade and the mounting member, the rotary connection located in the opening;
- F. wherein when the broadhead hits a target the blade moves along the grooves and rotates outwardly around the mounting member.
4 more elements
Dependencies are inferred from the claim text.