Bird removal device
AssigneeAvian Systems Corporation
InventorCharles Stephen Price
Life of this patent
Estimating the term…
Abstract
A mechanical bird removal device, wherein a bow string is pulled taut, by means of a tow line, across an area to be swept free of unwanted birds. Upon activation of the device, the tow line is allowed to momentarily “free wheel”, thus releasing the bow string to sweep across the area, thus scaring or physically forcing the birds away. Once the area has been swept free of birds, the tow line once again is reeled in and thus resets the bow string for the next cycle.
Claims17
A bird removal device for removing birds from a perching surface, comprising:
- first and second anchor points defining a line substantially parallel to said perching surface;
- a cord to sweep horizontally across the perching surface, said cord defining a first, released position, and a second, cocked position, one of said positions being when said cord is extending taut between said first and second anchor points;
- a powered retractor, connected to said cord so as to pull said cord to its second, cocked position;
- and
- a non-powered, mechanical retractor, which pulls said cord to its released position when the powered retractor is released.
A bird removal device for driving birds off a substantially horizontal perching surface, comprising:
- a powered retractor, including a motor;
- a wind-up spool driven by said motor;
- and a release, which permits the wind-up spool to freewheel;
- a cord, mounted substantially parallel to and within one foot of said perching surface, wherein said powered retractor, when activated, pulls said cord to a first position;
- and
- a spring, which pulls said cord to a second position when said wind-up spool is freewheeling, so as to cause said cord to sweep across said perching surface.
A bird removal device for removing birds from a surface, comprising:
- first and second anchor points;
- a cord to sweep across the surface, said cord defining a first, released position, and a second, cocked position, one of said positions being when said cord is extending taut between said first and second anchor points;
- a powered retractor, connected to said cord so as to pull said cord to its second, cocked position;
- and
- a non-powered, mechanical retractor, which pulls said cord to its released position when the powered retractor is released, wherein said powered retractor includes a driven spool and a tow line with first and second ends, said first end being secured to said cord, and said second end being secured to said driven spool such that, when said driven spool rotates, said tow line winds up onto said driven spool, pulling said cord to its second, cocked position.
Dependencies are inferred from the claim text.