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US 8,132,435 B2Granted
Locking apparatus
OwnerRoy Thomas, John Tradewellinventors
Life of this patent
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Abstract
A locking apparatus having a body, at least one arm and a tapered member; wherein relative movement between the arm and the tapered member extends the arm from the body. In use, the arm is arranged to press against a wall of a channel to hold the locking apparatus in place and prevent the opening of a roller shutter.
Claims14
A locking apparatus for securing a roller shutter within a guide channel having an aperture formed therein, the locking apparatus comprising:
- a hollow tubular body having an enlarged end and an elongated section sized to fit within the aperture, the tubular body further including a tapered member fixed therein and a radial opening;
- a threaded locking member coaxial with the tubular body having a head portion and an elongate threaded shaft extending past the tapered member;
- an advancer threadedly connected to the threaded shaft such that the advancer is enabled to move axially along the shaft as the shaft rotates;
- and
- a arm having a pivot end connected to the advancer and a free end oriented between the advancer and the enlarged end, so that when the advancer is spaced away from the enlarged end the arm is retained within the tubular body, and when the advancer moves towards the enlarged end the arm cooperates with the tapered member to extend radially outward through the radial opening.
2 more elements
Dependencies are inferred from the claim text.