Hidden recess furniture screw and driver system
OwnerAndrew J. Kleininventor
Life of this patent
Estimating the term…
Abstract
A fastener and a specialized driver, the fastener comprising a fastener head with aperture centered therein and fastener body extending from connection with the fastener head. The fastener body has an interior cavity along a length of the fastener body and a spring biased plunger is slidable within an interior cavity of the fastener body between a first position where the plunger has a surface configured to fit within the aperture and in a second position the plunger is spaced apart from the aperture. The driver is removably coupleable to the fastener to depress the plunger and transfer torque to the fastener for installation without damage to the fastener.
Claims13
A fastener system comprising:
- a fastener head having an aperture therein for receiving a head of a plunger;
- a fastener body having an externally threaded length and an open cavity along a length thereof;
- a driver having driver head with a protrusion thereon with dimensions of the protrusion substantially matching dimensions of the aperture in the fastener head and the driver having an undercut portion between the driver head and protrusion thereof allowing for transfer of torque from the driver to the fastener head without damage thereto,
- wherein the plunger head is slidable within a depth of the aperture of the fastener head from a first position wherein a top surface of the head of the plunger is flush with a top surface of the fastener head thus obscuring the aperture in the fastener head and a second position wherein the top surface of the head of the plunger is below the top surface of the fastener head.
A method of using a fastener comprising:
- contacting a driver head of a driver with the fastener and moving a plunger head of the fastener from a first position within the fastener head to a second position within the fastener head;
- and
- rotating the driver and transferring torque from the driver head to the fastener head to rotate the fastener head and fastener body coupled thereto, wherein the driver head has an undercut surface between the driver head and driver body for preventing damage to the fastener when rotating the driver.
A method of making a hidden recess fastener comprising:
- coupling an externally threaded rod to an internally threaded length of an aperture in a fastener head;
- inserting a spring and a plunger between the externally threaded rod and fastener head;
- pressing the plunger against a back side of the fastener head and at least partially through an aperture in the fastener head by screwing the threaded rod into the fastener head until the threaded rod contacts the plunger and biases the plunger firmly into the fastener head and at least partially through the aperture in the fastener head
- grinding the fastener head and plunger passing through the aperture concurrently;
- and
- releasing the plunger from contact with the threaded rod and at least partially unscrewing the threaded rod from the fastener head until an overall length of the fastener meets a predetermined specification of the fastener.
Dependencies are inferred from the claim text.