Door viewer plug
OwnerShan E. Harterinventor
Life of this patent
Estimating the term…
Abstract
A readily available conventional commercial door viewer includes a lens at one end for providing a wide angle view and a hollow end through which a person would look. A truncated cone shaped plug fits within the hollow end to block light transmission through the door viewer. The plug is readily manually removable to use the door viewer and includes a removable lanyard to tether the plug in proximity to the door viewer.
Claims20
A security device for regulating light transmission through a conventional door viewer mounted in a door, said device comprising in combination:
- a) a plug demountably mountable with the door viewer for preventing light transmission through the door viewer;
- b) a lanyard for retaining said plug attached to the door viewer;
- and
- c) attachment means for securing said plug to the door viewer, said attachment means including a section for engagement with the door viewer.
A method for controlling light transmission through a conventional door viewer having a hollow end and being mounted in a door, said method comprising the steps of:
- a) demountably mounting a plug in the hollow end;
- b) retaining the plug attached to the door through an attachment means;
- and
- c) securing a section of the attachment means to the door viewer.
A security device for controlling light transmission through a conventional door viewer, which door viewer includes a cylinder supporting a lens system and a sleeve having a hollow end threadedly attached to the cylinder to mount the door viewer in a door, said securing device comprising in combination:
- a) a plug adapted for engagement with the hollow end;
- b) a flexible lanyard extending from said plug;
- and
- c) a section of said lanyard adapted to be captured between the sleeve and the door.
Dependencies are inferred from the claim text.