초록 ▼

A one-directional captive screw attachable to a panel that is hand tightenable, but requires a tool to loosen once hand tightened. The captive screw includes a screw having a head with a recess and a threaded portion, a knob having a central longitudinal axis coaxial with the screw, a one-directiona

A one-directional captive screw attachable to a panel that is hand tightenable, but requires a tool to loosen once hand tightened. The captive screw includes a screw having a head with a recess and a threaded portion, a knob having a central longitudinal axis coaxial with the screw, a one-directional ratchet between the knob and the screw. The ratchet engages to allow the screw to be tightened in a clockwise direction using the knob, and disengages when rotated in a counterclockwise direction, such that a tool is required to loosen the screw by use of the recess.

대표청구항 ▼

[ We claim:] [1.] A captive fastener attachable to a panel, to secure said panel to a second panel, that is hand tightenable to secure said panels to one another, but requires a tool to loosen said panels from one another once hand tightened, comprising:(a) a screw comprising:(i) a head with a reces

[ We claim:] [1.] A captive fastener attachable to a panel, to secure said panel to a second panel, that is hand tightenable to secure said panels to one another, but requires a tool to loosen said panels from one another once hand tightened, comprising:(a) a screw comprising:(i) a head with a recess means to facilitate rotation;(ii) a threaded portion;(b) a knob having a central longitudinal axis coaxial with said screw, said screw rotatingly disposed within said knob in a counterclockwise direction, and rigidly disposed within said knob in a counterclockwise direction; and(c) a one-directional ratchet means disposed between said knob and said screw that engages to allow said screw to be tightened in a clockwise direction using said knob, and disengages when rotated in a counterclockwise direction, such that a tool is required to loosen said screw using said recess means.