Folding knife with locking mechanism
View Patent ↗A folding knife includes a blade, the blade including a stud and a notch on a top portion of the blade. The folding knife also includes an outer handle including an interior side and a first pivot securing the blade to the outer handle, and the blade is configured to rotate about first pivot. The folding knife also includes a liner/inner handle which is configured to rotate about a second pivot forwardly out of the outer handle to engage the stud. The folding knife also includes a detent mechanism which is configured to releasably retain the blade in a closed/undeployed position and the liner/inner handle.
1 . A folding knife, comprising:
a blade comprising:
a stud, and
a notch on a top portion of the blade;
an outer handle comprising an interior side and a first pivot securing the blade to the outer handle, the blade configured to rotate about the first pivot;
a liner/inner handle configured to rotate about a second pivot forwardly out of the outer handle to engage the stud; and
a detent mechanism configured to releasably retain (i) the blade in a closed/undeployed position and (ii) the liner/inner handle.
2 . The folding knife according to claim 1 , wherein the liner/inner handle is configured to rotate forwardly by 30 degrees relative to the outer handle out of the outer handle.
3 . The folding knife according to claim 1 , wherein the liner/inner handle is configured to apply force to the stud of the blade to deploy the blade from the closed/undeployed position to an open/deployed position.
4 . The folding knife according to claim 1 , wherein the liner/inner handle comprises a deployment/unlocking tab at a top portion of the liner/inner handle, a lock peg, and the second pivot.
5 . The folding knife according to claim 4 , wherein the lock peg is configured to interface with the notch of the blade in an open/deployed position.
6 . The folding knife according to claim 4 , wherein the second pivot spans the liner/inner handle and the outer handle.
7 . The folding knife according to claim 4 , wherein the second pivot is configured to interface with a base portion of the blade in an open/deployed position.
8 . The folding knife according to claim 1 , wherein the detent mechanism comprises a magnet on the interior side of the outer handle.
9 . The folding knife according to claim 8 , wherein the liner/inner handle comprises two liners which interface with the magnet, the two liners comprising steel.
10 . The folding knife according to claim 8 , wherein the magnet comprises two magnets opposing each other which correspondingly interface with two liners of the liner/inner handle.
11 . The folding knife according to claim 8 , wherein the magnet comprises a side portion, a bottom portion, and a top flat portion.
12 . The folding knife according to claim 11 , wherein the side portion and the top flat portion interface with the liner/inner handle and the blade, respectively.
13 . The folding knife according to claim 11 , wherein the bottom portion is fixed to the interior side of the outer handle.
14 . The folding knife according to claim 8 , wherein the liner/inner handle comprises a cutout accommodating a side portion of the magnet so that
the side portion of the magnet is able to have unobstructed magnetic attraction to the liner/inner handle, and
a top flat portion of the magnet is able to have unobstructed magnetic attraction with the blade.
15 . The folding knife according to claim 14 , wherein the cutout is located in a middle region of the liner/inner handle.
16 . A method of operating a folding knife, the folding knife comprising:
a blade comprising:
a stud, and
a notch on a top portion of the blade;
an outer handle comprising an interior side and a first pivot securing the blade to the outer handle, the blade configured to rotate about the first pivot;
a liner/inner handle configured to rotate about a second pivot forwardly out of the outer handle to engage the stud; and
a detent mechanism configured to releasably retain (i) the blade in a closed/undeployed position and (ii) the liner/inner handle,
wherein the liner/inner handle comprises a deployment/unlocking tab at a top portion of the liner/inner handle, a lock peg, and the second pivot, and
the method comprising applying a downward force to the deployment/unlocking tab rotating the liner/inner handle in a forward direction out of the outer handle.
17 . The method according to claim 16 , wherein the liner/inner handle while rotating applies, to the stud fixed to the blade, a forward force pushing out the blade so the folding knife is in an open/deployed position.
18 . The method according to claim 16 , wherein the liner/inner handle, while rotating forwardly, forms an X-shape with respect to the outer handle before rotating rearwardly back into the outer handle.
19 . The method according to claim 16 , the method further comprising retaining the blade in the closed/undeployed position via applying a magnetic force to the blade and the liner/inner handle.
20 . A method of operating a folding knife, the folding knife comprising:
a blade comprising:
a stud, and
a notch on a top portion of the blade;
an outer handle comprising an interior side and a first pivot securing the blade to the outer handle, the blade configured to rotate about the first pivot;
a liner/inner handle configured to rotate about a second pivot forwardly out of the outer handle to engage the stud; and
a detent mechanism configured to releasably retain (i) the blade in a closed/undeployed position and (ii) the liner/inner handle,
wherein the liner/inner handle comprises a deployment/unlocking tab at a top portion of the liner/inner handle, a lock peg, and the second pivot, and
the method comprising simultaneously applying of pressure on (i) the outer handle, (ii) a mating region/portion, the mating region/portion being formed by the notch and a lock peg of the liner/inner handle, and (iii) a tang of the blade abutting against the second pivot, and the greater the applying of pressure the tighter the locking of the folding knife in an open/deployed position.