LADDAR RAIL LOCK
A ladder rail lock for extendable ladders having slidable rails that includes a body, a handle, and a plug in which the handle can move from a locked position in a crevice of the body to an unlocked position in a notch with a rampart between the crevice and the notch to facilitate transition between locked and unlocked positions.
1 . A ladder rail lock comprising:
a base comprising:
a main body having a length and a width forming a footprint, and a height;
a cylinder having a height and diameter;
a cylinder plug orifice having a channel with a channel diameter;
a plug stop;
a handle crevice;
a handle notch; and
a rampart between the handle crevice and the handle notch;
a handle having a locked and an unlocked position comprising;
a wing with a wing end;
a cylinder channel; and
a base contact surface;
a plug comprising;
a shaft;
a head; and
a shoulder; and
a biasing member coaxial with the plug shaft.
2 . The ladder rail lock of claim 1 wherein the handle base contact surface is abutting the base handle crevice when the rail lock is in the locked position.
3 . The ladder rail lock of claim 2 wherein the handle base contact surface is abutting the base handle notch when the rail lock is in the unlocked position.
4 . The ladder rail lock of claim 3 wherein the handle can rotate coaxially with the base cylinder and wherein when the handle rotates coaxially with the base cylinder the handle base contact surface contacts the rampart.
5 . The ladder rail lock of claim 4 wherein the main body length and width are substantially equal.
6 . The ladder rail lock of claim 4 wherein the base cylinder is at least partially within the handle cylinder channel.
7 . The ladder rail lock of claim 4 wherein the wing end extends beyond the footprint of the base main body in both the locked and unlocked positions.
8 . The ladder rail lock of claim 4 wherein the base main body comprises a lip on the sides of the base main body with handle notches.
9 . The ladder rail lock of claim 4 wherein the base main body comprises a bolt head slot and bolt shaft orifice.
10 . The ladder rail lock of claim 9 wherein the bolt head slot is hexagonal.
11 . The ladder rail lock of claim 1 wherein the biasing member is a spring and the spring rests between the plug shoulder and the base plug stop.
12 . The ladder rail lock of claim 1 wherein the handle base contact surface is non-planar.
13 . An extension ladder comprising:
an outer rail having an outer surface and corner;
an inner rail slidable in relation to the outer rail;
a ladder rail lock mounted to the outer surface comprising:
a base comprising:
a main body comprising a footprint;
a cylinder;
a cylinder plug orifice having a channel;
a plug stop;
a handle crevice;
a handle notch;
a rampart between the handle crevice and the handle notch; and
a lip that wraps at least partially around the corner of the outer rail;
a handle having a locked and an unlocked position comprising;
a wing;
a cylinder channel; and
a base contact surface;
a plug comprising;
a shaft;
a head; and
a shoulder; and
a biasing member.
14 . The extension ladder of claim 13 wherein the handle base contact surface is abutting the base handle crevice when the rail lock is in the locked position.
15 . The extension ladder of claim 14 wherein the handle base contact surface is abutting the base handle notch when the rail lock is in the unlocked position.
16 . The extension ladder of claim 15 wherein the biasing member is a spring, and the spring is coaxial to the plug shaft and rests between the plug shoulder and the base plug stop.
17 . The extension ladder of claim 16 wherein the wing comprises a wing end and the wing end extends beyond the footprint of the base main body in both the locked and unlocked positions.
18 . The l extension ladder of claim 17 wherein the handle base contact surface is non-planar.
19 . The extension ladder of claim 18 wherein the main body comprises a length and a width and the length and width are substantially equal.
20 . A ladder rail lock comprising:
a base comprising:
a main body comprising a footprint;
a cylinder;
a cylinder plug orifice having a channel;
a plug stop;
a handle crevice;
a handle notch;
a rampart between the handle crevice and the handle notch; and
a lip;
a handle having a locked and an unlocked position comprising;
a wing comprising a wing end wherein the wing end extends beyond the main body footprint in both the locked and unlocked positions;
a cylinder channel; and
a non-linear base contact surface;
a plug comprising;
a shaft;
a head; and
a shoulder; and
a spring coaxial to the plug shaft located between the plug shaft shoulder and the base plug stop.