Abstract: Adjustable ladders may include a pair of side rails having a plurality of rungs extending therebetween, and a pair of adjustable legs associated with the side rails. A pair of swing arms may include a first end pivotally coupled with a side rail, or a bracket associated with the side rail, as well as a second end pivotally coupled with an adjustable leg. The swing arm may be configured as a nonlinear structure. In one embodiment, the swing arm may include a first section that extends from a second section at a defined angle. The first and second sections may exhibit different lengths. Adjustment mechanisms may be pivotally coupled with an upper end of the adjustable legs. In one embodiment, the adjustment mechanisms may be configured such that, when actuated, they may be displaced in one direction while resisting displacement in a second, opposite direction.

Abstract: Adjustable ladders may include a pair of side rails having a plurality of rungs extending therebetween, and a pair of adjustable legs associated with the side rails. A pair of swing arms may include a first end pivotally coupled with a side rail, or a bracket associated with the side rail, as well as a second end pivotally coupled with an adjustable leg. The swing arm may be configured as a nonlinear structure. In one embodiment, the swing arm may include a first section that extends from a second section at a defined angle. The first and second sections may exhibit different lengths. Adjustment mechanisms may be pivotally coupled with an upper end of the adjustable legs. In one embodiment, the adjustment mechanisms may be configured such that, when actuated, they may be displaced in one direction while resisting displacement in a second, opposite direction.

Abstract: An automatic locking system for a self-adjustable leveling ladder engages when the ladder is placed on the ground and disengages when the ladder is lifted off the ground. The automatic locking system includes a clamping mechanism, a first support, and a second support. The clamping mechanism includes a first member, a second member, a central pivot, a pair of key plates, and a cross rail. The first support pivotally connects to the first member, and the second support pivotally connects to the second member. The first member hingedly connects to the second member by the central pivot, which allows the key plates to grasp the cross rail if the first support and the second support are pressed against the ground. The first member and the second member are able to slide along the cross rail, which properly adjusts the first support and the second support for an uneven ground surface.

Abstract: Adjustable ladders may include a pair of side rails having a plurality of rungs extending therebetween, and a pair of adjustable legs associated with the side rails. A pair of swing arms may include a first end pivotally coupled with a side rail, or a bracket associated with the side rail, as well as a second end pivotally coupled with an adjustable leg. The swing arm may be configured as a nonlinear structure. In one embodiment, the swing arm may include a first section that extends from a second section at a defined angle. The first and second sections may exhibit different lengths. Adjustment mechanisms may be pivotally coupled with an upper end of the adjustable legs. In one embodiment, the adjustment mechanisms may be configured such that, when actuated, they may be displaced in one direction while resisting displacement in a second, opposite direction.

Abstract: An automatic locking system for a self-adjustable leveling ladder engages when the ladder is placed on the ground and disengages when the ladder is lifted off the ground. The automatic locking system includes a clamping mechanism, a first support, and a second support. The clamping mechanism includes a first member, a second member, a central pivot, a pair of key plates, and a cross rail. The first support pivotally connects to the first member, and the second support pivotally connects to the second member. The first member hingedly connects to the second member by the central pivot, which allows the key plates to grasp the cross rail if the first support and the second support are pressed against the ground. The first member and the second member are able to slide along the cross rail, which properly adjusts the first support and the second support for an uneven ground surface.

Abstract: A measurement marking and scoring device includes a platform configured to be affixed to a base of a tape measure. A marking member extends from the platform and defines a sharpened edge or point marking surface at a lower end thereof. An alignment tab extends from the marking member so as to be positioned over indicia of a tape extended from the tape measure so that measurement marks or score lines can be created on a working surface upon application of pressure to the marking member or tape measure. In another form, the device is integrally formed into a tape measure such that the marking member extends from a front edge of the tape measure.

Abstract: A measurement marking and scoring device includes a platform configured to be affixed to a base of a tape measure. A marking member extends from the platform and defines a sharpened edge or point marking surface at a lower end thereof. An alignment tab extends from the marking member so as to be positioned over indicia of a tape extended from the tape measure so that measurement marks or score lines can be created on a working surface upon application of pressure to the marking member or tape measure. In another form, the device is integrally formed into a tape measure such that the marking member extends from a front edge of the tape measure.

Abstract: A hand tool for gripping and moving building materials includes a linkage having a grip at a first end. A plate having a gripping face is pivotally attached to a second end of the linkage. A generally U-shaped bracket is pivotally attached to the linkage adjacent to the plate and extends beyond the second end of the linkage so that a gripping face thereof is disposed generally opposite the plate gripping face. Upon inserting a building material between the plate and bracket gripping faces and lifting the linkage upwardly, the plate and bracket pivot so that the gripping faces firmly contact and grip opposite sides of the building material for transport.

Abstract: A hand tool for gripping and moving building materials includes a linkage having a grip at a first end. A plate having a gripping face is pivotally attached to a second end of the linkage. A generally U-shaped bracket is pivotally attached to the linkage adjacent to the plate and extends beyond the second end of the linkage so that a gripping face thereof is disposed generally opposite the plate gripping face. Upon inserting a building material between the plate and bracket gripping faces and lifting the linkage upwardly, the plate and bracket pivot so that the gripping faces firmly contact and grip opposite sides of the building material for transport.