Abstract: Disclosed herein is a hoist apparatus having a base frame, an arm, a hydraulic lift cylinder, and a contact fulcrum attached to the base frame. The arm has a base segment rotatably coupled to the base frame at a first joint, a middle segment rotatably coupled to the base segment at a second joint, and a coupling segment extendably coupled to the middle segment at a second arm joint, the coupling segment comprising a hook at a distal end of the coupling segment. The hydraulic lift cylinder is rotatably coupled at a first end to the base frame and rotatably coupled at a second end to the middle segment. In certain embodiments, the middle segment is contactable with the contact fulcrum during operation of the arm. Various implementations provide for a hoist apparatus that is disposable on a vehicle.

Abstract: A detachable body securing mechanism having first and second clamp arms that rotate toward the inside of longitudinal support members of a detachable body to clamp down on the longitudinal support members is disclosed. The first and second clamp arms are rotatably coupled to respective first and second ends of an elongated frame of the securing mechanism. The securing mechanism further includes an actuable piston with a piston body coupled to the first clamp arm and a piston coupled to the second clamp arm. In certain implementations, extension of the piston rotates the first and second clamp arms away from each other and the elongated frame into a clamping configuration for securing the detachable body. Retraction of the piston rotates the first and second clamp arms toward each other and the elongated frame into a retracted configuration for releasing the detachable body.

Abstract: A corner form apparatus having a rigid, angled form with a pair of leg sections and a plurality of gussets extending between the leg sections. A post is mounted for axial sliding back-and-forth movement within openings formed in the gussets between a pour position and a stripped position. A linear actuator is mounted between the rigid, angled form and the post and a pair of extension mounting arms are pivotally attached to the post at a first end and pivotally attached to each to an associated form extension using slotted holes at a second end whereupon movement of the post between the pour position and the stripping position moves each of the form extensions from a position coplanar with a corresponding one of the rigid, angled form leg sections in the pour position inwardly to a stripped position.

Abstract: A self-climbing concrete wall form hoist for forming a concrete wall section atop a previously formed wall section has a wall mounting releasably secured to the previously formed wall section, a plurality of moveable vertical masts, an extendable cylinder inside each mast, and a platform alternatively supported on the masts, which in turn are supported alternatively on the upper and lower wall mountings. The apparatus cycles between a platform raising position when the masts and platform are supported on the upper wall mounting and a lower wall mounting raising position when the masts and platform are supported on the upper wall mounting. The extendable cylinders are extended to raise the mast and platform relative to the lower wall mounting when the masts are supported on the upper wall mounting, and the extendable cylinders are retracted when raising the lower wall mounting relative to the platform when the masts and platform are supported on the upper wall mounting.

Abstract: Disclosed herein is a hoist apparatus having a base frame, an arm, a hydraulic lift cylinder, and a contact fulcrum attached to the base frame. The arm has a base segment rotatably coupled to the base frame at a first joint, a middle segment rotatably coupled to the base segment at a second joint, and a coupling segment extendably coupled to the middle segment at a second arm joint, the coupling segment comprising a hook at a distal end of the coupling segment. The hydraulic lift cylinder is rotatably coupled at a first end to the base frame and rotatably coupled at a second end to the middle segment. In certain embodiments, the middle segment is contactable with the contact fulcrum during operation of the arm. Various implementations provide for a hoist apparatus that is disposable on a vehicle.

Abstract: A corner form apparatus having a rigid, angled form with a pair of leg sections and a plurality of gussets extending between the leg sections. A post is mounted for axial sliding back-and-forth movement within openings formed in the gussets between a pour position and a stripped position. A linear actuator is mounted between the rigid, angled form and the post and a pair of extension mounting arms are pivotally attached to the post at a first end and pivotally attached to each to an associated form extension using slotted holes at a second end whereupon movement of the post between the pour position and the stripping position moves each of the form extensions from a position coplanar with a corresponding one of the rigid, angled form leg sections in the pour position inwardly to a stripped position.

Abstract: A self-climbing concrete wall form hoist for forming a concrete wall section atop a previously formed wall section has a wall mounting releasably secured to the previously formed wall section, a plurality of moveable vertical masts, an extendable cylinder inside each mast, and a platform alternatively supported on the masts, which in turn are supported alternatively on the upper and lower wall mountings. The apparatus cycles between a platform raising position when the masts and platform are supported on the upper wall mounting and a lower wall mounting raising position when the masts and platform are supported on the upper wall mounting. The extendable cylinders are extended to raise the mast and platform relative to the lower wall mounting when the masts are supported on the upper wall mounting, and the extendable cylinders are retracted when raising the lower wall mounting relative to the platform when the masts and platform are supported on the upper wall mounting.

Abstract: An adjustable height jib is disclosed for an arm of a hook-lift hoist for loading of equipment, containers or the like onto a truck for transport. The jib has an elongate body with a hook located on each of its opposing end portions. The jib is mounted on the arm for pivotal movement between a first position for loading containers of a first height and a second position for loading containers of a second height. A lock secures the jib in either position. A feature of the adjustable height jib is that, upon release of the lock, it will pivot between a longer position as the hook-lift hoist is operated toward the loading position and a shorter position as the hook lift hoist is operated toward the transport position.

Abstract: An overhead beam assembly of a concrete forming system. A wall-mounted self-climbing hoist is releasably secured to a wall section. An overhead beam assembly of a plurality of beam sections is supported on the hoist by columns. The overhead beam assembly includes a plurality of hubs that interconnect the beam sections to present a planar top surface and an assembly that is only as thick as a singly beam section. The novel overhead beam assembly has a substantially flat top surface and a single beam thickness.

Abstract: A corner form assembly for forming inside corners of concrete structures, including first form subassembly for forming a first surface of the concrete structure and a second form subassembly for forming a second surface of the concrete structure oriented at an angle less than 180° relative to the first surface. A corner form assembly is pivotally attached to the second form assembly for movement between a set position for forming the concrete structure and a folded position. The corner form assembly is releasably secured to the first form assembly when in the set position and is provided with a relief angle to permit folding of the second form assembly relative to the concrete structure.

Abstract: An adjustable height jib is disclosed for an arm of a hook-lift hoist for loading of equipment, containers or the like onto a truck for transport. The jib has an elongate body with a hook located on each of its opposing end portions. The jib is mounted on the arm for pivotal movement between a first position for loading containers of a first height and a second position for loading containers of a second height. A lock secures the jib in either position. A feature of the adjustable height jib is that, upon release of the lock, it will pivot between positions as the hook-lift hoist is operated toward the loading position.

Abstract: A container variability system for use with a hook-lift hoist mounted onto a wheeled chassis and including at least one hydraulic cylinder for loading a container onto the chassis and for tilting said container to a raised off-loading position. The hydraulic cylinder is responsible for the horizontal movement of the container on the main frame of the hoist through a telescopic jib member. A tab mounted off of the longsill of the container actuates a switch that prevents further extension of the cylinder.

Abstract: A self-climbing concrete wall form hoist for forming a concrete wall section atop a previously formed wall section has a wall mounting releasably secured to the previously formed wall section, a moveable vertical mast, a channel in the wall mounting which guideably receives the moveable mast, a platform alternatively supported on the mast and on the wall mounting, upper and lower dog latch assemblies mounted on the platform and pivotable between a platform raising position when the mast is supported on the wall mounting and a mast raising position when the platform is supported on the wall mounting, and an extensible and retractable linear actuator interconnecting the upper and lower dog latch assemblies for raising the platform relative to the mast when the dog latch assemblies are in the platform raising position and for raising the mast relative to the platform when the dog latch assemblies are in the mast raising position.