The elevating lift with a stabilized movable base includes a base with extendable legs that provide minimum to maximum adjustable stability during use and transport. A lift system is mounted on the base, and a platform assembly is mounted on top of the lift system for selective raising or lowering. Each extendable leg supports a caster, rendering the base movable, and selective extension and retraction of the legs adjusts the stability of the lift. The plurality of legs can be further driven to simultaneously rotate about the vertical axis to steer the lift. The stabilized movable base is further alternatively used in combination with a stool, providing minimum to maximum stability during use and transport of seating, and multiple to elevating lifts may be used to support linked platform assemblies in various configurations.

A mobile well service unit has: a structural frame such as a chassis with ground engaging members; and a telescoping platform assembly mounted at a rear end of the structural frame, the telescoping platform assembly having a lower platform mounted to slide up and down relative to the structural frame, and an upper platform mounted to the lower platform to slide up and down relative to the lower platform. A mobile well service unit has: a structural frame with ground engaging members; a platform mounted at a rear end of the structural frame to slide up and down relative to the structural frame; and a set of telescoping and self-levelling stairs with an upper end pivotally anchored to the platform, and a lower end pivotally anchored to the structural frame.

A mobile well service unit has: a structural frame such as a chassis with ground engaging members; and a telescoping platform assembly mounted at a rear end of the structural frame, the telescoping platform assembly having a lower platform mounted to slide up and down relative to the structural frame, and an upper platform mounted to the lower platform to slide up and down relative to the lower platform. A mobile well service unit has: a structural frame with ground engaging members; a platform mounted at a rear end of the structural frame to slide up and down relative to the structural frame; and a set of telescoping and self-levelling stairs with an upper end pivotally anchored to the platform, and a lower end pivotally anchored to the structural frame.

The present invention is an improved apparatus and method for forming a retractable tower or column. The present invention includes pointed hooks wherein the hooks are attached to each section of a section chain, one in a horizontal direction and one in an off-set manner. The section chains are placed on a take up mechanism in an operable position and then raised utilizing a motor. As the section chains are raised, they are guided by a guide tower, rollers, shims, and gear racks into a position whereby hooks from adjacent sections of the section chains form coupled engagements. The coupled engagement of the hooks of the sections of each adjacent section chains thereby form the column.

The present invention is an improved apparatus and method for forming a retractable tower or column. The present invention includes pointed hooks wherein the hooks are attached to each section of a section chain, one in a horizontal direction and one in an off-set manner. The section chains are placed on a take up mechanism in an operable position and then raised utilizing a motor. As the section chains are raised, they are guided by a guide tower, rollers, shims, and gear racks into a position whereby hooks from adjacent sections of the section chains form coupled engagements. The coupled engagement of the hooks of the sections of each adjacent section chains thereby form the column.

A formwork support system comprising: a first pair of support props, a second pair of support props, a longitudinal beam with opposite ends attached to the first pair of support props, a longitudinal support with opposite ends attached to the second pair of support props, a cantilever beam extending transversely to the longitudinal beam and the longitudinal support, respectively, the cantilever beam being supported on an upper side of the longitudinal support, the cantilever beam having a first end secured to the longitudinal beam.

A lift device includes a base, a platform that is repositionable relative to the base between a fully raised position and a fully lowered position, a scissor assembly coupling the base to the platform, and a booster. The scissor assembly includes a scissor layer including a first scissor arm pivotally coupled to a second scissor arm, a pulley coupled to the scissor layer, a tensile member wrapped around the pulley, and an actuator configured to vary a working length of the tensile member such that the first scissor arm rotates relative to the second scissor arm to move the platform relative to the base. A booster is positioned to engage a portion of the tensile member and apply an upward force on the scissor assembly when the platform is in the fully lowered position.

A lift device includes a base, a platform that is repositionable relative to the base between a fully raised position and a fully lowered position, a scissor assembly coupling the base to the platform, and a booster. The scissor assembly includes a scissor layer including a first scissor arm pivotally coupled to a second scissor arm, a pulley coupled to the scissor layer, a tensile member wrapped around the pulley, and an actuator configured to vary a working length of the tensile member such that the first scissor arm rotates relative to the second scissor arm to move the platform relative to the base. A booster is positioned to engage a portion of the tensile member and apply an upward force on the scissor assembly when the platform is in the fully lowered position.

Various embodiments of the present disclosure provides a joint edge assembly and a reusable multiple position height adjuster and method of positioning and installing joint edge assembly and the reusable multiple position height adjuster for forming two adjacent concrete slabs and a joint between such adjacent concrete slabs.

The present invention is an improved apparatus and method for forming a retractable tower or column. The present invention includes pointed hooks wherein the hooks are attached to each section of a section chain, one in a horizontal direction and one in an off-set manner. The section chains are placed on a take up mechanism in an operable position and then raised utilizing a motor. As the section chains are raised, they are guided by a guide tower, rollers, shims, and gear racks into a position whereby hooks from adjacent sections of the section chains form coupled engagements. The coupled engagement of the hooks of the sections of each adjacent section chains thereby form the column.