摘要:
A step stool includes a frame, a step coupled to the frame for pivotable movement, and a step lock. The step lock is used to lock the step to block pivotable movement of the step relative to the frame.
摘要:
A telescopic cover which relieves impact caused when a cover member is stopped moving and which is less meandering. A braking mechanism is provided between one of two adjacent cover members of the telescopic cover and the other of the two adjacent cover members which telescopically moves into and out of the one cover member. The braking mechanism is provided at a distal end portion of the one cover member, and has an elastic member that presses a slide member against the other cover member. When the other cover member moves relatively to the one cover member, a friction force generated by a pressing force of the slide member serves to brake the movement of the other cover member, whereby impact caused when the other cover member stops moving is relieved. The cover member in motion is always pressed by the slide member with an orientation thereof maintained.
摘要:
An inventive stepladder of tripod structure with an actuating mechanism that extends the rear legs and front step assembly in a coordinated manner to assume the tripod footprint. The actuating mechanism may include a vertical center post; a sliding collar journaled on the center post to coordinate the extension and retraction of the rear legs and step assembly; an A-brace for extending and retracting the step assembly and further serving as an auxiliary work platform for the uppermost step in the step assembly; leg braces for extending and retracting the rear legs, and a stop block attached to the lower end of the center post. A locking pin may be provided to secure the position of the sliding collar along the center post. The stop block may function to relieve shear stress on the locking pin and to provide support for a user's weight on the A-brace.
摘要:
A storage bin is integrated into a ladder, providing secure storage for tools or other items used when working on a ladder. The storage bin is attached to the top step of the ladder. On the upper surface of the ladder is a storage bin lid which opens to reveal the contents of the storage bin. The storage bin lid is securely held in the closed position by a latching mechanism. The storage bin may also include pockets or storage trays for tools or fasteners.
摘要:
A method for manufacturing a rail for a ladder. The method may include pultruding in a longitudinal direction, a rail having a selected cross-sectional shape. The rail may then be cut to a predetermined length at a distal end. A force may be applied, in a lateral direction, to the rail to form a curvature therein. The curvature may be characterized by a flared portion, a straight portion, and a curved region providing the transition therebetween. The rail may be held at the desired curvature for a time selected for the rail to take on the curvature substantially permanently. The force may then be removed and the rail may be assembled into a ladder.
摘要:
A foldable stairway ladder for use in accessing items includes a structure that can be conveniently folded to reduce the amount of space taken up by ladder when not in use. The ladder consists of a stairway section connected to a platform, in turn rotatably connected to a support. The foldable ladder is also provided with a manually operable folding system adapted to fold the stairway section and support relative to each other. Additionally, the support may have a member capable of extending the length of the support, thus facilitating the ease by which a use can fold the stairway ladder.
摘要:
A scissors-type work platform lift machine includes a mobile chassis having rear stationary wheels and front steerable wheels, a scissors lift mechanism mounted at a lower end on the chassis, a work platform mounted on an upper end of the lift mechanism, and an electro-mechanical actuation arrangement for operating the lift mechanism between retracted and expanded conditions so as to move the work platform between lowered and raised positions. The electro-mechanical actuation arrangement is mounted to and extends between the mobile chassis and the lower end of the lift mechanism and has a ballscrew shaft operable to rotate in a first angular direction and cause movement of the lift mechanism vertically toward the retracted condition and thereby movement of the work platform toward the lowered position and to rotate in a second angular direction opposite to the first angular direction and cause movement of the lift mechanism vertically toward the expanded condition and thereby movement of the work platform toward the raised position. The actuation arrangement also has an upper joint pivotally and threadably coupling an upper portion of the ballscrew shaft to the lower end of the lift mechanism and a lower joint coupling a lower portion of the ballscrew shaft to the chassis for undergoing limited universal pivotal movement relative thereto. The actuation arrangement further includes an electric motor drivingly coupled to the lower portion of the ballscrew shaft below the lower joint.
摘要:
A self-supporting collapsible ladder comprising a plurality of ladder sections with pin-locking mechanisms which secure adjacent ladder sections into an extended position. The ladder has a mechanism for self-supporting the ladder assembly by the use of braces attached to the ladder which are rotated and held in place by support rails which can be extended when in use.
摘要:
An automatic foldable emergency ladder system for use in a building having a smoke detecting device includes an inverted L-shaped housing having a horizontal portion and a vertical portion and being securely mounted to a perimeter wall of a roof of the building; a control unit mounted in the horizontal portion of the housing and having at least one input port for receiving a signal from the smoke detecting device; an electrically powered driving device mounted in the horizontal portion of the housing and electrically connected to the control unit for receiving a signal therefrom and being activated/deactivated therefor; a spool unit rotatably mounted in the housing and driven by the driving device; a foldable ladder securely coupled to the vertical portion of the housing at one end thereof and having at least one wire which is secured to the spool means at one end thereof and an opposite end thereof is coupled to a free end of the foldable ladder such that the ladder can be folded/extended by the spool unit; and a display device electrically connected to the control unit for displaying the status of the system.
摘要:
The present invention is a ladder top for a ladder. The ladder top has a top panel having a perimeter. The perimeter has at least a first edge, a second edge, a third edge and a fourth edge. The ladder top also has a first side wall extending in an integral fashion from the first edge, and an opposing second side wall extending in an integral fashion from the second edge. The first side wall has at least one slot through which accessories can be attached. A third side wall extends in an integral fashion from the third edge and in juxtaposition with the first and second side walls. A fourth side wall extends in an integral fashion from the fourth edge and in juxtaposition with the first and second side walls and opposing the third side wall. The ladder is connected to the ladder top through the third and fourth side walls. Preferably, the first side wall has two slots in a spaced relationship with each other. Preferably, the slots are rectangularly shaped with rounded ends. Preferably, the top panel has buttressing integrally joined and extending from its underside for strengthening the top panel.