A pin assist device that eliminates the need to use a separate tool to insert and/or extract a cotter, or other fastening, pin. The pin assist device allows the user to easily insert or extract a pin in locations that are difficult to reach, in all types of weather and virtually all conditions. Related pin assist devices, hitch pins, and hitch pin assemblies are also disclosed.

A spike puller for pulling a railroad spike of a track includes a housing, a linear displacement unit mounted at the housing, and a claw unit for gripping the railroad spike. The claw unit is displaceable in a linear manner relative to the housing in a displacement direction by using the linear displacement unit. The linear displacement unit includes a hollow tube which is guided in the housing. A method for pulling a railroad spike of a track is also provided.

A pin assist device that eliminates the need to use a separate tool to insert and/or extract a cotter, or other fastening, pin. The pin assist device allows the user to easily insert or extract a pin in locations that are difficult to reach, in all types of weather and virtually all conditions. Related pin assist devices, hitch pins, and hitch pin assemblies are also disclosed.

Devices and methods for assembling a luer lock fitting (e.g., fitting for use in a hemodialysis and/or a peritoneal dialysis machine) may include a luer lock tool comprising a tool base including a grip portion adjacent a tool portion, the grip portion having an outer diameter and an internal cavity. The tool portion may have an internal cavity and may be configured to selectively receive and retain a male luer lock fitting at a first end of the cavity. A tool cap may have an outer diameter and an internal cavity. The tool cap may include a recessed portion at an end configured to selectively receive and retain a female luer lock fitting. The tool cap internal cavity may be configured to receive at least a portion of the tool portion of the tool base.

A treatment assembly for a drain is provided. The treatment assembly includes a skirt configured for covering the drain and a basket assembly configured for being received beneath the skirt and between an opening of the drain. The basket assembly contains a treatment material for providing treatment to the drain. A related method is also disclosed.

The present invention relates in general to the field of securing structural members to masonry, and more specifically, to a drop-in anchor setting tool and method of use. The drop-in anchor setting tool includes a hands-free safety feature that allows the drop-in anchor and setting tool to remain embedded in the masonry during installation. In particular, the drop-in anchor setting tool includes a threaded portion configured to screw together the drop-in anchor and the drop-in anchor setting tool during installation. A purpose of invention is to provide a drop-in anchor setting tool and method of use that minimizes risk of injury to the operator during installation, is easy to use, and cost-effective to manufacture.

An apparatus for removing a knockout region from a saw blade includes an elongate body having a center axis. A distal end of the elongate body can include a head, having a concave region, wherein the concave region has a fulcrum section. A slot includes a first surface and a second surface opposite the second surface. The first surface and the second surface preferably are separated be a width greater than the thickness of the saw blade. The slot is positioned rearward of the concave region and is angled at a substantially acute angle relative to the center axis. The concave region is sized and shaped such that the fulcrum section contacts a first face of the saw blade and the slot is sized and shaped such that the first surface of the slot contacts a second face of the saw blade. Preferably, the fulcrum region engages the first region and the slot engages the second portion at the same time.

Devices and methods based upon the concept of a split ring (604) having certain multiple interior angles (604a, 604b) to engage a stem or post (608) having annular ring(s) with angular geometries that are complimentary to those of the split ring. The disclosure provides designs for a wide range of insertion and desertion forces between latch engagement stems and latch engagement bodies. Changes to insertion contact angles and contact area on engagement stems and corresponding changes to insertion contact angles and engagement areas on engagement bodies can significantly modify insertion forces required to engage various devices. Similarly, changes in degrees of angle between desertion angles and contact areas on engagement stems with corresponding changes in desertion angles and contact areas on engagement bodies will significantly modify the total desertion forces required to disengage various devices. Accordingly, the instant latching mechanism provides insertion and desertion forces that can be controlled independently of each other.

A tool for removing a fastener head from a fastener includes a body that includes an alignment surface configured to couple substantially flush against a structural surface proximate the fastener head. A blade coupled to the body includes a tip configured to sever the fastener head from the fastener as the blade is moved in a first direction generally parallel to the alignment surface from a first blade position to a second blade position. The tool also includes a force transfer member coupled to the body for movement parallel to a longitudinal axis of the force transfer member. The longitudinal axis is oriented at an acute angle with respect to the first direction. The force transfer member is configured to move the blade from the first blade position to the second blade position in response to an impulse received by the force transfer member.