Door frame assembly that includes a frame that defines an opening therein for allowing access therethrough. The door frame also includes a door pivotably coupled to a first vertical wire of the of the frame for pivoting the door between an open position and a closed position. The door frame further includes a first coupling mechanism and a second coupling mechanism. The first coupling mechanism releasably couples the door to the frame and is formed by a first horizontal wire. The first horizontal wire forms a hooked end protruding outward toward the door and spaced inwardly of the frame to intersect with the opening. The second coupling mechanism releasably couples the door to the frame. The second coupling mechanism includes a portion configured to limit movement of the door relative to the frame until the second portion is pivoted in a direction toward the door.

In some examples, a system includes a plurality of posts and a plurality of cage panels, wherein each of the cage panels is removably coupled to one or more of the plurality of posts, wherein a nominal width of each of the cage panels is congruent based on a modulus, wherein an actual width of each of the cage panels is equal to a difference between the nominal width of the cage panel and the width of one of the plurality of posts, and wherein any combination of a subset of the plurality of cage panels coupled in a common orientation to a subset of the plurality of posts has a combined width, between respective centers of end posts of the subset of the plurality of posts, that is congruent based on the modulus.

A fence includes a plurality of posts, and fence panels having rails which extend across the plurality of posts, and are secured thereto. Jambs may be formed onto the fence system, and one or more gates may be hung to the jambs.

A wire crate latch apparatus having, in a first embodiment, a pivoting member that is continually drawn to a closed position by gravity and that is deflected into a catch when the door having the pivoting member is swung closed. The latch apparatus further includes upper and lower stops to contain a distal end of the pivoting member and to hold the distal end in the position to hit an oblique portion of the catch when the door is closed. In a second embodiment, a sliding latch apparatus is deflected by a catch and is relatively inaccessible from inside of the wire crate by back plates on the latch and catch.

A modular fence system includes a plurality of fence panels, each having top, bottom, left side, and right side edges. The left side edge may define a first profile, and he right side edge may define a second profile, the second profile being complementary to the first profile, whereby the left side edge of one panel may be disposed in side-by-side relationship to the right side edge of a second panel. The top, bottom, left side, and right side edges may define a periphery, with a plurality of barrier members residing within the periphery. Each panel may also include a strengthening feature integral with a plurality of the barrier members. A first hinge may carried on the left side edge, and a second hinge carried on the right side edge and configured to align with the first hinge.

A boat gate system for controlling vessel access to a port or similar waterbody has a number of connected, floating Port Security Barrier (PSB) segments. A remote latching and unlatching mechanism, combined with a powered mover mounted on one or more PSB segments, permits remote unlatching of the PSB segments; moving the PSB segments to a desired location (whether rotating same about a point, or moving a longer section laterally) so as to open the PSB, then moving the PSBs back to a closed position and latching same. Both the unlatching, movement, and latching are remotely controlled. Positional indicators, for example Global Positioning Systems or similar systems, are provided to monitor and assist in controlling PSB segment movement and unlatching, and movement of the PSB segments in a desired direction to a desired location.

A fence includes a plurality of posts, and fence panels having rails which extend across the plurality of posts, and are secured thereto. Jambs may be formed onto the fence system, and one or more gates may be hung to the jambs.

A wire gate operational system providing remote opening and closing of a post and wire gate having a winch and cable assembly with a power source and an operational controller. A remote-control actuator provides long range remote operation to open and close the gate by controlled dropping and raising of the lead wire gate post by the winch. A bottom wire loop between a brace post and the lead wire post acts as a pivot point for the lead gate posts and interconnected directional end cut composite intermediate posts (dancers) allow for controlled wire gate lowering direction allowing ranchers and livestock to pass directly over the lower gate.

A socket mounted post system including a post with a hollow base portion attached to a spring mechanism. The spring mechanism includes a pillar, the pillar having a finger extending from the hollow base portion. The finger is engageable with a socket that is mountable in a floor. The spring mechanism allows the post to flex angularly relative to a vertical orientation of the post.

An elevator car upper handrail apparatus, in which a connecting body is provided between respective ends of first and second side handrails on a landing side. The connecting body includes an opening/closing member which is rotatable between a closed position, in which a path for movement of a worker from a landing to a car upper surface is closed by the opening/closing member, and an open position, in which the path for movement is opened by the opening/closing member. The opening/closing member is configured to return automatically to the closed position. When the opening/closing member is in the closed position, the connecting body transmits an external force applied to one of the first and second side handrails in the width direction of a car to the other of the first and second side handrails.