Abstract: An interconnection system for portable networking modules including a pair of male connectors on one side and a female connector and an alignment slot on an opposing side. Two or more modules can be connected in a daisy chain series by aligning a male and female connector, rotating the modules around the connectors' central axis, mating the opposing connectors, and twisting the modules into alignment. When connected, one male connector is engaged with the female connector, and the other male connector fits into the alignment slot. Twisting in the opposite direction disconnects the modules. The connectors transmit data and power between connected modules. The male connectors also receive power modules such as military radio battery packs.

Abstract: A rotatable tubing anchor for anchoring a tubing string to a casing in a well, wherein a lock pin extending radially inward from a cylindrical drag body interacts with a lazy T portion of a lock slot in a peripheral surface of a mandrel positioned in the cylindrical drag body limits vertical and rotational movement of the mandrel in relation to the cylindrical drag body in a manner that enables retaining, controlling, setting, and releasing anchor slips on the rotatable tubing anchor for lowering a tubing string equipped with the rotatable tubing anchor and a down hole pump into a well, anchoring the tubing string to casing in the well against upward tension on the tubing string while allowing rotation of the tubing string, and releasing the rotatable tubing anchor from the casing to enable pulling the tubing string, rotatable tubing anchor, and pump out of the well.

Abstract: A rotatable tubing anchor for anchoring a tubing string to a casing in a well, wherein a lock pin extending radially inward from a cylindrical drag body interacts with a lazy T portion of a lock slot in a peripheral surface of a mandrel positioned in the cylindrical drag body limits vertical and rotational movement of the mandrel in relation to the cylindrical drag body in a manner that enables retaining, controlling, setting, and releasing anchor slips on the rotatable tubing anchor for lowering a tubing string equipped with the rotatable tubing anchor and a down hole pump into a well, anchoring the tubing string to casing in the well against upward tension on the tubing string while allowing rotation of the tubing string, and releasing the rotatable tubing anchor from the casing to enable pulling the tubing string, rotatable tubing anchor, and pump out of the well.

Abstract: Disclosed are embodiments of golf swing guide apparatus and related methods and systems. Various embodiments disclosed herein may be used as a training tool to teach a desired swing motion to a golfer. In one embodiment, the device may comprise a guide bar positioned at some height above the ground. The guide bar may be configured to guide a golfer's backswing such that the swing begins in a desired swing plane. In some embodiments, the device may be configured to automatically retract the guide bar during, or after, the golfer's backswing such that it does not interfere with the forward movement of the golf swing.

Abstract: Disclosed are embodiments of golf swing guide apparatus and related methods and systems. Various embodiments disclosed herein may be used as a training tool to teach a desired swing motion to a golfer. In one embodiment, the device may comprise a guide bar positioned at some height above the ground. The guide bar may be configured to guide a golfer's backswing such that the swing begins in a desired swing plane. In some embodiments, the device may be configured to automatically retract the guide bar during, or after, the golfer's backswing such that it does not interfere with the forward movement of the golf swing.