Abstract: The devolatilization of plastomer pellets is undertaken using nitrogen that is recycled in the process. Volatile hydrocarbons are removed from the nitrogen in a hydrocarbon extraction vessel (e.g. an adsorbent bed). In an embodiment, the recycled nitrogen contains less than 300 ppm of volatile hydrocarbons after being treated in the adsorbent bed.

Abstract: A rotary high lifter and controlled descender has a main housing enclosing a ratchet spool, controlled descender, and locking pawl. An adjustable crank turns the ratchet spool and takes up rope which raises an attached feeder, nestbox, etc. The locking pawl assures that as the rope is wound, the lifter/descender automatically locks in place so that an inadvertent crank release of the crank does not cause the feeder to fall. The rope exits the main housing via an inlet nipple which protects the housing from the elements, insects, etc. To lower the feeder, actuate a cam lock to release the locking pawl, and turn the crank in the opposite direction. Releasing the cam lock can actuate a controlled descender portion of the invention. These components apply a brake-pad-like action against the ratchet spool (can also use a tension knob) to control the speed of rotation and descent.

Abstract: A high lift feeder protector has mounting, vertical extension, and horizontal extension members, which can be hollow to allow a suspension rope to run therethrough. The members together can resemble an extended cane. The far end of the suspension rope attaches to a feeder. The rope runs up from the feeder, into an output port on the underside of the horizontal extension member, through the horizontal extension member, through the vertical extension member, through the mounting member, and then extends out an input port at the near end thereof. The tag end of the suspension rope can then be affixed to a cleat, winch or other securing device. A rope stop can be affixed near the tag end and should be large enough that it cannot fit within the input port. Thus, the rope stop functions to stop the rope from feeding completely in and through the members.

Abstract: A rotary high lifter and controlled descender has a main housing enclosing a ratchet spool, controlled descender, and locking pawl. An adjustable crank turns the ratchet spool and takes up rope which raises an attached feeder, nestbox, etc. The locking pawl assures that as the rope is wound, the lifter/descender automatically locks in place so that an inadvertent crank release of the crank does not cause the feeder to fall. The rope exits the main housing via an inlet nipple which protects the housing from the elements, insects, etc. To lower the feeder, actuate a cam lock to release the locking pawl, and turn the crank in the opposite direction. Releasing the cam lock can actuate a controlled descender portion of the invention. These components apply a brake-pad-like action against the ratchet spool (can also use a tension knob) to control the speed of rotation and descent.

Abstract: A vertical fore grip for a firearm with an integrated pressure switch pocket. The vertical fore grip includes a body with internal storage cavity, a mount adapted to secure a firearm, a pocket for a pressure switch on the perimeter of the body, and a cap to secure a pressure switch and waterproof the internal storage cavity. The mount has a groove for a firearm rail, at least one locking bar, and a spring for engaging the locking bar to a firearm rail.

Abstract: A grip for attachment to a firearm is provided. The firearm grip includes a housing having an internal storage cavity and a pull tab fixedly attached to the housing. The pull tab includes a body and a stopper attached to the body, which removably engages a wall that defines an open end of the internal storage cavity to removably cover the internal storage cavity.