Abstract: Described herein are embodiments of systems, apparatuses, and methods that include a center rod plunger, wherein movement and/or placement of the center rod is at least partially controlled by the center rod including a centering section that keeps the center rod more centered in the center rod plunger's housing. The center rod plunger may also include a clutch for retarding movement of the center rod in the housing. In still other embodiments, the center rod may have a shaft whose diameter may vary and a clutch that may include a one-piece device.

Abstract: Described herein are embodiments of systems, apparatuses, and methods that include a center rod plunger, wherein movement of the center rod between an open and a closed position is at least partially controlled by a clutch. The center rod has a shaft whose diameter may vary such that the clutch imparts a corresponding varying degree of friction on the center rod and such that less friction is imparted when the center rod is in its open and/or closed position.

Abstract: A system for a modular door for a building structure includes a door skeleton, an electrical interface, and a communication interface. The door skeleton includes one or more removable modular structures. At least one of the modular structures includes one or more electronic components and at least one of the electronic components is configured to receive and transmit electrical signals and data via the electrical interface and the communication interface, respectively.

Abstract: An injection pen apparatus (30) for medicament injection including a medicament cartridge assembly (31) formed to receive and contain a medicament therein. A holding sleeve (34) is provided which is dimensioned to receive the medicament cartridge assembly (31) therein which mates with a solution transfer device (35) including an axially movable displacement rod (36). The injection pen apparatus (30) further includes a coupling mechanism (37) removably coupling the solution transfer device (35) to both a plunger (32) slidably movable in the cartridge (33) and to the holding sleeve (34). A sleeve mounting assembly (40) of the coupling mechanism (37) removably mounts the coupling mechanism to the holding sleeve (34).

Abstract: An apparatus for controlling the light intensity output from an arc lamp for use with an arc lamp-illuminated projector includes a light valve to control the projector output light intensity by the selective positioning of the light valve in all or a portion of the light path between the arc lamp and the projector output. The light valve is operatively coupled to the output of a magnetically coupled clutch, the input of the clutch being continuously driven by a motor. A programmer applies a voltage proportional to the desired light intensity to the clutch for controlling the degree of magnetic coupling, and therefore the position of the light valve. The variable torque applied through the clutch to the light valve may be countered by a variable counter-torque produced as by a spring to establish the desired continuous range of equilibrium positions of the light valve.