Abstract: An improved baffle assembly for heat exchanger tubes comprising a shaft and at least one opposing pair of expanding baffles positioned coaxially on the shaft, each expanding baffle comprising a central hub portion and a plurality of extension portions each radiating outward from the hub portion at complementary oblique angles so that the central hub portions of each baffle are spaced apart along the shaft and the distal ends of the extension portions of each baffle are brought into physical contact.

Abstract: An improved baffle assembly for heat exchanger tubes comprising a shaft and at least one opposing pair of expanding baffles positioned coaxially on the shaft, each expanding baffle comprising a central hub portion and a plurality of extension portions each radiating outward from the hub portion at complementary oblique angles so that the central hub portions of each baffle are spaced apart along the shaft and the distal ends of the extension portions of each baffle are brought into physical contact.

Abstract: An improved baffle assembly for heat exchanger tubes comprising a shaft and at least one opposing pair of expanding baffles positioned coaxially on the shaft, each expanding baffle comprising a central hub portion and a plurality of extension portions each radiating outward from the hub portion at complementary oblique angles so that the central hub portions of each baffle are spaced apart along the shaft and the distal ends of the extension portions of each baffle are brought into physical contact.

Abstract: A packboard assembly (10) has a shell (12) in which the escape slide is packed and held in place by releasably fastened covers (28,29). The shell (12) is mounted on a door (44) and supported by latches (52) having latch pins (62) which when removed cause the assembly (10) to drop. The latch pins (62) are removed in response to opening of the door (44) after the escape slide system is actuated by an operator. Then after the packboard assembly (10) is dropped a predetermined distance a packing release lanyard (68) is tensioned to release the covers (28,29) and permit the shell (12) to fall away from the slide. A firing lanyard (78) then actuates the inflation of the slide.

Abstract: A supported ring (11) is locked in the load retaining eye (12) of a hook by a locking jaw (14) carried by a rotatable cam (44) which holds the locking jaw (14) in the locking position by engagement with a releasable latch (50). The locking position is maintained by a coil spring (64) connecting the latch (50) and cam (44). A lanyard (70) is connected to the releasable latch (50) for disengaging the locking edge (56) of the latch (50) from the cam (44) to arm the hook assembly (10). The spring (64) also urges a cam ejecting surface (48) against the load carrying ring (11) and maintains pressure on the ring (11) after arming so that when the load is released the ring (11) will be ejected from the eye (12). The lanyard (70) extends from the releasable latch (50) to the cam (44) where it is engageable with the cam (44) for manual rotation of the cam (44) to eject the ring (11) in the event of spring (64) failure.

Abstract: The characteristic impedance of a planar microstrip or stripline for transmitting signals along a transmission line in the TEM mode is matched by way of a tapered shunt which terminates the line in a dc short circuit to ground. The tapered shunt or termination wraps around the edge of the insulating substrate and electrically connects the microstrip to the ground plane. The geometry of the tapered shunt is incrementally adjusted by means of a series of steps to produce a termination having a selected impedance.

Abstract: A method and apparatus are disclosed for providing co-planar connections to the terminal leads of a switching device from circuit elements located on opposite sides of a planar microstrip substrate. A through hole is provided in the substrate where the switching device is to be mounted. A conductive terminal is inserted through the hole. The terminal includes a portion contacting the circuit element on one side of the substrate and a portion extending through the hole to become substantially co-planar with the circuit elements on the opposite side of the substrate. A switching device is positioned in the hole to permit its leads to be connected to the extended portion of the terminal and to the microstrip circuit elements on the opposite side of the substrate.