Abstract: A fixed rail mounted railroad switch point indicator is provided, wherein proximity detectors are mounted to the fixed stock rail to sense the position of the switch relative to those stock rails. Preferably, eddy current sensors are used as the proximity sensors to indicate the distance of the switch points relative to the fixed rails. A microprocessor converts a current reading from the proximity detectors into the distance measurement, such as by indicating an "on/off" state of the sensor. Additionally, the microprocessor provides information as to the operation of the sensors to provide the reliability of the signals received.

Abstract: A container has a wall member; a front panel; and a rear panel generally parallel to and spaced apart from the front panel. The front and rear panels are connected about their peripheries to the wall member which extends between the front and rear panels to define a volume. The rear panel, the front panel and the wall member is a unitary, blow molded member including a generally rigid shell, and a plurality of flexible membranes each of which has a periphery and a surface. The periphery of the flexible membranes is bonded to the generally rigid shell. The surfaces of the flexible membranes are separated from the generally rigid shell to form a plurality of unbonded areas between the surfaces of the flexible membranes and the generally rigid shell. Air is contained within the unbonded areas, thereby forming a plurality of air pockets between the flexible membranes and the generally rigid shell.

Abstract: A railroad switch machine gear box having a low vertical profile is provided, wherein a compound gear rotatably mounted within a housing along a first vertical axis cooperatively engages an adjacent main crank gear. The main crank gear is rotatably mounted within the housing about a main crank shaft that extends vertically within the gear box housing along a second vertical axis that is different than the first vertical axis. A bevel gear fixedly mounted to a hand throw shaft rotatably mounted within the housing along a first horizontal axis cooperatively engages the compound gear, thereby to rotate the compound gear when the hand throw shaft is rotated, typically with a hand throw lever affixed to the hand throw shaft external to the housing. The hand throw shaft may be rotatable about an eccentric shaft that is independently mounted and rotatable with the housing along the first horizontal axis.

Abstract: A motion detector for detecting movement of a rail based vehicle and the direction of that movement is provided. The motion detector can be integral with or attachable to an end-of-train unit and can include a single axis accelerometer mounted at an angle from the rails for detecting acceleration in both the lateral and vertical directions. A systems controller, which can include an analyzer, can be provided to receive and analyze output from the accelerometer to determine a motion state and a direction. A power controller can be provided for supplying power to the accelerometer on an intermittent basis to conserve power. A calibration unit can be provided to both initially calibrate and to subsequently recalibrate the accelerometer after a stopped motion state is detected. Additionally, an input/output port and an output driver for conditioning the signal for output to the end-of-train unit can be provided.

Abstract: An upright suitcase includes a front section and an opposing rear section, each having an outer panel and a circumferential wall with a bottom edge and a plurality of free edges. The bottom edges are hingedly connected for movement of the opposing front and rear sections between an open position, in which access to the opposing sections is provided, and a closed position, in which all of the edges of the two circumferential walls are in juxtaposition. A zipper closure engages the opposing sections and selectively holds the free edges of the circumferential walls in juxtaposition. A divider panel is positioned within the upright suitcase to at least partially divide the opposing sections from each other when in the closed position. The divider panel has one end flexibly tethered to the rear circumferential wall and is movable into and out of the rear section.

Abstract: An antenna is disclosed that has windings that are contrawound in segments on a toroid form and that have opposed currents on selected segments. An antenna is disclosed that has one or more insulated conductor circuits with windings that are contrawound around and over a multiply connected surface, such as a toroidal surface. The insulated conductor circuits may form one or more endless conductive paths around and over the multiply connected surface. The windings may have a helical pattern, poloidal peripheral pattern or may be constructed from a slotted conductor on the toroid. Poloidal loop winds are disclosed with a toroid hub on a toroid that has two plates that provides a capacitive feed to the loops, which are selectively connected to one of the plates. Associated methods are also disclosed.

Abstract: A suitcase has first rollers mounted thereon to at least partially support the suitcase when in an upright position and to enable rolling movement of the suitcase across a surface. The first end of an arm is pivotally mounted to a rigid body portion of the suitcase. Second rollers are mounted about adjacent to the second end of the arm to enable rolling movement of the suitcase across the surface. A first link is pivotally mounted to the rigid body portion, and a second link is pivotally mounted to the first link and the arm. The arm is alternately retractable to a retracted position about adjacent to a rear panel of the suitcase, and deployable to a deployed position spaced outwardly from the rear panel. The first and second rollers cooperate to fully support the suitcase when the second rollers are deployed and the suitcase is in a rolling position. A push/pull handle is mounted on the suitcase to enable a user to roll the suitcase across the surface.

Abstract: An apparatus for use in compacting or densifying soils includes a tubular casing having a vertical longitudinal axis and an inside surface; a hollow tubular drive shaft aligned with the vertical longitudinal axis of the tubular casing and mounted for rotation therein; a drive motor for rotating the drive shaft; a carrier attached to the drive shaft for rotation therewith; and a cylindrical roller weight in rolling contact with the inside surface of the tubular casing. The carrier engages the roller weight for rotation about the vertical longitudinal axis of the tubular casing. The centrifugal force resulting from rotation of the roller weight is resisted by the tubular casing thereby causing vibration thereof.

Abstract: An antenna is disclosed that has windings that are contrawound in segments on a toroid form and that have opposed currents on selected segments. An antenna is disclosed that has one or more insulated conductor circuits with windings that are contrawound around and over a surface, such as a spherical surface, a generally spherical surface, a multiply connected surface, a toroidal surface, or a hemispherical surface. The insulated conductor circuits may form one or more endless conductive paths around and over the surface. The windings may have a helical pattern, a generally helical pattern, a partially helical pattern, a poloidal peripheral pattern or may be constructed from a slotted conductor on the toroid. Poloidal loop winds are disclosed with a toroid hub on a toroid that has two plates that provides a capacitive feed to the loops, which are selectively connected to one of the plates.

Abstract: A suitcase has a retractable pull handle. The suitcase includes parallel front and back panels and a wall member which combine to define an enclosed volume. A rigid pull handle is mounted in juxtaposition to the top portion of the wall member. Rollers are mounted on the bottom portion of the wall member opposite the pull handle. The pull handle is extendable to pulling position extending generally parallel to the front and back panels. In the extended position, the pull handle is operable to enable a user to roll the suitcase across a surface on the rollers with the weight of the suitcase being distributed between the rollers and the pull handle. The pull handle is retractable into the inside of the suitcase when not in use. In the retracted position, the gripping member of the pull handle is received into a handle receptacle recessed into the top portion of the wall member. A closure secures the pull handle inside the handle receptacle to prevent accidental extension of the pull handle.