Abstract: A barrier post for a personnel barrier system, includes a column (6) that, in use, is arranged substantially vertically, a support base (4) at the lower end of the column and a divider assembly (8) towards the upper end of the column. The column (6) is at least partially hollow and has an internal chamber (22) defined by a circumferential wall, said wall being at least partially transparent.

Abstract: A vertebral model for illustrating the alignment and misalignment of the spine is disclosed. The model consists of first and second members movably mounted to each other, the first and second members each having a longitudinal axis. The model also has a third member interposed between the first and second members. The first and second members are movable relative to each other between a first position, wherein the first and second members are coaxially aligned, and a second position wherein the first and second members are not coaxially aligned. The model also has a locking mechanism for releasably locking the first and second members in their second position. The first and second members are configured to resemble two adjoining vertebrae, and the third member is configured to resemble an inter-vertebral disc between two adjoining vertebrae. The invention permits the model to illustrate how the vertebra can be placed into and out of alignment.

Abstract: A connector device 40 for use with a personnel barrier system includes a first connecting structure 50 suitable for engaging a T-shaped fixing point and a second connecting structure 52 suitable for engaging a V-shaped slot. The first connecting structure 50 includes a pair of opposed, inwardly-extending wall elements 54 defining between them a T-shaped slot 56. The second connecting structure 52 includes a pair of outwardly-extending wall elements 58 for engaging the V-shaped slot.

Abstract: A campfire skewer consisting of an elongate member having a first end, a second end, a first portion adjacent the first end, and a second portion adjacent the second end. The first portion has a first axis and the second portion is offset from the first axis. The first and has means for impaling food. A hand grip is rotatably mounted on the first portion of the elongate member. By holding the hand grip and manipulating the second portion of the elongate member the elongate member can be made to rotate in a rotisserie-like fashion.

Abstract: A campfire skewer consisting of an elongate member having a first end, a second end, a first portion adjacent the first end, and a second portion adjacent the second end. The first portion has a first axis and the second portion is offset from the first axis. The first and has means for impaling food. A hand grip is rotatably mounted on the first portion of the elongate member. By holding the hand grip and manipulating the second portion of the elongate member the elongate member can be made to rotate in a rotisserie-like fashion.

Abstract: An improved circuit for controlling the output power level of a radio frequency (RF) amplifier is disclosed. The circuit samples the output of an RF amplifier. The sample is amplitude modulated at a preselected modulation frequency and is passed to a detector. In repsonse to the amplitude modulated signal, the detector produces a signal whose amplitude is indicative of the RF amplifier's output power and whose frequency is the modulation frequency. The amplitude of the signal produced by the detector is then compared to a reference amplitude and the difference (error signal) is used to control the gain of the RF amplifier.

Abstract: An improved circuit for controlling the output power level of a radio frequency (RF) amplifier is disclosed. The circuit samples the output of an RF amplifier. The sample is amplitude modulated at a preselected modulation frequency and is passed to a detector. In response to the amplitude modulated signal, the detector produces a signal whose amplitude is indicative of the RF amplifier's output power and whose frequency is the modulation frequency. The amplitude of the signal produced by the detector is then compared to a reference amplitude and the difference (error signal) is used to control the gain of the RF amplifier.

Abstract: A split-E mechanism is provided for use on a flute having a right-hand steel, a left-hand steel, a first hinge rotatably mounted on the right-hand steel, a first key coupled to the first hinge, a second hinge rotatably mounted on the left-hand steel, and a second key. The split-E mechanism includes an actuator for actuating the second key in response to rotation of the second hand relative to the left-hand steel. The mechanism also includes a bridge device for interconnecting the first and second hinges for rotating the second hinge in response to actuation of the first key to operate the actuator.

Abstract: A vertically elongated, hollow and lightweight housing including top and bottom walls and a plurality of interconnected sidewall portions extending between and connecting the top and bottom walls is provided. At least one of the sidewall portions has indicia thereon indicating a winning bingo game situation and the bottom wall includes a central opening formed therein about which a depending tubular neck integral with the bottom wall is disposed. An elongated wand is also provided including upper and lower ends and a mid-length portion extending between and connecting the upper and lower ends. The wand is slidingly telescopingly received through the neck and the upper and lower ends are slightly diametrically enlarged in relation to the mid-length portion of the wand. The upper and lower ends are tightly slidingly receivable through the neck and the mid-length portion of the wand is freely slidable through the neck.