Abstract: According to various aspects, exemplary embodiments are provided of antenna assemblies. In an exemplary embodiment, an antenna assembly generally includes at least one antenna element configured to be operable for receiving high definition television signals.

Abstract: A foldable tiltable wheelchair that overcomes the foregoing deficiencies comprises a base frame comprising laterally spaced side frames. A tiltable seat frame is supported for pivotal movement in relation to the base frame. The tiltable seat frame comprises laterally spaced seat rails. A first foldable cross-member provides a rigid connection between the seat rails when in an unfolded position. According to one embodiment, a second foldable cross-member provides a rigid connection between the side frames when in an unfolded position. The first and second foldable cross-members coupled so that moving one cross-member moves the other cross-member. According to another embodiment, the tiltable seat frame comprises a seat back supported in relation to the seat frame. The seat back comprises laterally spaced back canes. The first foldable cross-member is coupled to the seat frame so that the back canes are supported in relation to the first foldable cross-member so as to limit lateral flexure of the back canes.

Abstract: According to various aspects, exemplary embodiments are provided of antenna assemblies. In an exemplary embodiment, an antenna assembly generally includes at least one antenna element configured to be operable for receiving high definition television signals.

Abstract: According to various aspects, exemplary embodiments are provided of antenna assemblies. In an exemplary embodiment, an antenna assembly generally includes at least one antenna element configured to be operable for receiving high definition television signals.

Abstract: According to various aspects, exemplary embodiments are provided of antenna assemblies. In an exemplary embodiment, an antenna assembly generally includes at least one antenna element configured to be operable for receiving high definition television signals.

Abstract: According to various aspects, exemplary embodiments are provided of antenna assemblies. In an exemplary embodiment, an antenna assembly generally includes at least one antenna element configured to be operable for receiving high definition television signals.

Abstract: According to various aspects, exemplary embodiments are provided of antenna assemblies. In an exemplary embodiment, an antenna assembly generally includes at least one antenna element configured to be operable for receiving high definition television signals. The antenna assembly may also include at least one reflector spaced-apart from the antenna element that is configured to be operable for reflecting electromagnetic waves generally towards the antenna element.

Abstract: A foldable wheelchair comprises a plurality of width-adjustable hinged foldable cross-members connected to side frames to support a pivotable tiltable seat frame. The seat frame angle is operably controlled by use of gas springs that can be configured to support users of varying weight. The wheelchair is further configured to control lateral stability of the seat frame. The seat frame cooperates with a forward positioned pivot that maintains the user's knees in a position relative to the ground. Wheel adjustments allow for a range of seat height.

Abstract: According to various aspects, exemplary embodiments are provided of antenna assemblies. In an exemplary embodiment, an antenna assembly generally includes at least one antenna element configured to be operable for receiving high definition television signals. The antenna assembly may also include at least one reflector spaced-apart from the antenna element that is configured to be operable for reflecting electromagnetic waves generally towards the antenna element.

Abstract: Exemplary embodiments are disclosed of HDTV antenna assemblies. In an exemplary embodiment, a high definition television antenna assembly generally includes a first antenna element and a second antenna element. The first antenna element has a generally annular shape with an opening. The second antenna element includes first and second arms spaced apart from the first antenna element. The first and second arms extend at least partially along portions of the first antenna element. The first and second antenna elements may be electromagnetically coupled without a direct ohmic connection between the first and second antenna elements.