Abstract: A marker for burying adjacent an underground structure such that a location of the underground structure can be identified from above a ground surface. The marker comprises a housing, a gimbal beacon retention device pivotally disposed within the housing, and a beacon device carried by the gimbal beacon retention device. The gimbal beacon retention device is structured and operable to orient the beacon device in a desired orientation relative to a ground surface regardless of the orientation of the housing relative to the ground surface.

Abstract: A marker for burying adjacent an underground structure such that a location of the underground structure can be identified from above a ground surface. The marker comprises a housing, a self-orienting beacon retention device disposed within the housing. The self-orienting beacon retention device comprises a coil bobbin, and an inductance-capacitance beacon device carried by the self-orienting beacon retention device. A coil of the LC beacon device is disposed around an exterior surface of the coil bobbin. The self-orienting beacon retention device is structured and operable to orient the coil bobbin and the inductor coil in a desired orientation relative to a ground surface regardless of the orientation of the housing relative to the ground surface.

Abstract: A marker for burying adjacent an underground structure such that a location of the underground structure can be identified from above a ground surface. The marker comprises a housing, a self-orienting beacon retention device disposed within the housing. The self-orienting beacon retention device comprises a coil bobbin, and an inductance-capacitance beacon device carried by the self-orienting beacon retention device. A coil of the LC beacon device is disposed around an exterior surface of the coil bobbin. The self-orienting beacon retention device is structured and operable to orient the coil bobbin and the inductor coil in a desired orientation relative to a ground surface regardless of the orientation of the housing relative to the ground surface.

Abstract: A marker for burying adjacent an underground structure such that a location of the underground structure can be identified from above a ground surface. The marker comprises a housing, a gimbal beacon retention device pivotally disposed within the housing, and a beacon device carried by the gimbal beacon retention device. The gimbal beacon retention device is structured and operable to orient the beacon device in a desired orientation relative to a ground surface regardless of the orientation of the housing relative to the ground surface.

Abstract: A ball tee for batting practice has a base assembly including a base, a post cup pivotally attached to the base, and at least one spring biasing the post cup into an upright position. A post assembly has a lower end inserted into the post cup. The spring causes the post assembly to return to the upright position after the post assembly is struck and deflected by a bat. The base assembly may include a base plate, a spring bracket attached to the base plate, and an axle extending through the spring bracket, through the spring, and through an axle hole in the post cup. The post assembly may have two or more tubes that allow the height of the post assembly to be telescopically adjusted.

Abstract: A folding quad-style chair has a folding frame including four legs each having a leg tube, and a fabric seating section attached to the frame. An extension is telescopically extendable from each leg tube. A locking device is provided with each extension for releasably locking each extension into a fixed position. The locking device may be designed as a plurality of spaced apart holes and with the locking device including a spring urging a locking pin into one of the holes. A foot plate may be pivotally attached to a lower end of each extension. Since the length of each leg can be individually adjusted, the chair may be configured to provide a level seating surface even on a hillside, incline, or other sloped or irregular surface. All four legs may be fully extended to provide an elevated seating surface.

Abstract: A ball tee for batting practice has a base assembly including a base, a post cup pivotally attached to the base, and at least one spring biasing the post cup into an upright position. A post assembly has a lower end inserted into the post cup. The spring causes the post assembly to return to the upright position after the post assembly is struck and deflected by a bat. The base assembly may include a base plate, a spring bracket attached to the base plate, and an axle extending through the spring bracket, through the spring, and through an axle hole in the post cup. The post assembly may have two or more tubes that allow the height of the post assembly to be telescopically adjusted.