Abstract: The invention provides a rotary or touch-sensitive control comprising a first rotatable and/or touch-sensitive body comprising means for displaying information relating to a parameter controlled by the first body, and a second rotatable and/or touch-sensitive body formed around the first rotatable body comprising means for displaying information relating to a parameter controlled by the second rotatable body.

Abstract: The invention provides a rotary or touch-sensitive control comprising a first rotatable and/or touch-sensitive body comprising means for displaying information relating to a parameter controlled by the first body, and a second rotatable and/or touch-sensitive body formed around the first rotatable body comprising means for displaying information relating to a parameter controlled by the second rotatable body.

Abstract: A coin sensing unit having a rotary sweeping arm is used to determine characteristics of the coins so that the coins can be deposited in a correct one of the hoppers.

Abstract: Disclosed is an improved stuffing box that is adapted to articulate within a housing body to accommodate a polished rod misalignment, maintain compression of a graphite stuffing material, prevent cross contamination of debris through the stuffing box interior and provide a means to monitor for fluid leaks. The device comprises a housing having an internally supported stuffing box, where the stuffing box is supported along an angular seat within the housing that allows reorientation of the box as the polished rod passes therethrough. A bonnet applies continuous load onto a gland pusher element using spring washers to compress the stuffing material through discontinuous heat cycles, while an upper and lower wiper element clean the polished rod before entering the stuffing box interior. A lantern ring within the stuffing box provides a venting aperture into the interior of the housing, whereby a pressure indicator monitors for fluid leaks during operation.

Abstract: A coin apparatus in which coin conveyors convey coins along substantially vertical and horizontal planes to coin hoppers. A coin sensing unit having a rotary sweeping arm is used to determine characteristics of the coins so that the coins can be deposited in a correct one of the hoppers.