Abstract: A control panel cover assembly for use in an ultra-compact, jack-in-the-box, rear-projection television receiver. The receiver is housed in an open-topped cabinet having lid means pivotally attached at the back thereof for selectively opening and closing the cabinet providing for emergence and storage of an elevatable unitary optical assembly including a rear-projection screen. The unitary optical assembly includes rigid, box-like shroud means. The receiver has a widthwise-oriented control panel means located inwardly adjacent to the top section of the front panel of the receiver. The control panel cover assembly according to the invention comprises an outwardly swinging cover member which is attached to the lid at the front thereof by at least one inwardly-spring-biased hinge. The front panel of the receiver has a recess adjacent to the control panel for receiving the cover member.

Abstract: A main body member having a head member bolted to one end defines the primary cylinder end portion of a single-ended hydraulic cylinder. A piston rod bearing insert is pressed into the main body bore which defines a cylinder bore. A piston is bolted to a piston rod which extends upwardly through the bearing insert. The piston rod bearing, piston and rod define the primary rod end portion of the single-ended hydraulic cylinder. The above mentioned components define the entire primary structure of a single-ended hydraulic cylinder system and as such provides the entire primary load bearing circuit of a hydraulic cylinder system. A housing member fits about a part of the main body member and the two define a hydraulic fluid reservoir. The piston return spring is an external spring surrounding the piston rod.