Abstract: An information handling system includes a memory and a processor. The memory stores a current basic input/output system (BIOS) firmware image. During a regular boot mode of the information handling, the processor creates a first set of tables associated with the current BIOS firmware image, stores the first tables to the memory, and receives a BIOS firmware update image. During a BIOS update boot mode of the information handling system, the processor creates a second plurality of tables associated with the BIOS firmware update image, and compares the first and second tables. In response to a difference being determined between the first and second tables, the processor aborts the BIOS update boot mode and generate an error log.

Abstract: A mechanical flowmeter is provided for measuring the flow of hydraulic fluid in a system in which the flowmeter is connected. The flowmeter contains a spring biased piston which is responsive to the rate of flow through an annular space surrounding the piston as it moves in a tapered bore. A toroidal armature of ferrous (magnetic) material is mounted on a rod extending from the piston for movement therewith. Movement of the armature and the piston rod within a hollow guide is tracked by a permanent magnet of toroidal shape which is mounted surrounding the guide in sliding relationship. A sight glass surrounding the guide and magnet is calibrated with a scale for converting the position of the magnet to an indication of flow rate. For fluid flow in the reverse direction, the piston is moved out of the tapered bore, thus permitting free flow in the reverse direction with minimal energy loss.

Abstract: A seal structure for use in high pressure pneumatic or hydraulic fluid actuators. A solid toroidal shaped elastomeric O-ring and a solid toroidal shaped backup ring are emplaced in a specially configured circumferential groove on an internal sleeve. A conical shaped ramp in the groove bottom permits the use of a solid backup ring with a larger internal diameter for ease of installation over intervening lands on the sleeve without distortion of the backup ring beyond its elastic limit. The difference in the sizes of the symmetrical O-ring and backup rings assist in their proper installation on the sleeve.

Abstract: A zero leakage valve, employing a radially squeezed elastomeric o-ring seal. In opening and closing, the o-ring is transferred from the valve element to a following retainer sleeve. The transfer is facilitated by relieving the squeeze on the o-ring coincidental with valve movement from closed to open positions. One embodiment is a dual element check valve employing the radial seal in conjunction with a conventional poppet and seat combination. The two valve elements act in a series arrangement.

Abstract: A fitting for establishing a sealed connection with a boss which fitting includes a concentric depression about the innermost portion of its boss engaging surface, which retains a backup ring of special cross-section by means of an inwardly facing circumferential surface therein, the ring, being constructed from material which creeps when subjected to force over an extended length of time, combining with the depression to control the deformation of an adjacent O-ring so that any gapping adjacent the O-ring is of insufficient size to allow extrusion thereof and seal failure.