Abstract: A safety plate assembly for use with a conventional electric outlet of the type adapted to be fitted in a panel opening and including an outlet box and an outlet mounted in the box and including a receptacle defining a pair of sockets receiving the prongs of an electric plug. The assembly includes an annular mounting plate of open frame configuration positioned against the panel in surrounding relation to the opening and a cover plate positioned over the mounting plate and lockingly secured thereto by resilient tabs on the mounting plate snappingly coacting with protrusions on the cover plate.
Abstract: A light weight battery powered x-ray source capable of producing high intensity x-ray emissions with low power consumption. A modular construction locates all high voltage components including the x-ray tube, spark gap trigger, spiral capacitor and the secondary of a step-up transformer in a sealed canister which can be decoupled both mechanically and electrically by unscrewing a simple threaded coupling. A center module contains the primary of the step-up transformer, circuit boards for electronic components and a pulse counter/selector. A battery pack with rechargeable Nicad batteries is removably connectable to the center module. High intensity pulses are achieved in part by connecting the spiral capacitor at midlength to the spark gap trigger. An improved x-ray tube with light weight but effective lead shielding and an overall length of less than two inches is also disclosed.
Abstract: A master secondary clock system of the analog impulse type consisting of separate motor driven secondary clocks and a master control unit. The secondary clocks can be set at any time by an appropriate signal from the master clock so that even widely scattered secondary clocks can be brought at any time to the correct time. In one disclosed embodiment, the secondary clocks are moved by a series of rapid pulses form the master clock to a predetermined known time, the secondary clocks are brought into registry, the master clock calculates the time disparity between the registration time and the real time, and the secondary clocks are moved in unison to the real time.
July 13, 1994
Date of Patent:
August 15, 1995
National Time & Signal Corporation
Michael P. Burke, Stephen A. Bogdan, Bruce D. Emaus
Abstract: A hinged, shell-like protective cover is releasably mounted to a flanged, split-ring battery cable terminal. A method of assembling said cover to said battery cable terminal is also described. The cover surrounds the battery cable terminal, providing protection from dirt, water, salt, and other contaminants in the engine compartment of a vehicle. The cover includes a base having an aperture which is adapted to receive a battery post. The base is attached to a lid by an integrally molded hinge which allows the lid to pivot about the base between an open position and a closed position. A locking mechanism is provided to secure the lid to the base in the closed position. A pair of resilient locking arms are formed on the base and are adapted to receive a terminal bolt. A plurality of resilient tabs are formed on the base of the cover and located near the aperture in the base. The resilient tabs interact with a flange on the terminal to secure the terminal to the base.
Abstract: An automatic clutch controller for a vehicle that reduces the oscillatory response to clutch engagement. The automatic clutch controller receives inputs from an engine speed sensor and a transmission input speed sensor and develops a clutch actuation signal controlling a clutch actuator from disengaged to fully engaged. The clutch engagement signal at least partially engages the friction clutch in a manner to cause the measured transmission input speed to asymptotically approach engine speed employing an approximate inverse model of this oscillatory response. The automatic clutch controller preferably includes a PID function and a differential engine speed function, which together adaptively adjust clutch engagement corresponding to vehicle loading.
Abstract: A stamped link and a method of forming the link. The link is a clevis link formed of a single piece of sheet metal and includes a generally planar main body portion, a curl portion proximate the rearward end of the link forming a first bearing surface defining a rearward pivot axis, longitudinal edge flange portions upstanding from the main body portion, side wall portions upstanding from the main body portion proximate the forward end of the link inboard of each edge flange portion and each having an upper edge generally at the level of the upper edge of the associated edge flange, a central ridge upstanding from the main body portion between the ends of the link and blending at its forward end in the side walls, and aligned apertures in each edge flange and its associated side wall proximate the forward end of the link forming a second bearing surface defining a forward pivot axis.
Abstract: A gravity actuated switch and an automotive under hood or under deck lid light assembly utilizing the switch. The switch includes a blade and a ball mounted for rolling movement along the blade in response to a change in attitude of the switch. The ball is operative in response to such rolling movement to move the blade between a first configuration in which the switch is open and a second configuration in which the switch is closed. The blade comprises a beam member formed of a spring material arranged in cantilever fashion. The spring material of the beam is electrically conductive and the beam forms a part of the electrical circuit path through the switch.
Abstract: A rotary internal combustion engine including a housing and two vanes mounted on concentric shafts for independent rotation in one direction within the housing in response to combustion within the housing. The engine further includes a ratchet assembly, including a ratchet housing associated with the concentric shafts to prevent rotation of the vanes within the housing in the opposite direction, and a converter assembly operative to convert the movement of the vanes into unidirectional rotation of an output shaft. In order to ensure steady state operation and provide control over the combustion ratio of the engine, a timing mechanism is provided to sense the relative position of the vanes at any given point in the engine cycle and rotate the vanes relative to the housing independently of the combustion induced rotation of the vanes within the housing.
Abstract: A stabilizer kit for installation in a pickup truck to secure loads within the cargo area of the truck. The kit includes a pair of elongated side rails for securement to the side walls of the pickup; a plurality of crossbars extending transversely of the truck at longitudinally spaced locations within the cargo area and each mounted at its opposite ends for sliding longitudinal adjusting movement on the respective side rails; and an accessory bar extending downwardly from one of the crossbars and mounted at its upper end for sliding transverse adjusting movement on the crossbar. A pin assembly is provided for locking each crossbar in selected positions of longitudinal adjustment on the side rails and for locking the accessory bar in selected positions of transverse adjustment on the crossbar.
Abstract: An adjustable base assembly for selectively adjusting the horizontal and vertical position of a fabricating tool such as a punch or metal forming tool. The apparatus includes a generally planar base and a carriage assembly positioned on the base. The carriage assembly includes a lower wedge plate assembly having an upper surface defining a pair of upwardly converging wedge faces, an upper wedge plate assembly having a lower surface defining a pair of downwardly converging wedge faces, a pair of wedge blocks each having converging upper and lower wedge faces for respective sliding engagement with one of the upwardly converging wedge faces and one of the downwardly covering wedge faces, and a vertical adjustment screw mounted on the lower wedge plate, passing through the wedge blocks, and including left and right threaded portions for respective threaded coaction with a left threaded bore in one of the wedge blocks and a right threaded bore in the other wedge block.
Abstract: A seal assembly for use in precluding leakage of hot combustion products along the shaft of a rotating heat exchanger wheel utilized in a power plant. The seal assembly includes a housing positioned in surrounding relation to the shaft and defining an annular chamber around the shaft having an inboard end and an outboard end; a positive annular fluid seal with the shaft proximate the outboard end of the chamber; and a leakage annular fluid seal with the shaft proximate the inboard end of the chamber. The positive annular fluid seal comprises a packing ring surrounding the shaft and an annular bladder positioned in surrounding relation to the packing ring and constrained against radial enlargement so that the bladder expands radially inwardly in response to receipt of pressurized fluid to urge the packing ring into sealing engagement with the shaft.
Abstract: An evaporative cooler for pouches containing a liquid or semi-liquid material such as tomato paste. The cooler includes a housing, a plurality of generally horizontal endless conveyor assemblies arranged one above the other within the housing in vertically spaced relation and each including an endless conveyor member trained over feed and discharge pulleys at the feed and discharge ends of the conveyor assembly.
Abstract: An incontinence device comprising a generally tubular soft latex shape (20) open at both ends. The upper end (24) is smoothly curved and tapered inward (28) to the opening (26) with the latex of minimal thickness and coated on the outside adjacent the opening (26) with a suitable adhesive for contact with the skin about the anal opening. The lower end (22) is partially folded and clipped to permit the device to be affixed with an applicator (30) specifically shaped (32) for the purpose and inserted within the device. The shape and material of the device permits the device to fully stretch and shrink with the anal opening while remaining adhesively affixed to the skin. An extended polyvinyl chloride/urethane mixture of similar elasticity, flexibility and elongation may be substituted for the latex. Because of the very thin wall thickness, the device may be formed as a fiat hollow body (120) which expands in use.
Abstract: In a vertical take-off and landing vehicle, the invention is a method for improving stability by virtue of establishing conversion of thrust vectors over the center of gravity of the vehicle while in the hover position. Through the use of selected angles of inclination of the thrust-generating devices, a positive static stability of the aircraft is maintained. In addition, the spars supporting the thrust-generating devices are mounted in a fixed angular relationship to the centerline of the aircraft's fuselage, to achieve the desired inclination of the thrust vectors of the lift-generating devices toward the centerline of the vehicle, by simple rotation of the spars on which the lift-generating devices are mounted.
Abstract: A head valve for maintaining a desired pressure head in a vehicle fuel tank which responds automatically to pressure changes in the filler pipe corresponding to a change from normal vehicle operation to a refueling operation to adjust the pressure head maintained by the head valve. In a vehicle fuel system including a filler pipe selectively opened and closed by a cap, the valve of the present invention responds to pressure changes near the filler pipe inlet upon removal of the cap to increase the pressure head it maintains in fuel tank 10 and prevent the fuel tank from being overfilled. When the refueling operation is completed and the cap is replaced, the change in pressure near the filler pipe inlet operates the valve to decrease its head valve closing force and reduce the pressure head maintained in the tank for normal vehicle operation.
Abstract: An adapter for use in an SKS type carbine to permit attachment and detachment of a standard box magazine. The adapter includes a forward latch projection which engages the fixed attachment site of the carbine, and a rear projection, the side edges of which seat on an internal shoulder of the stock of the carbine. The rear projection also includes a cutout portion configured to engage a front portion of the top of the box magazine.