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Patents Published on 02/03/1981


See All Patents Issued In 1981


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NumberTitleIssue Date
4248317Load cell apparatus
Apparatus is provided for mounting a load cell unit between the fixed support and shiftable force responsive structures of a weighing scale or other force measuring equipment in an improved manner minimizing to a point of virtual elimination the accuracy ...
02/03/1981
4248318Railway car truck load indicator
This relates to a load spring indicator for a railway car truck for indicating the load condition of springs supporting the bolster on the truck side frame. A reference is carried by the bolster and an indicator is carried by the truck side frame. The bol...
02/03/1981
4248319Circuit arrangement for connecting at least two teleprinters to a common connection line
An apparatus for connecting a selected one of two teleprinters to a common communication line includes a control unit associated with each teleprinter and an analysis circuit connected to both control units and to the common line through a line interface ...
02/03/1981
4248320Air cushion vehicle flexible skirts
An apertured flexible sheet component for an air cushion vehicle flexible skirt, such as an apertured section of a flexible skirt bag member, comprises reinforced flexible sheet material including a reinforcing fabric having substantial spacings between g...
02/03/1981
4248321Device for regulating the traveling speed of a motor vehicle
A motor vehicle speed regulating device having a desired speed setting device, an actual speed detecting device, and an acceleration controlling device which operates to regulate the rate of acceleration upon changes made in the adjustment of the set spee...
02/03/1981
4248322Security device for fuel tank cap of a two-wheeled vehicle
A security device for a fuel tank of a two-wheeled vehicle having a front fork, which can be locked in a position while it forms an angle other than 180° with respect to the longitudinal plane of symmetry of the vehicle. The device includes a fuel tank c...
02/03/1981
4248323Electric vehicle with displaceable battery pack
A vehicle which is driven by an electric motor provided with a battery pack, or by an internal combustion engine, comprises a main body portion and a frame which is slidable with respect to the main body portion and which carries the internal combustion e...
02/03/1981
4248324Seismic vibrator and method for improving the output of a seismic vibrator
A method and apparatus for improving the power output of a seismic vibrator are provided. Compliant elements with variable stiffnesses are interposed between and connected to the holddown mass and the baseplate. When the compliant elements have a first st...
02/03/1981
4248325Tackable sound absorptive panel
An improved sound absorptive tackable space dividing wall panel or similar article in which a wire mesh screen is disposed within the sound absorptive material a distance from the tackable surface less than the length of the tack pin, thereby providing ad...
02/03/1981
4248326Portable, board-gripping platform support
A portable, lightweight, board-gripping support for a conventional board includes four rectangular, tubular pieces. The four pieces are configured and connected to form generally an A-shape in a single plane. Bar members form the upper and lower cross mem...
02/03/1981
4248327Elevator system
An elevator system including at least one elevator car mounted for movement in a building to serve the floors therein, and pushbuttons for entering calls for elevator service. Calls for elevator service initiated by the pushbuttons are sequentially displa...
02/03/1981
4248328Sliding caliper disc brake
The present invention is concerned with a sliding caliper disc brake having a torque member and a caliper incorporating at least one hydraulic actuator. The caliper is attached to the torque member for sliding movement relative thereto and is arranged to ...
02/03/1981
4248329Disc brakes having an improved dust-proofing structure
An improved disc brake having a dust boot for excluding dust from the cylinder bore. A thermo-insulating member is arranged in the heat conduction path leading from the rotor to the dust boot to protect it from deterioration due to heat....
02/03/1981
4248330Control system to apply vehicle brakes during a transmission directional shift
A hydraulic control system for a multi-directional multi-speed transmission for the power train of a vehicle includes means responsive to the directional shift of the transmission at a predetermined minimum speed to automatically apply the brakes of the v...
02/03/1981
4248331Clutch-brake controls for a lawn and garden tractor
A combined clutch and brake control is provided for a lawn and garden tractor of the type including a traction drive transmission, formed in part by an infinitely variable pulley, and including a traction drive brake. The control includes a clutch brake p...
02/03/1981
4248332Fluid gear coupling
The present invention is drawn to a fluid gear coupling in which the lock up RPM between the drive member or power input shaft and the driven member or power output shaft is variable depending on the torque or power applied to the drive member or power in...
02/03/1981
4248333Vehicle transmission with an automatic clutch
A vehicle transmission with an automatic clutch is disclosed in which for gear shifting the clutch is disengaged with the assistance of a vacuum of a source of vacuum, via a control valve having a solenoid actuated clutch release valve and a clutch servo....
02/03/1981
4248334Recycling apparatus
A recycling apparatus and method for accepting the return of selected types of used containers and for dispensing compensation for the deposit in the apparatus of an approved type of container. A returned container is placed into a depository in the appar...
02/03/1981
4248335Key-operated actuator
A key-operated actuator includes a frame, an elongated bolt having a driving connection to the device to be actuated, a tumbler mechanism which enables bolt rotation only when a key having proper configuration is inserted. A frangible portion on the key a...
02/03/1981
4248336Protective shield for a parking meter winding ring
A parking meter mechanism is protected against illegal actuation by a flat annular shield retained in position coaxially with the mechanism winding ring by a leaf spring. The shield surface adjacent the winding ring is coated with a low friction material ...
02/03/1981
4248337Equipment for handling bulk material
An endless scraper chain carried by a bridge is provided with spaced scraper flights. The scraper chain is driven so as to move its lower course toward one end to thereby move bulk material to a roller bed extending under that one end. The roller bed is c...
02/03/1981
4248338Rotator for inspecting containers
A device for interrupting the travel of an object, such as a container, on a conveyor belt during a manufacturing operation includes a driven wheel and at least one idler resiliently urged towards the drive wheel. Both wheels are spaced apart a distance l...
02/03/1981
4248339Gantry scraper
A gantry scraper for the clearing of dumps which can function in closed buildings and can clear substantially the entire area under the scraper. A vertically swingable scraping jib is provided in combination with a tensioned clearing rope or the like whic...
02/03/1981
4248340Detachable conveyor bucket
A conveyor bucket and bracket assembly in which the bucket is attachable and separable from the bracket without the use of screws, bolts or other fasteners....
02/03/1981
4248341Roller conveyor and its track
This invention relates to a roller conveyor and its track. Several inverted U-shaped supporting tracks are provided in sequence, which carry flanged rollers projecting above them. Alignment is secured by milling right-angular flats on the edges of the U-s...
02/03/1981
4248342Blast suppressive shielding
Manufactures, apparatus and processes for shielding the hazards of explosives, pyrotechnics and propellants during manufacture, demolition, demilitarization storage, transportation and use....
02/03/1981
4248343Device and method for protecting baled hay from moisture
A device for protecting baled hay from moisture damage includes a cover that fits over the hay bale and fasteners that project into the bale and connect with the cover so as to secure the cover in place. Each fastener has projections which lie in a single...
02/03/1981
4248344Tape cassette
A tape cassette is formed with a housing having a pair of projecting members extending therefrom and with a pair of engaging recesses in order to enable the tape cassette to be releasably joined with other similar cassettes by engagement of the engaging r...
02/03/1981
4248345Protective cap for a magnetic recording tape cassette
A protective cap for protecting the magnetic tape of a tape cassette from damage and exposure to dust while the tape cassette is not in operation. A plastic strip covers the apertures of the engaging wall of the tape cassette and is held in position by pr...
02/03/1981
4248346Shipping container for semiconductor substrate wafers
A shipping container for semiconductor substrate wafers including a rectangular receptacle having a plurality of outwardly extending aligned and opposing vertical rib members which are spaced on the interior opposing sides of the receptacle, and interchan...
02/03/1981
4248347Packaging for florist arrangements
A safety packaging for floral arrangement comprises a platform for engagement with a container, a support rod for embedding in a floral arrangement and extending above such arrangement, a plastic bag for receiving platform with arrangement, the bag being ...
02/03/1981
4248348Package for compounding rubber and compounded rubber
A package comprised of (A) an article selected from unvulcanized rubber or compounding ingredients therefor and (B) a protective film of a thermoplastic ethylene/vinyl acetate copolymer containing anti-block agent and having a vinyl acetate content in the...
02/03/1981
4248349Tray for ampoules or the like
A one piece polymeric plastic tray has a plurality of U-shaped troughs. At least one upright end wall is integral in one piece with and pivotably connected to said partitions at the bight portion of the troughs. Said end wall and at least some of said par...
02/03/1981
4248350Corner post with integral lock
The corner post of the present invention is constructed from a one piece blank of cut and scored corrugated paperboard that includes an integral locking means for securing the corner post in its usable condition. The corner post blanks are normally shippe...
02/03/1981
4248351Packaging container with a pouring spout
A packing container with an unfoldable pouring spout which has an inherent tendency to assume an unfolded position when the container has been opened is disclosed. The ability of the pouring spout to tend to assume the unfolded position is achieved by hav...
02/03/1981
4248352Wire pocket display device
A wire pocket display device including a wire frame receptacle having a pair of laterally spaced pegs projecting rearward therefrom for reception within a pair of laterally spaced apertures in an upright support member, in which at least one of the pegs i...
02/03/1981
4248353Apparatus for collecting drippings from a wet load carried by a crane
Apparatus is provided for collecting drippings from a wet load carried by a crane having a carriage 14, 16 to which elements 10, 12, 18, 20, 22 for lifting loads are mounted for movement up to and down from a load carrying station beneath the carriage. Th...
02/03/1981
4248354Rotary locksetting mechanism for a rigid jaw coupler
A Willison rigid jaw coupler with a locksetting pawl for interlockingly engaging the locklifting lever, when the lock is in lockset, is described. A special fulcrumming of the pawl is provided to cause disengagement of the pawl from the lever to allow the...
02/03/1981
4248355Closure for sample vials
Closure for a sample vial utilized to introduce sample into a gas chromatograph in accordance with the head space method. The closure includes a flexible disc for closing the opening through the neck of the vial and overlying the margin of the neck about ...
02/03/1981
4248356Sealing method
The invention provides a method of improving the gastightness of a seal formed between two components consisting of a closure cap applied to seal a container. An ultrasonically vibrating horn is applied to the closure cap to heat the sealing surfaces of t...
02/03/1981
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