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| Number | Title | Issue Date |
| 4271537 | Protective helmet with releasable face guard apparatus This invention is a protective helmet with releasable face guard apparatus that resembles a football helmet having considerable shock absorbing thickness and a face shield member that is releasably connected to the helmet. More particularly, the protectiv... | 06/09/1981 |
| 4271538 | Safety spectacles Safety spectacles (10) comprising a one piece flanged and curved front face piece (12) adapted to wrap around the forehead to the wearers temples. The face piece (12) is provided with a nose piece (14), a substantially distortion free spherical viewing an... | 06/09/1981 |
| 4271539 | Quick-change toilet system A quick-change toilet system capable of being readily converted between a non-flushing toilet and a recirculating flushing toilet is disclosed. The system includes a waste holding tank with an open frame member mounted on the top thereof. The system utili... | 06/09/1981 |
| 4271540 | Sewage system with comminutor A sewage system for handling human waste provides for comminution of excrement and other material processed therein. The system is primarily of use in a system wherein the toilets empty into sewage pipe leading to a septic field and avoids the need for fr... | 06/09/1981 |
| 4271541 | Apparatus for intermittent delivery of fluid under pressure Apparatus for intermittent delivery of a fluid under pressure wherein a plunger having a conduit is disposed in a housing for reciprocal, rotary motion and responsive to fluid pressure at the intake end, by means provided in the plunger pops out of the ho... | 06/09/1981 |
| 4271542 | Swimming pool platform and components A vertically adjustable pool platform, for use in a swimming pool, means to vertically raise and lower the platform, and means connecting the platform to the means to vertically raise and lower the platform, the pool platform being buoyant to float on the... | 06/09/1981 |
| 4271543 | Shower bar with sliding spray head A shower device has a bar on which slide a spray head support and a manually operable grip. At least two continuous chains, one connected to the grip and another to the spray head support, pass over a respective pulley mounted at each end of the bar. At o... | 06/09/1981 |
| 4271544 | Animal commode A commode for animals comprising a base member having an opening formed therein, the opening surrounded by a box-like enclosure open at the top. The portion of the base interior to the enclosure is sloped downwardly toward the opening to aid an animal in ... | 06/09/1981 |
| 4271545 | Adapter for adjustable hospital beds An adapter universally applicable to manually operable hospital beds from which the handles or cranks are removed in order to expose the drive pins of the operating shafts, and comprised of a housing adapted to right and left installation to the shaft cov... | 06/09/1981 |
| 4271546 | Inflatable lift for patient's bedpan use This invention relates to a device to be used by patients who when confined to bed are required to use bedpans and in particular a device having an inflatable portion that is so located in relation to the patients body as to exert a lifting force adjacent... | 06/09/1981 |
| 4271547 | Mattress and boxspring extender An extender for a bed which has a boxspring, and mattress resting squarely on the boxspring, and a bed frame is provided. An elongated cushion provides an extended sleeping area adjacent a portion of the perimeter of the mattress. An elongated support whi... | 06/09/1981 |
| 4271548 | Motorboat transom protector A guard for protecting a boat transom from being marred by a marine motor mounted on the transom, comprising a generally U-shaped marine motor mounting protector, adapted to be mounted on the transom, including a base and a pair of legs mounted on the bas... | 06/09/1981 |
| 4271549 | Connection means for a knock-down boat A relatively small watercraft includes a pair of spaced and usually parallel pontoons. A personnel station extends generally between and above the two spaced pontoons. A structural frame of tubular members or bars supports the personnel station; the tubul... | 06/09/1981 |
| 4271550 | Method for submerging an equipment of negative buoyancy The equipment is connected through a line to an auxiliary buoyant element to form an assembly of positive buoyancy, the equipment to be submerged and the auxiliary element being at first held in spaced relationship. The equipment is thereafter dropped int... | 06/09/1981 |
| 4271551 | Binding device for hoses floating on water surface A binding device for hoses floating on the water surface, particularly, for a plurality of hoses arranged in parallel and floating on the water surface and connecting adjacent two hose lines by chains, comprising a resilient cylindrical cushioning body ha... | 06/09/1981 |
| 4271552 | Torpedo floatation device A torpedo recovery system including an expandable sleeve surrounding a portion of the torpedo. Upon activation of the recovery system gas is introduced into the sleeve, causing it to expand. The sleeve is clamped firmly at two distinct longitudinal positi... | 06/09/1981 |
| 4271553 | System for launching and hauling in objects from the sea A method and apparatus for launching and hauling in objects such as life-boats, pick-up boats, small submarines and people from the sea, which includes a floating dock suspended from a yoke connected to a jib attached to a floating vessel, the yoke being ... | 06/09/1981 |
| 4271554 | Combination drill and tap tool An elongated rectilinear tool for formation of a threaded hole in ductile metal by the coining or flowing of the metal. The tool typically is employed to form through threaded holes in a piece of ductile metal, and features a working end having a boring t... | 06/09/1981 |
| 4271555 | Reinforced concrete bridge decking and method of making same Reinforced concrete bridge decking comprises a plurality of substantially identical, removable, interchangeable reinforced concrete panels having protruding tongues at opposite ends supported on and retained in place by resilient, shock absorbing pads. Th... | 06/09/1981 |
| 4271556 | Pipe cleaning apparatus A pipe such as a sewer line or the like is cleaned by advancement therethrough of a rigid tubular member having at its lead end a nozzle for ejecting a stream of water to dislodge debris, etc., followed by a series of rotary cutters and pushes for removin... | 06/09/1981 |
| 4271557 | Shock absorbing floor brush assembly A shock absorbing floor brush assembly for attachment with high-speed floor cleaning machines is provided having a rigid brush disk movably mounted on a shock absorbing hub so that the brush disk rotates with a floating action. The shock absorbing hub is ... | 06/09/1981 |
| 4271558 | Windshield wiper blade refill assembly and adapter clips A wiper blade refill assembly for replacement in a wiper blade pressure distributing superstructure includes a combination of an elastomeric wiping element supported by an elongate backing element and a set of adapter clips having depending pairs of oppos... | 06/09/1981 |
| 4271559 | Toner clean-off head A toner clean-off head utilizing a vacuum for removing liquid toner from a moving record medium having a latent electrostatic image thereon, in which the contact surface of the clean-off head is cylindrical so that the record medium easily conforms to ens... | 06/09/1981 |
| 4271560 | Arrangement for attaching, folding and slidable suspension of curtains, draperies and the like at a curtain rod A curtain suspension device including a curtain clasp which is mounted in the slot of a curtain rod which curtain clasp comprises a needle slide member consisting of an oblong mirror-symmetrical plate provided at one of its longitudinal faces with a proje... | 06/09/1981 |
| 4271561 | Poultry dismembering apparatus Apparatus for disjointing and removing the leg and thigh portions from the backs of poultry leg and back carcasses pendulously supported by the feet from shackles suspended from an overhead conveyor at spaced intervals with the back of each carcass lying ... | 06/09/1981 |
| 4271562 | Fish scaler A plurality of stainless steel wires or blades extend between cylindrical end elements on a spindle and may be stressed as desired to place them under tension. The wires or blades may be straight, that is parallel to the longitudinal axis of the spindle o... | 06/09/1981 |
| 4271563 | Shellfish extraction tool A shellfish meat extraction tool having an elongated body portion which is manually grasped by the user, a connecting portion extending from one end of said body portion, and a unique meat extraction blade formed at the outermost extremity of said connect... | 06/09/1981 |
| 4271564 | Comber-cleaner carding device A carding device of the large rotating carding drum type including a comber-cleaner assembly particularly well suited for combing and cleaning universal flat cards is provided. The comber-cleaner including a worker roller and a stripper roller mounted for... | 06/09/1981 |
| 4271565 | Method and apparatus for regulating out variations in the sliver weight on devices for processing fibre slivers A method of and apparatus for regulating out variations in the sliver weight on processing machines such as cards, carding engines, draw frames and the like wherein a first measuring device measures either the absolute cross-section or the relative variat... | 06/09/1981 |
| 4271566 | Shear attachments using hook and loop fastener elements Various attachments are disclosed employing hook and loop fasteners which are confined in a manner to permit engagement and disengagement only in a shear direction.... | 06/09/1981 |
| 4271567 | Automatic lock slider for slide fastener An automatically locking slider includes a locking spring for locking the slider in position on a slide fastener. The locking spring has at one end a locking prong movable into and out of a slide fastener guide channel and at the other end a first retaini... | 06/09/1981 |
| 4271568 | Method of cutting columns of thread loops A pile fabric, especially velvet, can have a selection of yarn strands appearing on one of its faces severed by means of a focused laser beam. According to the process of the invention the zone of focus of the laser beam is brought successively into conta... | 06/09/1981 |
| 4271569 | Tenter apparatus for fabric web tenter machines Tenter apparatus for fabric web tenter machines comprises a hook body carried by a circulating conveyor, a tenter table fixedly connected to the hook body and serving as support for the fabric web edge, and a hook flap pivotally mounted on the hook body a... | 06/09/1981 |
| 4271570 | Graphite fiber alignment process and apparatus Misaligned strands in a graphite fiber on tape are aligned and wound up on reels with a minimum of degradation by the steps of: separating the individual strands, diverging the strands, aligning the strands and winding the individual strands onto separate... | 06/09/1981 |
| 4271571 | Process for manufacturing shadow mask of Braun tube for color TV In process for manufacturing shadow mask of Braun tube for color TV comprising steps of subjecting strip of low carbon steel to cold rolling finish, forming holes in the rolled material, cutting it into individual flat masks, annealing each mask at elevat... | 06/09/1981 |
| 4271572 | Machine tool having at least one tool magazine A machine tool comprises a main support with a machine stand on the main support carrying a headstock alongside a workbench which is mounted advantageously for movement toward and away from the headstock. The construction includes a tool magazine support ... | 06/09/1981 |
| 4271573 | Quick-connect interconnection system The construction of complex electrical circuits is simplified by performing all interconnections on one side of a component-receiving board, using slotted beam insulation-piercing connectors. Boards with or without metallization patterns are adaptable to ... | 06/09/1981 |
| 4271574 | Mechanical drive for rotatable mantle roll mounted onto a stationary axle, especially for a deflection-compensated roll mantle of a paper machine The invention relates to a drive for a rotatable mantle roll mounted onto a stationary axle. The mantle is driven by one or more driving gears which are again driven by one or more shafts journalled in a supporting frame located around the stationary axle... | 06/09/1981 |
| 4271575 | Controlled deflection roll A controlled deflection roll comprising a stationary support and a substantially tubular-shaped roll shell rotatable about the stationary support. Hydrostatic pressure or contact elements are provided for the controlled deflection roll and are supported a... | 06/09/1981 |
| 4271576 | Apparatus for applying coupling to hose Manually-operated field apparatus is disclosed for applying a pressed-on coupling to the end of a hose. A frame carries two threadedly-adjustable sets of interleaved clamping plates for clamping a hose end therebetween in a predetermined orientation. The ... | 06/09/1981 |
