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| Number | Title | Issue Date |
| 4290341 | Rotary engine A rotary engine employs one or more flap-type pistons which swing about a fixed pivot. Power is transmitted from the pistons to the output shaft by pins connected to the piston which ride in figure eight grooves in a pair of spaced discs connected to the ... | 09/22/1981 |
| 4271986 | Drink dispenser spigot with splash deflector A drink dispenser spigot comprises a barrel, a valve plunger, a stem for the plunger, and a spout opening in the barrel. A splash deflector collar about the stem is movable therewith. As the spigot is opened by withdrawing the plunger so that it passes ov... | 06/09/1981 |
| 4262392 | Wire belt splicer A device for splicing the free ends of a wire belt comprised of pivotally interlocked laterally extending zigzag-shaped and longitudinally spaced apart wires or strips. The zigzag shape of each wire or strip results in each end of the belt having longitud... | 04/21/1981 |
| 4261548 | Device for hydraulic lift of reinforced concrete A hydraulic jack provided for raising, leveling, and moving steel reinforced concrete. A hole is drilled vertically in the concrete to be lifted, and two wedges, a tapered and a straight wedge are lowered into the aperture in vertical contact. The tapered... | 04/14/1981 |
| 4258506 | Apparatus for scale and slag removal A slag removing machine includes a conveyor movable generally vertically on a parallelogram linkage. The conveyor carries steel slabs below a fixed vertical sanding belt surfacing unit. The conveyor is supported on air bags.... | 03/31/1981 |
| 4258657 | Paint striper A striper (10) has a spring-loaded striping head (30) which connects with a reservoir (16) only when the head (10) is depressed by contact with a workpiece, and which does not feed paint or other striping material at any other time. A long, closely fitted... | 03/31/1981 |
| 4257438 | Bulk catalyst proportioner Method and apparatus for mixing a carrier gas with a foundry aggregate resin catalyst fluid in which the liquid catalyst fluid is vaporized to a gaseous state and is thereafter mixed with the carrier gas. A proper proportion between the two gases is estab... | 03/24/1981 |
| 4241590 | Auger flight for comestible freezer A comestible freezer has a freezing barrel with a cold wall, an input end and an output end and a feeder therewithin having a ribbon auger flight helix and a stationary blending bar within the helix. A portion of the ribbon auger flight helix has an outwa... | 12/30/1980 |
| 4240764 | Display structure A display structure having a vertical post and a horizontal rail. The post has a salient side wall with a socket opening therein. The rail has a notched end with a peg projecting therefrom and engaged through the socket opening, thus to support the rail f... | 12/23/1980 |
| 4237010 | Interconnector for filtration modules An interconnector for filtration modules comprises inner and outer integrally bonded coaxial rubber sleeves. The inner sleeve comprises rubber of a lower indentation hardness than the outer sleeve and is relatively soft while the outer sleeve is relativel... | 12/02/1980 |
| 4232051 | Method of separating liquid from soft particulate food solids Liquid such as water or whey is removed from soft particulate food solids such as Cottage cheese curd utilizing a pressing belt for high speed gradual compression without significant damage to the food solids. This is accomplished by compressing the food ... | 11/04/1980 |
| 4230926 | Electric discharge machine with mechanism for orbiting the electrode An electric discharge machine has an electrode and mechanism for driving the electrode on an orbital path. The electrode is mounted on an electrode holder having an upstanding post. The electrode is driven on its orbital path by a rotor about the post. Th... | 10/28/1980 |
| 4230213 | Liquid rejecting coin chute A coin operated dispensing machine has a coin chute and an electrical coin mechanism which is subject to malfunction when exposed to liquid entering through the coin chute. The coin mechanism is protected from such liquid by providing the coin chute with ... | 10/28/1980 |
| 4226286 | Pitless adapter A pitless adapter for a well casing is provided with an O-ring seal surrounding the opening in the well casing for the outlet from the pitless adapter to the service pipe. A downwardly facing hook within the area sealed by the O-ring supports the pitless ... | 10/07/1980 |
| 4222291 | Conical roller chain indexing device A fixture for indexing a work piece, a machine spindle, or the like permits indexing a single rotation of the work piece or other mechanism in any integral number of equal divisions. Stops for the divisions are made to suit the job by assembling a standar... | 09/16/1980 |
| 4222157 | Rope tightener A rope tightener for a rope under tension such as a tent rope formed from a single piece of plastic forming two pairs of parallel legs, the respective legs of each pair having opposed hooks formed at the end of the leg to cooperate in forming a hole throu... | 09/16/1980 |
| 4223063 | Pattern drawing of webs, and product produced thereby A process for differentially drawing films and non-woven fiberous webs for increased drapability and strength of webs including at least in part cold drawable polymeric materials or blends thereof including incompatible polymer blends and polymeric matrix... | 09/16/1980 |
| 4221117 | Aerator proportioner for frozen comestible freezers A frozen comestible freezer has a freezing chamber, a receiving chamber, and a tank of liquid comestible which is fed to the receiving chamber through an aerator proportioner which provides the correct proportion of liquid comestible and air for the aerat... | 09/09/1980 |
| 4217903 | Drainage devices A drainage device, in particular a catheter, provided with an inflatable balloon adjacent one end which is designed to be inserted into a vessel which is to be drained. This insertion end comprises two branches which are interconnected at their free ends ... | 08/19/1980 |
| 4215525 | Tray forming machine Apparatus for forming a tray blank into a tray about its contents. The apparatus includes leading and trailing tray flap folders and side flap folders. The flaps on the tray blank have end tabs which are interconnected in angled oblique relation when the ... | 08/05/1980 |
| 4212547 | Apparatus for blending fluid and soft particulate food constituents Apparatus for blending materials having different consistencies such as a cream dressing and cottage cheese curd. A cylindrical container having a flat bottom is supported with its central axis at an angle of 30° to 60° but usually preferably about 45°... | 07/15/1980 |
| 4208052 | Puzzle game having members arrangeable into preselected sequence Apparatus for playing a game or puzzle comprises a container which houses a plurality of balls of at least two identifiable kinds. The container defines a row of fixed compartments and a slide arranged in the container defines a movable row of compartment... | 06/17/1980 |
| 4199956 | Ice cube making machine An ice cube making machine includes agitator paddles which oscillate or reciprocate in a horizontal path between freezing elements to agitate the water to provide clear ice cubes. An ice cube thickness sensor is carried by the agitating paddle assembly an... | 04/29/1980 |
| 4199054 | Door opening mechanism for feed conveyor A door opener mechanism for the side doors in a feed or grain elevator or conveyor in which the doors are hinged to the sides of the conveyor includes a crank arm pivotally connected to the conveyor at a point intermediate the side walls to provide rotati... | 04/22/1980 |
| 4191307 | Dispenser for plastic bags Disclosed herein is a plastic wall-mounted dispenser primarily for coreless rolled sheet material and in which the plastic material, typically polypropylene, from which the dispenser is made is somewhat yieldable under stress. The dispenser is mounted in ... | 03/04/1980 |
| 4185943 | Drilling and tapping machining apparatus Disclosed herein is a machine tool which is particularly adapted for drilling and tapping holes in electric motor pole pieces with a center drill, drill and tap which are sequentially applied to the same hole. The spindle for each tool is provided with it... | 01/29/1980 |
| 4186072 | Hot gas measuring device A probe comprising a tube made of solid electrolyte material is slidably mounted within a ceramic support tube which is mounted to project into the interior of a furnace. The end of the electrolyte tube is closed and the support tube has open ports or win... | 01/29/1980 |
| 4179907 | Bimetal actuated locking device An interlock device for the door of an appliance, such as a washing machine, to prevent operator access to the spin dryer drum while it is driven or coasting. The device comprises a switch and a bimetal element for being connected in a series circuit incl... | 12/25/1979 |
| 4177902 | Display unit A display unit has rolling panels entirely supported from the bottom and lacks a top frame. Each display panel is carried by wheels on a track which is adjustable to any front and back position with respect to the base of the stand. The top of each displa... | 12/11/1979 |
| 4173008 | Method and apparatus for passive detection of marine objects A method and apparatus for passively detecting, locating and tracking submerged or waterborn objects which generate acoustic radiation as they move through the water, includes a hydrophone array which is linked to a monitoring station by cable or radio tr... | 10/30/1979 |
| 4171052 | Merchandise display unit A headboard and footboard are removably attached to a vertical multiply-slotted standard by means of keys to form a display unit. (These standards may be part of the display structure already mounted in a store). A number of panels are slideably mounted f... | 10/16/1979 |
| 4171120 | Scissors lift work platform A lift with a work platform supported by a scissors linkage on a base includes a single hydraulic cylinder for elevating the linkage. The cylinder is connected between a lower link and a swing arm which is pivotally connected to the linkage. During a firs... | 10/16/1979 |
| 4164833 | Skip-seal mechanism for packaging machine A machine for heat sealing articles between two continuous webs of plastic material comprises two parallel synchronously driven shafts, each of which has a pair of wheels on it which are brought into pressure relationship for heat sealing. One shaft is mo... | 08/21/1979 |
| 4159846 | Tablet arm for wire rod chair A tablet arm attachment for a chair includes brackets with U-shaped channels and outwardly extending flanges to clamp the tablet arm to a support rod from which the tablet arm to a support rod from which the tablet arm is pivoted. A molded plastic bearing... | 07/03/1979 |
| 4159100 | Forms for pre-cast concrete panels Disclosed herein is a concrete form assembly for pre-casting concrete walls which includes a three-piece base plate, side rails and headers which interfit between the side rails and can be adjusted to any spacing for different length and width concrete wa... | 06/26/1979 |
| 4158574 | Hydrolyzed amylaceous product and process of making the same An amylaceous material having alkaline viscosities in the range of 10 to 20 seconds using a 1.3 g sample and 15 to 20 seconds using a 5.2 g sample and having cold water solubles of between 50% and 98% is made by hydrolysis of starting material such as cor... | 06/19/1979 |
| 4153664 | Process for pattern drawing of webs A process for differentially drawing films and non-woven fiberous webs for increased drapability and strength of webs including at least in part cold drawable polymeric materials or blends thereof including incompatible polymer blends and polymeric matrix... | 05/08/1979 |
| 4152820 | Method of expanding shot tip A method of expanding the shot tip in a die cast machine to maintain a sealing fit between the cold chamber and shot tip includes positioning a separate tool with an annular projecting beveled rim in the cold chamber and between the chamber and the movabl... | 05/08/1979 |
| 4142664 | Method of joining titanium clad steel plates A method of butt welding titanium-clad steel plates whereby the steel portions of the abutting plates are first welded together, then the portions of the steel plates adjacent to the titanium portions are metallized with a refractory metal coating, which ... | 03/06/1979 |
| 4142687 | Adjustable arm for shredder hammer In a hammermill or the like and employing hammerheads with sockets which receive the rotor hammer arms, slots are provided in the hammer arms to receive cross pins which extend through apertures in the hammerheads and the slots to hold the hammerheads to ... | 03/06/1979 |
