Patents Represented by Law Firm Dithmar, Stotland, Stratman & Levy
  • Patent number: 4322256
    Abstract: An alloy steel having superior ductility and a low rate of work hardening for use in severe cold forming processes to provide products with high static and dynamic strength, the alloy steel consisting essentially of from about 0.28% to about 0.33% by weight carbon, from about 0.25% to about 0.65% by weight manganese, up to about 0.15% by weight silicon, from about 0.0005% to about 0.0035% by weight boron, from about 0.4% to about 0.7% by weight nickel, from about 0.4% to about 0.6% by weight chromium, from about 0.15% to about 0.25% by weight molybdenum, and the remainder being iron with minor amounts of impurities and additional alloying elements; a high strength forged tool made from the alloy steel; and the method of forming high strength forged tools including the steps of providing a solid metal slug of the alloy steel, annealing the metal slug for spheroidization to a hardness in the range R.sub.B 70 to R.sub.
    Type: Grant
    Filed: June 18, 1980
    Date of Patent: March 30, 1982
    Assignee: Snap-on Tools Corporation
    Inventor: Gary S. Henning
  • Patent number: 4322082
    Abstract: A spinning target assembly for a pinball game includes a molded one-piece frame having a base adapted to be secured to the underside of the playfield board and two spaced-apart upright posts which project through complementary openings in the playfield board and extend a predetermined distance thereabove. A spinner is rotatably mounted between the posts and includes a shaft having an offset central portion which is encapsulated in a molded plastic target. One end of the shaft has secured thereto a cam received in a recess in the top of one post for camming engagement with a connecting rod which extends downwardly through a longitudinal bore in the one post for actuation of the contacts of a switch mounted on the base, and the other end of the shaft is rotatably received in a radial bore in the other post. A cap is removably latched to the top of the one post to retain in place the cam and the associated end of the shaft.
    Type: Grant
    Filed: January 5, 1981
    Date of Patent: March 30, 1982
    Assignee: Wico Corporation
    Inventor: Albin Peters
  • Patent number: 4322006
    Abstract: A display unit used with an apertured support for displaying a plurality of objects with two fixtures each having a body portion with top and bottom edges and two spaced engagement prongs extending outwardly from the body portion at junctures spaced inwardly from the top edge and in use extending through apertures in the apertured support to mount the fixture thereto, a spacer extending from the body portion of each of the fixtures for maintaining each fixture a predetermined distance from the apertured support, a container having upstanding front, rear and side walls connected by a bottom, and mounting means on at least one of the front and rear walls including a lip generally parallel to and spaced from the associated wall defining a dome-shaped channel therebetween with spaced notches in the lip to ensure contact between the associated fixture top edge and the channel top surface and dome-shaped braces in the channel bracketing each notch to provide strength to the mounting means, the bottom edge of each f
    Type: Grant
    Filed: January 14, 1980
    Date of Patent: March 30, 1982
    Inventor: Howard J. Marschak
  • Patent number: 4322247
    Abstract: An alloy steel having superior ductility and a low rate of work hardening for use in severe cold forming processes to provide products with high static and dynamic strength, the alloy steel consisting essentially of from about 0.28% to about 0.33% by weight carbon, from about 0.25% to about 0.65% by weight manganese, up to about 0.15% by weight silicon, from about 0.0005% to about 0.0035% by weight boron, from about 0.4% to about 0.7% by weight nickel, from about 0.4% to about 0.6% by weight chromium, from about 0.15% to about 0.25% by weight molybdenum, and the remainder being iron with minor amounts of impurities and additional alloying elements; a high strength forged tool made from the alloy steel; and the method of forming high strength forged tools including the steps of providing a solid metal slug of the alloy steel, annealing the metal slug for spheroidization to a hardness in the range R.sub.B 70 to R.sub.
    Type: Grant
    Filed: June 18, 1980
    Date of Patent: March 30, 1982
    Assignee: Snap-on Tools Corporation
    Inventor: Gary S. Henning
  • Patent number: 4319934
    Abstract: An alloy steel having superior ductility and a low rate of work hardening for use in severe cold forming processes to provide products with high static and dynamic strength, the alloy steel consisting essentially of from about 0.28% to about 0.33% by weight carbon, from about 0.25% to about 0.65% by weight manganese, up to about 0.15% by weight silicon, from about 0.0005% to about 0.0035% by weight boron, from about 0.4% to about 0.7% by weight nickel, from about 0.4% to about 0.6% by weight chromium, from about 0.15% to about 0.25% by weight molybdenum and the remainder being iron with minor amounts of impurities and additional alloying elements; a high strength forged tool made from the alloy steel; and the method of forming high strength forged tools including the steps of providing a solid metal slug of the alloy steel, annealing the metal slug for spheroidization to a hardness in the range R.sub.B 70 to R.sub.
    Type: Grant
    Filed: June 18, 1980
    Date of Patent: March 16, 1982
    Assignee: Snap-on Tools Corporation
    Inventor: Gary S. Henning
  • Patent number: 4317303
    Abstract: An illuminated display device includes a molded housing receiving therein a circuit board having light elements thereon projecting forwardly therefrom, the housing being closed by a transparent front cover. Embossments on the housing and the front cover cooperate firmly to position the circuit board therebetween in the housing. The cover also has forwardly projecting embossments defining recesses to accommodate the light elements. A display sheet may be disposed in the housing in front of the circuit board and/or an indicia holder may be mounted on the obverse surface of the cover. Support means are provided for mounting the housing in a display orientation.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: March 2, 1982
    Assignee: Market Products, Inc.
    Inventor: Morton A. Sernovitz
  • Patent number: 4316690
    Abstract: A capped bolt having a threaded shank adapted to receive a nut thereon and a bolt head laterally larger than the shank having a lead surface adjacent the threads. A rigid thermoplastic cap capable of cold flow deformation substantially surrounds the bolt head and has an annular lip in contact with the lead surface having a free end thereof near the shank threads. The annular lip has both exterior surfaces thereof facing the shank such that a line tangent to each surface intersects the shank. When the nut is tightened on the bolt, the lip cold flows into an oversized aperture of at least one of the two or more members being bolted and between the threads providing a hermetic seal.
    Type: Grant
    Filed: May 14, 1980
    Date of Patent: February 23, 1982
    Inventor: Ronald L. Voller
  • Patent number: 4316555
    Abstract: A system for dispensing fluids including a closed container having a manually actuated dispensing pump carried therebeneath, the container being separated by a partition into a lower reservoir compartment and an upper refill compartment, the latter adapted to enclose therein a removable refill pouch; a refill well is provided in the partition and disposed in the refill well is a hollow tubular member extending upwardly thereinto with a refill aperture extending therethrough; the refill pouch has a flexible wall hermetically sealed and containing fluid, and a docking adaptor loosely disposed within the pouch for insertion into the refill well so as to push the wall of the pouch upon the piercing member to pierce the wall to provide an opening for discharge of fluid from the pouch through the refill aperture and into the lower reservoir compartment; a slot in the wall in the upper refill compartment prevents accumulation of free fluid therein.
    Type: Grant
    Filed: March 3, 1980
    Date of Patent: February 23, 1982
    Assignee: Steiner Corporation
    Inventor: Randel P. Smith
  • Patent number: 4316184
    Abstract: A photosensor circuit produces a first sensor signal having an amplitude related to the quantity of smoke sensed thereby. An ionization sensor circuit produces a second sensor signal having an amplitude also related to the quantity of smoke sensed thereby. A first circuit provides a first output only when both the sensor signals exceed a first level. A second circuit provides a second output when either of the sensor signals exceeds a second higher level. An alerting-signal generator is coupled to both of the circuits and is responsive to either output to provide an alerting signal.
    Type: Grant
    Filed: July 27, 1979
    Date of Patent: February 16, 1982
    Assignee: Pittway Corporation
    Inventor: Richard A. Nagel
  • Patent number: 4313700
    Abstract: Slowdown mechanism is provided in a fare collection system pneumatically conveying coin and paper money from a fare box to a storage vault. The air stream carrying the contents of the fare box is conveyed into the top of a downwardly inclined slowdown chamber having an outlet door at the lower end thereof. Paper is drawn off from the slowdown chamber upwardly through a paper-air conduit. A valve is disposed between the slowdown chamber and the outlet door thereof. Automatic control mechanism opens the valve and the door when paper is being conveyed from the fare box, closes the valve and door when coins are being conveyed and opens the valve and door to empty coins from the slowdown chamber into the associated storage vault.
    Type: Grant
    Filed: May 14, 1980
    Date of Patent: February 2, 1982
    Assignee: Transit Systems Technology, Inc.
    Inventors: Jim H. Gomez, Jose E. Davila
  • Patent number: 4310749
    Abstract: A fare collection system using a bus fare box that receives and counts paper currency and paper transfers and tickets into a paper collection chamber and receives and counts coins into a coin collection chamber and receives and collects operating data into a data storage unit, the operating data including fare classification, bus identification and mileage; a secure coupling is made to the fare box chambers and the data storage unit after satisfying mechanical and pneumatic and electrical security devices so as pneumatically to convey from the chambers the papers and coins therein to a central processing unit and to convey the data stored in the data storage unit to a data collection center; the paper is first conveyed in an air stream and separated from the air stream and deposited into a storage vault therefor, after which the coins are conveyed to a coin slowdown device and then discharged to a sorter-counter-recorder for coins and then to a secure storage vault, the air stream being pulsed during conveyin
    Type: Grant
    Filed: May 14, 1980
    Date of Patent: January 12, 1982
    Assignee: Transit Systems Technology, Inc.
    Inventors: Jim H. Gomez, Jose E. Davila
  • Patent number: 4307970
    Abstract: A shorthand typewriting machine includes a standard keyboard having two rows of upper keys respectively corresponding to consonant characters and an asterisk character all positioned for operation by the fingers, and a lower row of keys respectively corresponding to vowel characters and disposed for operation by the thumbs. An extension key is attachable to the asterisk key for ganged operation therewith, the extension key being disposed in use in the lower row of keys for operation by the thumbs in conjunction with any one or more of the vowel keys for readily printing an asterisk character in conjunction with a vowel character to indicate the long sound thereof. A retractable extension key is shown which can be retracted when not in use and a detachable extension key is shown which can be removed completely from the asterisk key when not in use.
    Type: Grant
    Filed: May 29, 1980
    Date of Patent: December 29, 1981
    Assignee: The Hedman Company
    Inventors: Carroll B. McGaughey, Jr., John Kreidich
  • Patent number: 4304271
    Abstract: A railway train including a plurality of interconnected tank cars, each car comprising a tank with a lading conduit extending the length thereof and having first and second pipes communicating with the interior of the tank with one of the pipes extending to the bottom of the tank and the other terminating adjacent to the top of the tank, the lading conduits of adjacent cars being interconnected by flexible connecting conduits; valve mechanism in the lading conduits and the first and second pipes for closing the lading conduit between the first and second pipes and opening the first and second pipes during loading of fluid lading into the tank and during unloading of fluid lading from the tank and for closing the first and second pipes during transporting of the tank; also disclosed is a loading system and an unloading system for a train of such tank cars.
    Type: Grant
    Filed: February 21, 1980
    Date of Patent: December 8, 1981
    Assignee: General American Transportation Corporation
    Inventor: Erling Mowatt-Larssen
  • Patent number: 4303365
    Abstract: A stacker/unstacker for receptacles such as bread pans or baskets or the like includes a pair of laterally spaced-apart endless chains having receptacle carriers mounted therebetween for conveying receptacles between an infeed-outfeed conveyor and the top of a receptacle stack. The conveyor chains are horizontally spaced-apart in a direction perpendicular to the lateral direction with the carriers mounted for rotation about two spaced-apart axes which are respectively fixed with respect to the chains so that the carriers are stably held in a predetermined orientation and undergo only translational movement along the conveyor path. The path has a transfer portion at the top of the stack wherein the carriers and carried receptacles remain stationary for a time during which the carriers are moved between support and release conditions to pick up or deposit receptacles at the top of the stack. Indexing mechanism moves the transfer portion vertically to keep it at the top of the stack as the stack height changes.
    Type: Grant
    Filed: October 5, 1977
    Date of Patent: December 1, 1981
    Assignee: Velten & Pulver, Inc.
    Inventors: Maynard R. Euverard, Henry A. Heide, James J. Diver
  • Patent number: 4302724
    Abstract: A pickup probe for engine timing which is responsive electrically to an indicator on a rotating engine part. The free end of the probe is adapted to extend through an access opening in an engine member into proximity with the indicator on the rotating engine part. A sensor is contained within the free end portion of the probe. The probe includes a mounting means adapted to be detachably secured to the engine member adjacent the aforesaid access opening.
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: November 24, 1981
    Assignee: Snap-on Tools Corporation
    Inventors: Donald D. Grover, Norbert C. Neumann
  • Patent number: 4301942
    Abstract: An insulated container with a double wall construction having a removable partition centrally located within the container dividing the container into two compartments. A top is pivotally mounted on the partition and is constructed to close one of the compartments at a time. Liquid in one compartment flows to the other compartment through a connection provided at the bottom of the partition. The container, the partition and the top are all thermally insulated.
    Type: Grant
    Filed: July 20, 1979
    Date of Patent: November 24, 1981
    Assignee: RB Products Corporation
    Inventors: Sam Kupperman, Dennis Kupperman
  • Patent number: 4300313
    Abstract: A fence or railing construction includes two vertical spaced-apart railing posts defining a gateway therebetween and each provided with an elongated vertical guide member which projects into the gateway. A gate is provided with vertical end posts in the form of channel members, the slots of which are dimensioned for respectively receiving therein the guide members, the gate being dimensioned so that the guide members can be inserted into the slots of the gate end posts only by vertical sliding movement. The railing posts and gate end posts are channel members of substantially identical transverse cross section. Two different forms of channel member are disclosed.
    Type: Grant
    Filed: December 13, 1979
    Date of Patent: November 17, 1981
    Assignee: Lyon Metal Products, Incorporated
    Inventor: Mark H. Steinke
  • Patent number: 4299423
    Abstract: A knockdown settee comprising a pair of double leg members each including two legs, two seat assembly supports and connecting spacers all disposed in a generally common plane; the pair of leg members are rigidly connected by means of a U-shaped cross bar having two legs connected by a bight to create a wedging action, to provide a rigid construction for a seat assembly including a seat, a back and a pair of arms pivoted at the free ends respectively to the sides of the seat and the back. Pins rigidly connect the rear of the seat to the back when the back is pivoted by the arms to the operative position and spaced friction clips are provided at the bottom of the seat for engagement of adjacent seat assembly supports. The seat and the back are moveable into substantial alignment and the double leg members and cross bar when separated may lie on the seat and back below the level of the arms, thereby minimizing space required for packaging and storage.
    Type: Grant
    Filed: December 13, 1979
    Date of Patent: November 10, 1981
    Assignee: Plantation Patterns, Inc.
    Inventor: Herbert C. Saiger
  • Patent number: 4288270
    Abstract: There is disclosed a strapping machine for applying a plastic strap around an object, tensioning the strap and heat-sealing together overlapping portions of the strap, including a retractable heating member movable between the overlapping strap portions and a pressure-applying means including a pressure block with a tiltable universal joint coupling for pressing the overlapping strap portions against the heating element with a first relatively light pressure to melt the facing surfaces thereof. The heating element is withdrawn while the pressure-applying means presses the strap thereagainst with the first pressure, and then the melted strap portions are pressed together with a strong second pressure to complete the seal. A cam with a yieldable section controls the first pressure and a compression spring controls the second pressure. While retracted, the heating element is raised to a higher temperature for burn-off of strap residues.
    Type: Grant
    Filed: June 4, 1979
    Date of Patent: September 8, 1981
    Assignee: Interlake, Inc.
    Inventors: Alan T. Mossell, James R. Simmons, Charles G. Middleton
  • Patent number: D263180
    Type: Grant
    Filed: April 13, 1979
    Date of Patent: March 2, 1982
    Assignee: Steiner Corporation
    Inventor: Walter B. Herbst