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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 8057225 | Safety door for rotary kiln A safety door for covering openings in a rotary kiln during maintenance operations on the rotary kiln. The door is affixed to the exterior surface of the rotary kiln and includes a hatch pivotally secured at one side edge thereof by a pivot rod to a frame. A plurali... | 11/15/2011 |
| 7802986 | Thermal processing apparatus A thermal processing apparatus for thermally processing a substrate in a processing chamber includes a heating plate for mounting and thermally processing the substrate thereon, and a lid body covering the heating plate from above to constitute a portion of the proc... | 09/28/2010 |
| 7621741 | Safety door for rotary kiln A safety door for covering openings in a rotary kiln during maintenance operations on the rotary kiln. The door is affixed to the exterior surface of the rotary kiln and includes a hatch pivotally secured at one side edge thereof by a pivot rod to a frame. A plurali... | 11/24/2009 |
| 7389610 | Door system A door system used in a doorway of a pressurizable compartment of a high temperature structure, having a screw for compressing the door and a thrust collar providing clearance between the thrust collar and a bearing member during decompression of the door such that ... | 06/24/2008 |
| 7379663 | Continuous casting installation and process A continuous casting installation includes a furnace (2) for heating metal to a first liquid metal temperature, a degassing unit (4), a filter (6), a heating unit (8) and a casting machine (10). The casting machine (10) incl... | 05/27/2008 |
| 7370648 | Water heater system A housing has a top, a bottom and side walls. A liner has a top, a bottom, and side walls. The liner is fabricated of glass. A space is provided between the liner and housing. Insulation material is provided throughout the space. A heating assembly is provided withi... | 05/13/2008 |
| 7351057 | Door plate for furnace The process chamber of a vertical furnace is provided with a closure, or door, comprising an upper and a lower door plate. The upper door plate has a gas exhaust opening proximate its center, thereby allowing for a symmetrical flow of process gases through the proce... | 04/01/2008 |
| 7341080 | Method for loading pourable material and device for carrying out said method A method for loading a pourable material in a container, the material being supplied by gravity forces through a channel which is arranged in the opening of the container. In order to obtain a desired material distribution in the container, the material, a little bi... | 03/11/2008 |
| 7255039 | Machine for the preparation of beverages A closure mechanism for a beverage preparation machine comprising a fixed lower part and an upper part rotatable relative to the lower part, the upper part being moveable from an open position, in which the upper part is disengaged from the lower part, and a closed ... | 08/14/2007 |
| 7240673 | Flange for flame observation A flange (1) for optical flame observation in a gas turbine includes at least one bore for optical observation, in which bore there is arranged at least one pane (9, 10) for separating the flame-side space, which is in substantially direct communicatio... | 07/10/2007 |
| 7122844 | Susceptor for MOCVD reactor A susceptor for holding semiconductor wafers in an MOCVD reactor during growth of epitaxial layers on the wafers is disclosed. The susceptor comprises a base structure made of a material having low thermal conductivity at high temperature, and has one or more plate ... | 10/17/2006 |
| 7044732 | Rolling process cover A cover for the opening of a process tube of a furnace used in semiconductor manufacturing is comprised of a substantially continuous sheet of metal so that it may be rolled opened and closed while being against the opening of the process tube by a guide frame. The ... | 05/16/2006 |
| 7029505 | Sheet type heat treating apparatus and method for processing semiconductors The single substrate thermal processing apparatus (2) includes a process chamber (5) arranged to accommodate a target substrate (W) and provided with a showerhead (10) disposed on its ceiling. A support member (28) is disposed to support ... | 04/18/2006 |
| 7001178 | Method and apparatus for using a display associated with a dental kiln An kiln for dental restoration components is provided, and comprises an indicator having an image screen for displaying information. The image screen is provided with at least two, and in particular at least three, surface areas with which optically distinguishable ... | 02/21/2006 |
| 6994544 | Wafer scale thermal stress fixture and method A fixture for supporting a plurality of semiconductor chips during the thermal cycling of the chips, including a fluid-permeable bottom screen, a chip-cavity-defining plate supported against a top surface of the bottom screen, a lower attaching mechanism for attachi... | 02/07/2006 |
| 6991455 | Shutter structure of an oven apparatus used in semiconductor or liquid crystal display processes A shutter structure of an oven apparatus used in semiconductor or liquid crystal display (LCD) processes includes a hollow housing and an open device, wherein the housing has a front face, a first face, a second face and a rear face whose edges of two sides are resp... | 01/31/2006 |
| 6957956 | Vertical heat treating equipment A vertical heat-processing apparatus (1) includes a vertical heat-processing furnace (2) having a furnace port (3), a lid (5) movable up and down to open and close the furnace port, and a rotation mechanism (15) disposed on the lid... | 10/25/2005 |
| 6932872 | Heating apparatus using induction heating A heating apparatus which is installed in a low pressure CVD system or annealing equipment for use in semiconductor integrated circuit manufacturing processes for heat-treating wafers on which IC's are to be formed, wherein wafers are uniformly heated, the temperatu... | 08/23/2005 |
| 6884066 | Thermal process station with heated lid Methods and apparatuses to improve the temperature uniformity of a workpiece being processed on a heated platen of a thermal processing station. A heated platen is enclosed in a housing incorporating an additional heat source that uniformly outputs thermal energy in... | 04/26/2005 |
| 6840763 | Wafer processing apparatus A wafer processing system which requires no isolation between the operational areas within the processing system. The system of the present invention includes operational areas, such as a loading area, a transport area, and a reactor or thermal processing area. Adva... | 01/11/2005 |
| 6830723 | Apparatus for treating molten metal having a sealed treatment zone An apparatus for treating molten metal includes a treatment vessel for holding molten metal and a removable cover or hood for the vessel. Sealing means are provided between the cover and the vessel to provide a gas tight treatment zone. The sealing means include mat... | 12/14/2004 |
| 6805555 | Composite curtain assembly for continuous furnace entrance and exit An insulating curtain assembly for a continuous furnace, having an extremely durable woven metal-wire covering protecting a thermal insulating fabric which lacks durability. A plurality of horizontally oriented hinges enable the curtain to closely follow a top surfa... | 10/19/2004 |
| 6709525 | Low pressure chemical vapor deposition apparatus of vertical type for fabricating semiconductor devices A vertical type chemical vapor deposition apparatus includes a process chamber having a cylindrical inner tube and a cap shaped outer tube surrounding and apart from the inner tube. A manifold is coupled with lower portions of the inner and outer tubes, and has a lo... | 03/23/2004 |
| 6705858 | Door assembly for rotary furnace A rotary furnace includes a drum and a frame supporting the drum for rotation about a nominally horizontal rotational axis. The frame and the drum are supported for pivotal movement about a horizontal pivotal axis. A door supported on the frame normally closes the f... | 03/16/2004 |
| 6694683 | Sight glass retainer system and method for making same A sight glass retaining system is provided for mounting a sight glass to a support panel, such as for viewing combustion or other processes. The system includes a retainer which forms a continuous frame and has lateral flanges for locating the sight glass... | 02/24/2004 |
| 6676407 | Warp resistant access door assembly for a high temperature combustion chamber A warp resistant fuel feed door assembly for use in injecting supplemental fuel into a high temperature combustion chamber such as a rotating cement kiln without substantial loss of heat or combustion gases. The apparatus, which is positioned on the exter... | 01/13/2004 |
| 6672867 | Structure for fitting control knobs and a handle onto a control panel of an oven A structure for fitting a control knob and a handle onto a control panel of an oven of the present invention comprises a control panel, a plurality of positioning sets, at least a control knob and a handle, wherein the positioning sets function to insulat... | 01/06/2004 |
| 6669895 | Tilting rotary furnace system for recovery of non-ferrous metals from scrap or dross and method of operation A furnace system for recovering a non-ferrous metal from a charge of material containing the metal. The furnace system has a furnace chamber having walls defining a refractory chamber, the refractory chamber receiving the charge of material and the metal ... | 12/30/2003 |
| 6648637 | Seal and sealing method for temperature control chamber doors A system for sealing a lower edge of a temperature control chamber door to a temperature control chamber housing when the door is closed has a pair of opposed radiused corners provided at opposed lower corners of the door opening, and a resilient seal mem... | 11/18/2003 |
| 6609908 | Replaceable heater cover A replaceable heater cover including a frame that is shaped to be removably coupled to an outer surface of a heater and an insulating material coupled to the frame. The insulating material is shaped to receive a vessel thereon during heating of the vessel... | 08/26/2003 |
| 6602069 | Plug members for steel furnaces A dart has a metal bar 1 passing through a ceramic, shaped, dart head 2 and then through a cylindrical ceramic dart stem 3. A sleeve 4 of a carbonaceous or reactive material is provided about the stem 3 or a layer of that material can be formed on the low... | 08/05/2003 |
| 6554610 | Methods for constructing a combustion chamber access door and associated apparatus An inner combustion chamber access door member for a fuel-fired water heater has main and pilot burner structures respectively supported thereon by gas supply tubes sealingly extending through and anchored to the door member, and is further provided with ... | 04/29/2003 |
| 6547558 | Methods of making a fuel-fired heating appliance An inner combustion chamber access door member for a fuel-fired water heater has main and pilot burner structures respectively supported thereon by gas supply tubes sealingly extending through and anchored to the door member, and is further provided with ... | 04/15/2003 |
| 6531088 | Automatic door for molten metal holding furnace A door for molten metal holding furnaces which includes a fixed plate with charging and inspection hole provided with two supports positioned at the sides of the charging hole and with two vertical wings positioned on an upper part of the plate and two gu... | 03/11/2003 |
| 6530779 | Door assembly for rotary furnace A rotary furnace includes a drum and a frame supporting the frame for rotation about a nominally horizontal rotational axis. The frame and the drum are supported for pivotal movement about a horizontal pivotal axis. A door supported on the frame normally ... | 03/11/2003 |
| 6435864 | Door assembly for rotary furnace A rotary furnace includes a drum and a frame supporting the frame for rotation about a nominally horizontal rotational axis. The frame and the drum are supported for pivotal movement about a horizontal pivotal axis. A door supported on the frame normally ... | 08/20/2002 |
| 6419482 | Opening and closing apparatus of an opening and closing lid of a box accommodating an object to be processed and a processing system of an object to be processed An opening and closing apparatus (52, 54) opens and closes an opening and closing lid (10) which closes an opening part (4) of an accommodating box (2) for accommodating an object (W) to be processed and is locked by a locking mechanism (12). A key member... | 07/16/2002 |
| 6406662 | Rotary hearth furnace with charge slot air shield An apparatus for charging feed material through an opening into a furnace has a fixed structure and a moveable door. The moveable door together with the fixed structure defines the opening. The moveable door is mounted for movement toward and away from th... | 06/18/2002 |
| 6330754 | Door for ear corn dryer An access door to a pressurized enclosure such as an ear corn dryer swings about an axis of rotation that divides the door into first and second panels. If the door axis of rotation is midway between the door edges, forces on the panels from the pressuriz... | 12/18/2001 |
| 6325621 | Furnace observation apparatus A furnace observation apparatus for observing the state in a high temperature atmosphere furnace, which comprises an optical member to be inserted and disposed in a through-hole formed in a furnace wall of the furnace, made of a material having a softenin... | 12/04/2001 |
