Bizarre Patents
Pizza Pie With Concentric Rings of Crust
A pizza mold for forming a plurality of concentric raised ridges of dough (i.e., crust) on the surface of a pizza pie.
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| Number | Title | Issue Date |
| 7374211 | Rotary joints Rotary joints are provided, to allow fluid to flow from a stationary member to a rotating member. The rotary joints include a housing, configured to fit over the rotating member, a rotatable coupling disposed within the housing, configured to be fixedly attached to ... | 05/20/2008 |
| 7150477 | Rotary joints Rotary joints are provided, to allow fluid to flow from a stationary member to a rotating member. The rotary joints include a housing, configured to fit over the rotating member, a rotatable coupling disposed within the housing, configured to be fixedly attached to ... | 12/19/2006 |
| 6916023 | Self-adjusting cartridge seal A seal includes a first seal retainer, a seal holder and a second seal retainer. A somewhat cup-shaped recess of the first seal retainer opens in a first direction of motion of a movable member against which the seal is to seal. The seal holder includes a first some... | 07/12/2005 |
| 6871857 | Mechanical sealing apparatus Disclosed herein is a mechanical sealing device for preventing fluid leakage. The sealing device has a sealing chamber formed by a flange, a seal casing and a seal cover at a position outside a gland ring. This gland ring is used for holding the gland packings insta... | 03/29/2005 |
| 6439302 | Stripper packer A stripper packer includes a main body having a first end and a second end. A passage extends through the main body from the first end to the second end, thereby facilitating the passage of coiled tubing through the main body when the coiled tubing is bei... | 08/27/2002 |
| 6412783 | Self aligning stuffing box for pumpjacks A self aligning stuffing box for pump jacks includes a first tubular body having an interior bore with internal stops. A second tubular body has a first end with a concave contact surface. The second tubular body is telescopically received within the firs... | 07/02/2002 |
| 5873575 | Fluid cooled packing case member for compressors and other machinery A packing case member or packing cup for use in a package of other similar cups for mounting on a reciprocally or rotatably movable machinery shaft to prevent gas leakage along the shaft is disclosed. The member includes a circular central opening for the... | 02/23/1999 |
| 5755372 | Self monitoring oil pump seal A seal system for an oil well head, wherein the shaft rotates about its axis to drive a progressive cavity type pump. Primary and secondary polytetrafluoroethylene seals surround a sleeve that encircles the shaft. Pressure detectors connect to the space b... | 05/26/1998 |
| 5356157 | Internal live loading packing gland Live loading is applied on each end of both the secondary and the primary packing of a packing gland. After installing the primary packing assembly and a lantern ring, the primary packing is compressed to proper specifications. While the primary gland is ... | 10/18/1994 |
| 5290046 | Internal live loading packing gland Live loading is applied on each end of both the secondary and the primary packing of a packing gland. After installing the primary packing assembly and a lantern ring, the primary packing is compressed to proper specifications. While the primary gland is ... | 03/01/1994 |
| 4917190 | Oil well blowout containment system An oil well blowout containment system which surrounds the polished rod is provided that will capture the oil leaking and blowing past the stuffing box packing gland. In addition, a vessel which is part of the oil well blowout containment system and is lo... | 04/17/1990 |
| 4834394 | Sealed universal movement of a shaft extending between environments Apparatus includes a mounting member having a bore which closely receives the shaft and a counterbore in which two elastic O-rings separated by an annular element are received. A first compression member threadably engages the mounting member to apply axi... | 05/30/1989 |
| 4811958 | Sealed shafts moveable in vacuum chambers by exercising control from outside A sealed shaft for use in an evacuated chamber in which the shaft can be moved by control from outside the chamber while maintaining the seal around the shaft.... | 03/14/1989 |
| 4765631 | Stuffing box sealing arrangement A stuffing box sealing arrangement for sealing a rotary shaft which extends into a pressure space includes two separate consecutive pressure chambers arranged at axially spaced locations along the shaft and an intervening space sealed with respect to the ... | 08/23/1988 |
| 4703835 | Hoisting apparatus A hoisting apparatus comprising a hydraulic cylinder (1) a piston (3) whereof is connected to a load-handling attachment via a pliable member (6) which passes through a sealing device (9) that is located outside the cylinder (1) and consists of two consec... | 11/03/1987 |
| 4623152 | Shaft seal arrangement with split housing An improvement for a stuffing box for sealing a shaft, such as a valve stem, in a first housing, such as a valve body, where the shaft extends through the housing and original seal devices are provided in an annular chamber or packing gland between the ho... | 11/18/1986 |
| 4560176 | Inverted cone stuffing box A stuffing box for use in oil and gas wells having improved sealing. A plurality of ring-like packing glands each has an outer surface defining an inverted frusto-conical shape and a bore therethrough also defining an internal inverted frusto-conical surf... | 12/24/1985 |
| 4383768 | Stirring apparatus In a stirring apparatus for sealed mounting on a vessel, in which apparatus a distance between a mounting flange (15) and drive elements of the stirring shaft (2) is bridged by a load-bearing intermediate housing (also called a lantern) (1+7, 50), at leas... | 05/17/1983 |
| 4363465 | Extreme temperature, high pressure balanced, rising stem gate valve with super preloaded, stacked, solid lubricated, metal-to-metal seal A balanced high pressure rising stem gate valve has lubricated metal-to-metal seal means between the bonnet part of the valve body and the valve actuating stem and between the chamber part of the valve body and the balancing stem. Each seal means includes... | 12/14/1982 |
| 4360186 | Swivel joint A Swivel Joint for use on producing wells which are being pumped, having an upper and a lower annular member, in juxtaposition, with a coil spring separating the members, the lower member having a curved external face to receive, in line contact, the insi... | 11/23/1982 |
| 4340204 | High pressure gate valve with preloaded, stacked, solid lubricated stem seals A high pressure gate valve having at least one pressure actuated seal means between the bonnet part of the valve body and the valve actuating stem and between the chamber part of the valve body and the valve actuating stem is disclosed. Each seal means in... | 07/20/1982 |
| 4286791 | Packing assembly for a movable shaft A gland body is coupled at its proximal end to a supporting housing by means of a union. A first packing chamber, for a static shutdown packing, is formed at the proximal end of the gland body, with a wedge ring forming the base of the chamber. The wedge ... | 09/01/1981 |
| 4192517 | Anti-scale stuffing box improvement Buildup of scale on polished rods extending above certain stuffing boxes on wells producing relatively large amounts of brine incidental to oil production in arid regions is prevented by employing a rigid upper wiper ring in combination with a lower retai... | 03/11/1980 |
| 4094195 | Novel seal and apparatus including same An automatic liquid sample-injecting apparatus using a conduit such as a hypodermic needle or pipette to suck liquid from a sample source and transfer it to an injector valve apparatus. The apparatus utilizes the optimum embodiment of the apparatus being ... | 06/13/1978 |
| 4093239 | Piston rod sealing arrangement for a stirling engine A sealing arrangement for the light working gases of a Stirling engine comprises, surrounding the piston rod below the cylinder chamber, a block seal portion and a liquid seal portion, the latter including an oil scraping middle unit, a liquid chamber, an... | 06/06/1978 |
| 3955822 | Rod pump stuffing box control system A system for maintaining a constant biasing pressure upon the sealing members of a rod pump stuffing box utilizes a hydraulic system under a constant preset pressure to bias the seal member into sealing engagement against the pump polished rod. Means are ... | 05/11/1976 |
