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6283477 |
Annular chamber seal
Internal and external metal-to-metal radially interfering seals are provided for an annular chamber. Typically, an annular chamber is used in tubular goods to be part of the hydraulic control...
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6273427 |
Refrigeration sealing system for a refrigeration unit
A refrigeration sealing system for a refrigeration unit includes a trap-process tube coupled with and in communication with a compressor of the refrigeration unit for receiving refrigerant from a...
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6273644 |
High pressure live service pipe renewal apparatus and method
An apparatus and method for inserting a new service pipe into an existing high pressure service pipe that contains a leak, without the necessity of excavation or separately shutting off the supply...
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6264203 |
Methods and apparatus for repairing a cracked jet pump riser in a boiling water reactor utilizing a spacer camp
A method for repairing cracked jet pump riser assemblies in a boiling water reactor utilizes a spacer clamp and a seal collar. The spacer clamp is secured to the riser assembly to limit horizontal...
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6206376 |
Apparatus and method of sealing a valve against increasing fluid pressure
A double lobed seal comprises first and second annular seals, each having a radially inwardly projecting annular lobe that engages against a sealing surface of a valve element in a valve housing to...
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6203023 |
Cable inlet
For a sealing insert of a cable gland it is proposed that the sealing insert be provided with a peripheral step which is adapted to a peripheral step in the pressure screw and that the sealing...
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6152494 |
Pipe gasket with combined lip and compression seal geometries
A pipe sealing gasket is shown which is designed to be received within a groove provided within a socket end of a thermoplastic pipe. The gasket includes a ring shaped body which, when viewed in...
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6145888 |
Pipe joint with inspection window
A pipe joint comprises a pair of tubular joint members made of a metal and each having an abutting end face, an annular gasket made of a metal and interposed between the abutting end faces of the...
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6123336 |
Sealing device and method of sealing
A sealing device (20) includes a layer of sealant (22) for sealing an internal surface (30) of a hollow member (34). The internal surface is nonparallel to the open end of the hollow member, and...
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6122870 |
Stack ban
A stack ban for sealing a pipe and boot extending from a roof of a building is disclosed. The stack ban includes a band of flexible material having a smooth inner surface and an outer surface. The...
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6117265 |
Method and apparatus for heat-welding lengths of profiles for sealing gaskets
A method and apparatus for heat-welding corners lengths of profiles together, for sealing gaskets, where the profiles include at least one extendible or compressible air chamber and are cut at...
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6056291 |
Metal gasket
A metal gasket excellent in sealing performance and capable of sealing with a small pressing force. The metal gasket comprises at least one metal sheath with C-shaped cross-section and a ring...
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6039319 |
Hygienic fitting with thermal expansion area for gasket
A sealing gasket for insertion into a circumferentially continuous groove of a flange joint for joining axially aligned tube ends, the flange joint being of the type having axially opposed flanges...
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5979902 |
Cavity sealing article and method
A cavity sealing article for use in a longitudinally extending cavity defined by cavity walls, the cavity having a cross-section within the cavity walls which is to be sealed at a predetermined...
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5971399 |
Dual density sanitary pipe gasket
A sanitary-pipe gasket includes an annular disk portion of predetermined thickness, and a projecting portion which is provided concentrically with the annular disk portion on each of the upper and...
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5955162 |
Calcium alumina cement lined pipe
Cast iron pipe and other elongated hollow articles are lined with a cementitious mortar for certain applications, such as the transmission of potable water or sewage. To improve the resistance to...
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5951019 |
Method of forming a metal-to-metal seal in high pressure applications with low contact stress
A method of forming a metal-to-metal seal in high pressure applications with low contact stress. Firstly, providing a first elongate pressure containment member having a surface of revolution....
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5944319 |
Method of forming a metal to metal seal between two confronting faces of pressure containing bodies and a metal to metal seal
A metal to metal seal and a method of forming the same includes providing a pair of opposed clamping faces. Each of the clamping faces surround apertures. Seal grooves serve to widen each of the...
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5938246 |
Increased pressure fluid carrying pipeline system and method therefor
A method of maximizing system operating pressure capability of a selected flange joint in a fluid carrying pipeline system comprises minimizing bold load operating conditions and bolt load pre-load...
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5921284 |
Shrink-type wall feedthrough fitting
A wall feedthrough fitting for a conduit has a guide tube centered on an axis, adapted to be mounted in a wall with the conduit passing axially through the tube, and having an outer end of a...
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5884917 |
Thermal processing apparatus
Annular groove portions are formed in each of facing surfaces of a sealing portion of a processing vessel that is kept in an atmosphere of a prescribed gas or an atmosphere at a reduced pressure,...
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5826886 |
Wall feedthrough fitting
An anchored guide tube centered on an axis and a conduit passing axially through the tube are relatively sealed by a feedthrough fitting having a flexible and shrinkable sleeve having an inner...
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5820129 |
Mechanical split double seals
Split mechanical seal assemblies which include a pressurized fluid barrier and multiple concentric and axially aligned stationary seal rings. The stationary seal rings are in sealing relation with...
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5809098 |
Method for sealing a stub tube in a nuclear reactor
Methods for sealing cracks adjacent stub tube attachment welds in a reactor pressure vessel of a nuclear reactor are described. The reactor pressure vessel includes at least one stub tube through...
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5806856 |
On-site fillable liquid magnetic seal
An on-site fillable ferrofluidic seal comprises a ferrofluidic seal having at least one ferrofluid conducting channel extending through either the magnet, through one of the pole pieces which...
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5797603 |
Sealing ring and a method of mounting it
The present invention relates mainly to a sealing ring and to a method of mounting it in a groove. According to the present invention, the sealing ring is twisted before being mounted in the groove...
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5775830 |
Watertight connector casing
Disclosed is a connector casing made watertight by the addition of a seal. It is made up of a first casing element (1) mating with a second casing element (2). The first casing element is designed...
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5775702 |
Sealing arrangement
A sealing apparatus for sealing an end of an enclosure having an opening for passing an elongate object, such as a cable, therethrough is disclosed. The sealing apparatus includes a sealing device...
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5777274 |
Grommet having an identifying portion for checking the grommet
A grommet 11 includes a vehicle body mount portion 11a to be mounted on a panel of a vehicle body and a wire insertion portion 11b to be mounted on a wiring harness. A checking projection 11c is...
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5765835 |
Waveguide seal assembly
A waveguide seal assembly for a waveguide joint is fabricated in separate parts, including a relatively small inner conductive part for surrounding the coupled waveguide openings in the joined...
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5738357 |
Seal for enhancing pipes
A method is provided for replacing an existing service pipe carrying fluid to an outlet within a property with a replacement service pipe. In the method the outlet is disconnected within the...
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5737800 |
Hot water bushing
A bushing for a hot water tank to connect a temperature sensing probe of a temperature controller device to the tank wall with the temperature controller device extending into the tank. The bushing...
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5713582 |
Seal retainer
A sealing assembly is disclosed for creating a seal between first and second mating members or components. The sealing assembly basically includes a seal retainer with one or more annular seals...
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5628517 |
Contracting/expanding self-sealing cryogenic tube seals
Contracting/expanding self-sealing cryogenic tube seals are disclosed which use the different properties of thermal contraction and expansion of selected dissimilar materials in accord with certain...
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5603508 |
Gasket for lateral outlet segmented pipe coupling
A sealing gasket for a segmented pipe coupling includes radially extending, axially spaced sealing lips interconnected by an axially extending bridge member which has at least one aperture...
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5584488 |
Seal
A seal is provided for a connector which must be reliably sealed in applications where the connection is made and undone as part of the normal use of the connector. The seal is particularly well...
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5564756 |
Duct coupling pad for joining flexible ducts
A duct coupling pad for joining flexible ducts includes an outer section surrounding a central opening. An adhesive coating is applied to one surface of the coupling pad for adhering the pad to a...
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5560618 |
Technique for sealing
A method of sealing a duct having a non-uniform cross-section which comprises: (i) positioning within the duct a device for locating a sealing material at a localized portion of an inner surface...
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5551706 |
Composite gasket for sealing flanges and method for making and using same
Improved gasket material and method for use in sealing various flanged apparatus, such as found in distillation columns, glass lined vessels and transformer radiator flange seals. The gasket...
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5511573 |
Contaminated valve containment device
A contaminated valve containment device is provided which includes a leak-proof housing that is attachable to a leaking pipe member to prevent migration of contaminants to the environment. Disposed...
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5499823 |
Grommet with filler inlet opening
A grommet including a hollow shell, a hollow retaining section, and a hollow member, the shell having a shell opening at a first end and a reduced diameter opening at a second end, and in...
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5492336 |
O-ring gasket material and method for making and using same
Improved O-ring gasket material and method for use in sealing various apparatus, such as fluid conduits for heat exchange apparatus, is provided. The gasket material comprises a cylindrical core of...
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5348310 |
Double spiral-wound gasket assembly with leak detection
A gasket assembly with double spiral-wound gaskets and a middle draw-off port for leak detection in service with a process fluid featuring 1) an inner primary seal spiral-wound gasket with a high...
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5249811 |
Refractory joint packing for an annular gap in a metallurgical vessel
An annular space is formed between the opening of a refractory lining in a metallurgical vessel and a shaped element to be joined to the refractory lining in the opening. A joint packing is...
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5226683 |
Reusable metallic seal using memory metal
A metallic seal having a continuous annulus of Nitinol that is compressed between two seal faces and conforms to the minute irregularities of the seal faces to prevent leakage of fluid through...
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5213339 |
Pipe joint gasket
A method for assembling a pipe joint including an inner pipe having an outside surface and an outer pipe having an annular groove for receiving a gasket and a pipe joint gasket used in that method....
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5201835 |
Wellhead seal with protective rib
A seal member that locates between inner and outer tubular members has ribs for reducing the amount of sliding contact. The seal member is U-shaped, having inner and outer walls connected on one...
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RE34144 |
Metal gasket having conical and radial sealing surfaces and method of using the gasket with a tubular element
A metal gasket for a face-seal fitting has an outer section in the form of a circular annulus, an inner section in the form of a circular annulus and having a shorter axial dimension than the outer...
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5143381 |
Pipe joint seal
An improved sliding pipe joint seal for use in sealing an annular space created between a sealing surface of a spigot at an end of a length of pipe and a sealing surface of a bell shaped end of...
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5114158 |
Packing assembly for oilfield equipment and method
An improved packing assembly is provided for forming a metal-to-metal sealing engagement between an outer cylindrical surface and an inner cylindrical surface within downhole or surface hydrocarbon...
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