Abstract:
A connector assembly for coupling a corrosive gas supply pipe with a glass tube in an apparatus for fabricating an optical fiber preform using vapor deposition is disclosed. The connector assembly includes a first connector formed on an inner periphery thereof with a threaded portion, a second connector having a stepped surface on an inner surface and formed on an outer periphery with a threaded portion threadedly engaged with the first connector, an O-ring installed in the first connector and in close contact with the stepped surface when the second connector is threadedly engaged with the first connector, and resilient means for urging the O-ring against the stepped surface. The connector assembly consistently applies a resilient force to the O-ring functioning as a seal between the first and second connectors. For a long-running operation, even though the O-ring is cured, the fitting maintains a consistent sealing state to prevent metal material from being oxidized by the corrosive gas. As a result, fine oxidized metal particulars do not infiltrate into the gas supply pipe to prevent the optical fiber preform from deteriorating.
Abstract:
A ramp-lock quick-connect fitting is adapted to be placed between conventional type fittings on pipes and tubes, such as quartz pipes and synthetic resin tubes used in chemical processing systems for semiconductor device fabrication. The quick-connect fitting includes a first coupling member having a pipe receiving section adapted to receive a conventional fitting on a pipe, and a ramp support section with a pair of spiral ramps formed therearound. The quick-connect fitting also includes a second coupling member that sealingly engages the first coupling member. An extension portion of the second coupling member is adapted to receive a conventional fitting on a tube. A locking collar is movably engaged with the second coupling member and has a pair of lock members disposed on an interior surface of the collar that slidably engage with the spiral ramps when the collar is rotated around the ramp support section of the first coupling member.
Abstract:
A ramp-lock quick-connect fitting is adapted to be placed between conventional type fittings on pipes and tubes, such as quartz pipes and synthetic resin tubes used in chemical processing systems for semiconductor device fabrication. The quick-connect fitting includes a first coupling member having a pipe receiving section adapted to receive a conventional fitting on a pipe, and a ramp support section with a pair of spiral ramps formed therearound. The quick-connect fitting also includes a second coupling member that sealingly engages the first coupling member. An extension portion of the second coupling member is adapted to receive a conventional fitting on a tube. A locking collar is movably engaged with the second coupling member and has a pair of lock members disposed on an interior surface of the collar that slidably engage with the spiral ramps when the collar is rotated around the ramp support section of the first coupling member.
Abstract:
A ramp-lock quick-connect fitting is adapted to be placed between conventional type fittings on pipes and tubes, such as quartz pipes and synthetic resin tubes used in chemical processing systems for semiconductor device fabrication. The quick-connect fitting includes a first coupling member having a pipe receiving section adapted to receive a conventional fitting on a pipe, and a ramp support section with a pair of spiral ramps formed therearound. The quick-connect fitting also includes a second coupling member that sealingly engages the first coupling member. An extension portion of the second coupling member is adapted to receive a conventional fitting on a tube. A locking collar is movably engaged with the second coupling member and has a pair of lock members disposed on an interior surface of the collar that slidably engage with the spiral ramps when the collar is rotated around the ramp support section of the first coupling member.
Abstract:
A rotary sealing device for connecting a fixed gas supply pipe to a tube rotating about its axis. It comprises a first rotary member for receiving the fixed pipe, a second rotary member for receiving and sealing the rotary pipe and fixed to the first member, and a filter placed in a chamber made in the aforementioned members and forming an obstacle to the gas flow and consequently to an overpressure of said gas, opposing the entry into the said chamber of gas coming from outside the device.
Abstract:
A device for connecting tubular elements, especially fragile elements such as glass tubes, utilizing two interconnected half collars that permit relative rotation. An elastic and chemically inert joint comprising an elastomer core and an envelope of polytetrafluoroethylene is positioned between the tubular elements. The half collars may be interconnected by a male-female arrangement on bosses and a ferrule.
Abstract:
A tube coupling for coupling tubes capable of carrying corrosive fluids, the tube coupling employing an outer body of relatively rigid, high strength material, an inner tubular member of a resiliently deformable, generally inert, corrosion resistant material such as a fluorocarbon resin received within the outer body and having a bore for receiving a tube therein, an annulus of elastomeric material having a first portion placed around the inner tubular member adjacent an end thereof and a second portion extending beyond the end of the inner tubular member, the annulus retaining the inner tubular member within the outer body against inadvertent removal therefrom, a nut threaded onto the outer body and means coupling the nut and the annulus such that upon threading the nut along the outer body the coupling means will axially contract the annulus to radially contract the inside diameter of the first portion of the annulus and thereby deform the inner tubular member radially inwardly to grip the tube therein and establish a seal between the inner tubular member and the tube therein and to radially contract the inside diameter of the second portion of the annulus and thereby grip the tube therein in response to axial movement of the threaded member.
Abstract:
A joint construction for joining juxtaposed tubular ends of glass tubing, laboratory glassware, and the like which comprises a peripheral flange formed on each of the tube ends to be joined, a sealing sleeve in sealing engagement with the outside surfaces of the tube ends and disposed between the inside faces of the flanges, and male and female slotted and threaded coupling elements which thread together over the sleeve and seat upon the exterior faces of the flanges.