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Mechanical seal
PATENTS try, such as sealing window frame members, sealing retrofit and replacement windows, as well as indoor applications, such as sealing bathtubs, sinks and shower surrounds. It is also useful for sealing components on, and areas of, a boat hull. Patent number: WO/2010/096412 Inventors: L. Carbary, A. Jaszenovics, H. Mahmoud and F. Oseguera Publication date: 26 August 2010
Seals for a ram assembly Applicant: Stolle Machinery Co Llc, USA Seals for a ram assembly that is used in the manufacture of cans is detailed by this patent. It appears to be an operation with a relatively short stroke. The seals, and the male and female energisers, have a split body. This enables the ram to remain in place during seal replacement. Once in place, the ends of the split seal are joined at an interface. The retaining/compression device squeezes together the seals so that the interface is sealed. The seals illustrated for this design are sets of back-to-back V-rings, with a feed to the interspace. Patent number: WO/2010/096644 Inventor: R.A. Blue Publication date: 26 August 2010
Retractable safety syringe with compressible gasket Applicant: Global Medisafe Holdings Ltd, Australia This seal is designed to be compressible under an additional load. In a first downward stroke under normal load (without an additional load being applied), the plunger does not engage the needle assembly, so that fluid is then drawn into the barrel of the syringe by a first upstroke. In a second downward stroke, after the injection has been completed, an additional load is applied to the plunger to compress the seal so that the end of the plunger travels further to engage the needle assembly for subsequent retraction of the needle assembly on a second upstroke. By using this approach the needle is caused to retract into the barrel of the syringe upon completion of injection. The compressible seal is provided with internal ribs so that it is self-supporting under a normal load. Patent number: WO/2010/096879 Inventor: A. Walsh Publication date: 2 September 2010
forms a sacrificial anode is provided on a surface region of the slide and/or counter ring. This region lies outside the sliding surface. Patent number: WO/2010/097062 Inventor: L. Pelsoeczy Publication date: 2 September 2010
Mechanical seal Applicant: Grundfos Management A/s, Denmark A mechanical seal is described. According to the patent, at least one sealing element comprises a sealing surface that is formed from a carrier-layer structure (on the surface) to which a diamond coating is applied. The method for producing the seal is covered. Patent number: WO/2010/097148 Inventors: H. Grann, R. Højsholt and J.F. Nielsen Publication date: 2 September 2010
Form-in-place gaskets Applicant: 3M Innovative Properties Co, USA This disclosure relates to form-in-place gaskets that are applied to surfaces of containers for sensitive electronic components. The gaskets include a flexible polymer and a micro-powder polyolefin filler. Patent number: WO/2010/098991 Inventors: S.B. Charles, M.A. Kropp and A.N. Mujumdar Publication date: 2 September 2010
Improved air-riding seal system Applicant: Stein Seal Co, USA An improved air-riding seal system (1) for turbine engines is detailed by this patent. The
primary seal assembly (2) includes an annular seal ring (23) and an arcuate support arm (25). The annular seal ring (23) has a cross-section that is substantially L-shaped, and a surface with a step face (4) and a circumferential dam (3). The arcuate support arm (25) has a tooth (27) at one end, adjacent to an outermost circumferential surface (26) along the seal runner (19), which could include an optional notch. The tooth (27) and outermost circumferential surface (26) are separated by a gap (28). A plurality of radial dams (35) disposed along the surface, in an outward radial arrangement from the circumferential dam (3), are provided to improve the stiffness of the thin film. The system provides positive sealing, which is durable, predictable and uniform over the service life of the seal. The invention minimises leakage and improves the secondary air-flow characteristics of gas turbine engines. Patent number: WO/2010/099193 Inventor: G.M. Garrison Publication date: 2 September 2010
Wedge seal for an injection moulding nozzle Applicant: Mold-Masters (2007) Ltd, Canada A seal for an injection moulding nozzle is described. A seal piece that has a wedge or wedge-like portion is disposed between the nozzle tip and the mould component. The pressure of the moulding material, acting on a surface of the wedge portion, forces it into the converging gap. Patent number: WO/2010/099602 Inventors: H. Kaushal and D. Ursu Publication date: 10 September 2010
Running gear seal Applicant: Federal-Mogul Burscheid GmbH, Germany This invention relates to a duo cone-type face seal. According to the patent, a coating that
January 2011
Patent WO/2010/099193 provides details of an air-riding seal design that improves the stiffness of the film to provide stable operation under a wide range of operating conditions.
Sealing Technology
13
Seals for a ram assembly Applicant: Stolle Machinery Co Llc, USA Seals for a ram assembly that is used in the manufacture of cans is detailed by this patent. It appears to be an operation with a relatively short stroke. The seals, and the male and female energisers, have a split body. This enables the ram to remain in place during seal replacement. Once in place, the ends of the split seal are joined at an interface. The retaining/compression device squeezes together the seals so that the interface is sealed. The seals illustrated for this design are sets of back-to-back V-rings, with a feed to the interspace. Patent number: WO/2010/096644 Inventor: R.A. Blue Publication date: 26 August 2010
Retractable safety syringe with compressible gasket Applicant: Global Medisafe Holdings Ltd, Australia This seal is designed to be compressible under an additional load. In a first downward stroke under normal load (without an additional load being applied), the plunger does not engage the needle assembly, so that fluid is then drawn into the barrel of the syringe by a first upstroke. In a second downward stroke, after the injection has been completed, an additional load is applied to the plunger to compress the seal so that the end of the plunger travels further to engage the needle assembly for subsequent retraction of the needle assembly on a second upstroke. By using this approach the needle is caused to retract into the barrel of the syringe upon completion of injection. The compressible seal is provided with internal ribs so that it is self-supporting under a normal load. Patent number: WO/2010/096879 Inventor: A. Walsh Publication date: 2 September 2010
forms a sacrificial anode is provided on a surface region of the slide and/or counter ring. This region lies outside the sliding surface. Patent number: WO/2010/097062 Inventor: L. Pelsoeczy Publication date: 2 September 2010
Mechanical seal Applicant: Grundfos Management A/s, Denmark A mechanical seal is described. According to the patent, at least one sealing element comprises a sealing surface that is formed from a carrier-layer structure (on the surface) to which a diamond coating is applied. The method for producing the seal is covered. Patent number: WO/2010/097148 Inventors: H. Grann, R. Højsholt and J.F. Nielsen Publication date: 2 September 2010
Form-in-place gaskets Applicant: 3M Innovative Properties Co, USA This disclosure relates to form-in-place gaskets that are applied to surfaces of containers for sensitive electronic components. The gaskets include a flexible polymer and a micro-powder polyolefin filler. Patent number: WO/2010/098991 Inventors: S.B. Charles, M.A. Kropp and A.N. Mujumdar Publication date: 2 September 2010
Improved air-riding seal system Applicant: Stein Seal Co, USA An improved air-riding seal system (1) for turbine engines is detailed by this patent. The
primary seal assembly (2) includes an annular seal ring (23) and an arcuate support arm (25). The annular seal ring (23) has a cross-section that is substantially L-shaped, and a surface with a step face (4) and a circumferential dam (3). The arcuate support arm (25) has a tooth (27) at one end, adjacent to an outermost circumferential surface (26) along the seal runner (19), which could include an optional notch. The tooth (27) and outermost circumferential surface (26) are separated by a gap (28). A plurality of radial dams (35) disposed along the surface, in an outward radial arrangement from the circumferential dam (3), are provided to improve the stiffness of the thin film. The system provides positive sealing, which is durable, predictable and uniform over the service life of the seal. The invention minimises leakage and improves the secondary air-flow characteristics of gas turbine engines. Patent number: WO/2010/099193 Inventor: G.M. Garrison Publication date: 2 September 2010
Wedge seal for an injection moulding nozzle Applicant: Mold-Masters (2007) Ltd, Canada A seal for an injection moulding nozzle is described. A seal piece that has a wedge or wedge-like portion is disposed between the nozzle tip and the mould component. The pressure of the moulding material, acting on a surface of the wedge portion, forces it into the converging gap. Patent number: WO/2010/099602 Inventors: H. Kaushal and D. Ursu Publication date: 10 September 2010
Running gear seal Applicant: Federal-Mogul Burscheid GmbH, Germany This invention relates to a duo cone-type face seal. According to the patent, a coating that
January 2011
Patent WO/2010/099193 provides details of an air-riding seal design that improves the stiffness of the film to provide stable operation under a wide range of operating conditions.
Sealing Technology
13