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Seal for a trocar
PATENTS reinforcement (12), while the remaining region (c) of the sealing disc is designed to be elastic. A number of variations are illustrated. Patent number: WO/2011/138107 Inventors: M. Grehn, R. Schröder and F. Hofbauer Publication date: 10 November 2011
Rod seal Applicant: SME, France This invention relates to a triggered-stroke actuator which, for example, is incorporated into a system for protecting pedestrians in the event of frontal impact with a motor vehicle. The rod seal is retained in a pair of half-depth grooves – one in the rod and the other in the housing. This restrains the rod in position until the actuator is triggered; at which point the seal is sheared. Patent number: WO/2011/138553 Inventors: F. Marlin and J.-P. Nadeau Publication date: 10 November 2011
Seal for a trocar Applicant: AB Medica Spa, Italy This invention concerns a sealing device for trocar (a surgical instrument with a three-sided cutting point, used for withdrawing fluid from a body cavity, especially in oedema). It comprises a series of ‘‘rigid’’ elastic conical elements and interspersed soft elastic elements. Patent number: WO/2011/138812 Inventor: F. Orlandi Publication date: 10 November 2011
Method for detecting the tightness of threaded joints in drill rods Applicant: Sandvik Mining and Construction Oy, Finland This invention relates to a method, and an apparatus, for detecting the tightness of threaded joints in drill rods when unfastening at least one threaded joint of the drilling equipment. A vibration signal, measured during impacting, is compared with a model that describes fastened and unfastened states. Patent number: WO/2011/138510 Inventors: T. Pirinen, J. Hakala, A. Klapuri and V. Uitto Publication date: 10 November 2011
Sealing assembly in a thrustbearing kingpin application Applicant: NRB Bearings Ltd, India A kingpin assembly that includes an axially facing lip seal to act as both a grease seal and excluder (to resist the ingress of contaminants) is detailed by this patent. Presumably it is designed for use in off-road or other heavy-duty vehicles, but no application area is mentioned. Patent number: WO/2011/138800 Inventor: S.T. Salunke Publication date: 10 November 2011
Dust seal for a gyratory crusher Applicant: Sandvik Intellectual Property Ab, Sweden This invention relates to a dust seal for a gyratory crusher and a method of fitting this seal in the crusher. The seal bellows is adapted to accommodate a vertical movement of the 14
Sealing Technology
Sealing assembly for a rolling bearing The face seal design described by patent WO/2011/139210 has been developed for use in part of a gyratory crusher.
crusher head of at least 100 mm with no loss of ‘‘dust tightness’’. According to an embodiment, the seal bellows is composed of a sealing layer of natural or synthetic rubber. This makes it possible to achieve a high degree of dust tightness and good flexibility. According to a preferred embodiment, the seal bellows is tangentially stiffened by reinforcing inserts to ensure it is able to withstand the torsional force exerted by the crusher head. The seal slide-ring is made of nylon and does not require any lubrication. Patent number: WO/2011/139210 Inventor: H. Johansson Publication date: 10 November 2011
Device for hermetically sealing large openings in an apparatus Applicant: Andritz Technology and Asset Management GmbH, Austria This patent covers a U-sectioned clamp, or ‘‘strong-back-type’’ device that is restrained by studs welded into a structure. This is used to retain plates that contain a seal in a grove around the periphery and seal an opening in large structures. Patent number: WO/2011/137468 Inventors:Ê°Ê<ii]Ê*°Ê Ài and K. Stanke Publication date: 10 November 2011 Technical Editor’s comment: I am not sure how this is patentable as it appears to me to be typical of standard practice – probably since the nineteenth century – for retaining inspection doors on large items of plant.
Applicant: IMO Holding GmbH, Germany The subject of this patent is a sealing assembly for rolling bearings – especially large inaccessible bearings used in machinery such as a wind turbines. According to the patent, at least two sealing rings are provided and are shown to be working in series. Those illustrated have a U-ring section with a rotary seal geometry on the dynamic lip. Patent number: WO/2011/141125 Inventors: H. Frank, E. Russ and W. Schröppel Publication date: 17 November 2011
Seal arrangement Applicant: Aktiebolaget SKF, Sweden This invention relates to an arrangement for sealing one region of a machine part from another. According to the patent, in order to better protect the seal arrangement against the infiltration of moisture, the seal element and/ or the machine part and/or the component connected to the machine part, is coated by a material that has an omniphobic property. This material is ideally a silane or a trichlorosilane, but preferably an octadecyl trichlorosilane (OTS) or a perfluorooctyl-trichlorosilane (PFOTS). The sealing arrangement also includes a dust-cover lip, which consists of elastomeric or nonwoven material. The surface of the dust-cover lip is coated, at least partially, with a material that has omniphobic and/or hydrophobic properties. This functions as a secondary sealing lip seal and can be made, in particular, of a porous non-woven material whose fibres are coated with a (super) hydrophobic or (super) omniphobic material. One advantage is a reduction in friction of the sealing edge of the seal counter-face, whereby considerably reduced energy consumption and wear of the
May 2012
Rod seal Applicant: SME, France This invention relates to a triggered-stroke actuator which, for example, is incorporated into a system for protecting pedestrians in the event of frontal impact with a motor vehicle. The rod seal is retained in a pair of half-depth grooves – one in the rod and the other in the housing. This restrains the rod in position until the actuator is triggered; at which point the seal is sheared. Patent number: WO/2011/138553 Inventors: F. Marlin and J.-P. Nadeau Publication date: 10 November 2011
Seal for a trocar Applicant: AB Medica Spa, Italy This invention concerns a sealing device for trocar (a surgical instrument with a three-sided cutting point, used for withdrawing fluid from a body cavity, especially in oedema). It comprises a series of ‘‘rigid’’ elastic conical elements and interspersed soft elastic elements. Patent number: WO/2011/138812 Inventor: F. Orlandi Publication date: 10 November 2011
Method for detecting the tightness of threaded joints in drill rods Applicant: Sandvik Mining and Construction Oy, Finland This invention relates to a method, and an apparatus, for detecting the tightness of threaded joints in drill rods when unfastening at least one threaded joint of the drilling equipment. A vibration signal, measured during impacting, is compared with a model that describes fastened and unfastened states. Patent number: WO/2011/138510 Inventors: T. Pirinen, J. Hakala, A. Klapuri and V. Uitto Publication date: 10 November 2011
Sealing assembly in a thrustbearing kingpin application Applicant: NRB Bearings Ltd, India A kingpin assembly that includes an axially facing lip seal to act as both a grease seal and excluder (to resist the ingress of contaminants) is detailed by this patent. Presumably it is designed for use in off-road or other heavy-duty vehicles, but no application area is mentioned. Patent number: WO/2011/138800 Inventor: S.T. Salunke Publication date: 10 November 2011
Dust seal for a gyratory crusher Applicant: Sandvik Intellectual Property Ab, Sweden This invention relates to a dust seal for a gyratory crusher and a method of fitting this seal in the crusher. The seal bellows is adapted to accommodate a vertical movement of the 14
Sealing Technology
Sealing assembly for a rolling bearing The face seal design described by patent WO/2011/139210 has been developed for use in part of a gyratory crusher.
crusher head of at least 100 mm with no loss of ‘‘dust tightness’’. According to an embodiment, the seal bellows is composed of a sealing layer of natural or synthetic rubber. This makes it possible to achieve a high degree of dust tightness and good flexibility. According to a preferred embodiment, the seal bellows is tangentially stiffened by reinforcing inserts to ensure it is able to withstand the torsional force exerted by the crusher head. The seal slide-ring is made of nylon and does not require any lubrication. Patent number: WO/2011/139210 Inventor: H. Johansson Publication date: 10 November 2011
Device for hermetically sealing large openings in an apparatus Applicant: Andritz Technology and Asset Management GmbH, Austria This patent covers a U-sectioned clamp, or ‘‘strong-back-type’’ device that is restrained by studs welded into a structure. This is used to retain plates that contain a seal in a grove around the periphery and seal an opening in large structures. Patent number: WO/2011/137468 Inventors:Ê°Ê<ii]Ê*°Ê Ài and K. Stanke Publication date: 10 November 2011 Technical Editor’s comment: I am not sure how this is patentable as it appears to me to be typical of standard practice – probably since the nineteenth century – for retaining inspection doors on large items of plant.
Applicant: IMO Holding GmbH, Germany The subject of this patent is a sealing assembly for rolling bearings – especially large inaccessible bearings used in machinery such as a wind turbines. According to the patent, at least two sealing rings are provided and are shown to be working in series. Those illustrated have a U-ring section with a rotary seal geometry on the dynamic lip. Patent number: WO/2011/141125 Inventors: H. Frank, E. Russ and W. Schröppel Publication date: 17 November 2011
Seal arrangement Applicant: Aktiebolaget SKF, Sweden This invention relates to an arrangement for sealing one region of a machine part from another. According to the patent, in order to better protect the seal arrangement against the infiltration of moisture, the seal element and/ or the machine part and/or the component connected to the machine part, is coated by a material that has an omniphobic property. This material is ideally a silane or a trichlorosilane, but preferably an octadecyl trichlorosilane (OTS) or a perfluorooctyl-trichlorosilane (PFOTS). The sealing arrangement also includes a dust-cover lip, which consists of elastomeric or nonwoven material. The surface of the dust-cover lip is coated, at least partially, with a material that has omniphobic and/or hydrophobic properties. This functions as a secondary sealing lip seal and can be made, in particular, of a porous non-woven material whose fibres are coated with a (super) hydrophobic or (super) omniphobic material. One advantage is a reduction in friction of the sealing edge of the seal counter-face, whereby considerably reduced energy consumption and wear of the
May 2012