Patents by Inventor Mieczyslaw Rataj
Mieczyslaw Rataj has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11933175Abstract: A rock bolt for installation within a bore formed in rock strata having an elongate shaft with the leading end for installation into the bore and a trailing end projecting from an open end of the bore. A locking nut is threadably attached to the trailing end and is arranged to display product information and the like at a display face. The display face is recessed axially into the nut to provide protection against damage to the display face that may otherwise render the information unreadable.Type: GrantFiled: July 25, 2022Date of Patent: March 19, 2024Assignee: Sandvik Mining and Construction Tools ABInventors: Mieczyslaw Rataj, Steven Weaver, Bradley Darlington, Peter Young, Warren Roach
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Publication number: 20220389816Abstract: A rotation indication device for a rock bolt including a central rod with a threaded trailing portion. The rotation indication device includes a blind nut having a threaded central recess for engaging the threaded trailing portion and a visual indication means provided at a bottom portion of the central recess and configured such that upon movement of the threaded trailing portion of the central rod into the bottom portion of the central recess, the central rod forces at least a portion of the visual indication means to move through a passage in the blind nut between the bottom portion of the central recess and the outside of the blind nut.Type: ApplicationFiled: October 26, 2020Publication date: December 8, 2022Inventors: Steven WEAVER, Mieczyslaw RATAJ, Osvaldo VALLATI
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Publication number: 20220356804Abstract: A rock bolt for installation within a bore formed in rock strata having an elongate shaft with the leading end for installation into the bore and a trailing end projecting from an open end of the bore. A locking nut is threadably attached to the trailing end and is arranged to display product information and the like at a display face. The display face is recessed axially into the nut to provide protection against damage to the display face that may otherwise render the information unreadable.Type: ApplicationFiled: July 25, 2022Publication date: November 10, 2022Inventors: Mieczyslaw RATAJ, Steven WEAVER, Bradley DARLINGTON, Peter YOUNG, Warren ROACH
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Patent number: 11428102Abstract: A rock bolt arranged for installation within a bore formed in rock strata includes an elongate shaft with the leading end for installation into the bore and a trailing end projecting from an open end of the bore. A locking nut is threadably attached to the trailing end and is arranged to display product information and the like at a display face. The display face is recessed axially into the nut to provide protection against damage to the display face that may otherwise render the information unreadable.Type: GrantFiled: August 20, 2019Date of Patent: August 30, 2022Assignees: Sandvik Mining and Construction Australia (Production/Supply) Pty Ltd, Sandvik Minina and Construction Tools ABInventors: Mieczyslaw Rataj, Steven Weaver, Bradley Darlington, Peter Young, Warren Roach
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Publication number: 20210172318Abstract: A rock bolt arranged for installation within a bore formed in rock strata includes an elongate shaft with the leading end for installation into the bore and a trailing end projecting from an open end of the bore. A locking nut is threadably attached to the trailing end and is arranged to display product information and the like at a display face. The display face is recessed axially into the nut to provide protection against damage to the display face that may otherwise render the information unreadable.Type: ApplicationFiled: August 20, 2019Publication date: June 10, 2021Inventors: Mieczyslaw RATAJ, Steven WEAVER, Bradley DARLINGTON, Peter YOUNG, Warren ROACH
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Patent number: 11028692Abstract: A rock bolt and meshing assembly is arranged for installation of a meshing sheet against a surface of rock strata. The rock bolt includes an adapter having a first portion connectable to a trailing end of an elongate shaft of the rock bolt and means configured to receive and mount a meshing clamp to overlay a second section of meshing sheet against an already laid first section of meshing sheet.Type: GrantFiled: November 12, 2018Date of Patent: June 8, 2021Assignee: SANDVIK INTELLECTUAL PROPERTY ABInventors: Mieczyslaw Rataj, Bradley Darlington, Peter Young, Warren Roach
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Patent number: 10837280Abstract: A friction bolt assembly to frictionally engage a bore formed in rock strata. The assembly includes an elongate tube and an expander mechanism acted on by an anchor mechanism via an elongate bar or cable. A retainer mechanism is mounted to act between the bar or cable and the tube to prevent ejection of the bar or cable from the assembly should the bar or cable break.Type: GrantFiled: June 19, 2019Date of Patent: November 17, 2020Assignee: SANDVIK INTELLECTUAL PROPERTY ABInventors: Mieczyslaw Rataj, Peter Young, Bradley Darlington
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Publication number: 20200318479Abstract: A rock bolt and meshing assembly is arranged for installation of a meshing sheet against a surface of rock strata. The rock bolt includes an adapter having a first portion connectable to a trailing end of an elongate shaft of the rock bolt and means configured to receive and mount a meshing clamp to overlay a second section of meshing sheet against an already laid first section of meshing sheet.Type: ApplicationFiled: November 12, 2018Publication date: October 8, 2020Inventors: Mieczyslaw RATAJ, Bradley DARLINGTON, Peter YOUNG, Warren ROACH
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Publication number: 20190316467Abstract: A friction bolt assembly to frictionally engage a bore formed in rock strata. The assembly includes an elongate tube and an expander mechanism acted on by an anchor mechanism via an elongate bar or cable. A retainer mechanism is mounted to act between the bar or cable and the tube to prevent ejection of the bar or cable from the assembly should the bar or cable break.Type: ApplicationFiled: June 19, 2019Publication date: October 17, 2019Inventors: Mieczyslaw RATAJ, Peter YOUNG, Bradley DARLINGTON
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Patent number: 10370968Abstract: A friction bolt assembly to frictionally engage a bore formed in rock strata includes an elongate tube and an expander mechanism acted on by an anchor mechanism via an elongate bar or cable. A retainer mechanism is mounted to act between the bar or cable and the tube to prevent ejection of the bar or cable from the assembly should the bar or cable break.Type: GrantFiled: November 25, 2016Date of Patent: August 6, 2019Assignee: SANDVIK INTELLECTUAL PROPERTY ABInventors: Mieczyslaw Rataj, Peter Young, Bradley Darlington
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Publication number: 20180347358Abstract: A friction bolt assembly to frictionally engage a bore formed in rock strata includes an elongate tube and an expander mechanism acted on by an anchor mechanism via an elongate bar or cable. A retainer mechanism is mounted to act between the bar or cable and the tube to prevent ejection of the bar or cable from the assembly should the bar or cable break.Type: ApplicationFiled: November 25, 2016Publication date: December 6, 2018Inventors: Mieczyslaw RATAJ, Peter YOUNG, Bradley DARLINGTON
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Patent number: 9927339Abstract: A connector, an associated dynamic testing system and method for testing rock bolts or rock anchors in situ. The connector is attached to a rock bolt/anchor and supports a hanging load via a shaft. The connector has a body of two halves retaining upper first and lower second connectors having respective curved surfaces. Each of the two halves has a curved inner surface allowing limited relative rotational movement of the first and second connectors relative to the two halves when a load is applied. A load cell and accelerometer register the load applied to the rock bolt/anchor through the connector and any resulting movement of the rock bolt/anchor.Type: GrantFiled: February 5, 2014Date of Patent: March 27, 2018Assignee: SANDVIK INTELLECTUAL PROPERTY ABInventors: Bradley Darlington, Marten Bjorn Karlsson, Mieczyslaw Rataj
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Patent number: 9797249Abstract: A friction bolt for frictionally engaging the internal surface of a bore includes a circular tube, which is split longitudinally, and which has a leading end and trailing end. An expander mechanism is disposed within the tube towards the leading end. An elongate bar/cable is disposed within the tube and extends between the expander mechanism at one end and an anchor arrangement at the other end. The bar/cable extends through a ring attached to the trailing end into connection with the anchor arrangement. A restrainer member is disposed within the tube adjacent the ring and extends at least partially about and in engagement with the bar/cable. The tube has a weakened region adjacent the ring and the restrainer member extends longitudinally within the tube past the weakened region. The restrainer member includes a projection that projects through the longitudinal split of the tube for engagement with the bore.Type: GrantFiled: June 8, 2015Date of Patent: October 24, 2017Assignee: SANDVIK INTELLECTUAL PROPERTY ABInventors: Mieczyslaw Rataj, Justyna Czekaj, Bradley Darlington
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Publication number: 20170107815Abstract: A friction bolt for frictionally engaging the internal surface of a bore includes a circular tube, which is split longitudinally, and which has a leading end and trailing end. An expander mechanism is disposed within the tube towards the leading end. An elongate bar/cable is disposed within the tube and extends between the expander mechanism at one end and an anchor arrangement at the other end. The bar/cable extends through a ring attached to the trailing end into connection with the anchor arrangement. A restrainer member is disposed within the tube adjacent the ring and extends at least partially about and in engagement with the bar/cable. The tube has a weakened region adjacent the ring and the restrainer member extends longitudinally within the tube past the weakened region. The restrainer member includes a projection that projects through the longitudinal split of the tube for engagement with the bore.Type: ApplicationFiled: June 8, 2015Publication date: April 20, 2017Inventors: Mieczyslaw RATAJ, Justyna CZEKAJ, Bradley DARLINGTON
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Publication number: 20160025608Abstract: A connector, an associated dynamic testing system and method for testing rock bolts or rock anchors in situ. The connector is attached to a rock bolt/anchor and supports a hanging load via a shaft. The connector has a body of two halves retaining upper first and lower second connectors having respective curved surfaces. Each of the two halves has a curved inner surface allowing limited relative rotational movement of the first and second connectors relative to the two halves when a load is applied. A load cell and accelerometer register the load applied to the rock bolt/anchor through the connector and any resulting movement of the rock bolt/anchor.Type: ApplicationFiled: February 5, 2014Publication date: January 28, 2016Inventors: Bradley DARLINGTON, Marten Bjorn KARLSSON, Mieczyslaw RATAJ
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Publication number: 20150275667Abstract: A machine for installing cable bolts, the machine including a drill for drilling a bore into a rock wall, a grout delivery system for delivering grout into the bore, a cable dispensing arrangement for dispensing cable into the bore, an attachment device for attaching a bore anchor to the leading end of the cable prior to the cable being fed into the bore, and a severing device for severing the cable to form a trailing end thereof. A method of installing a cable rock bolt into a bore is also provided.Type: ApplicationFiled: November 18, 2013Publication date: October 1, 2015Inventors: Alain Comorge, Anssi Kouhia, Mieczyslaw Rataj, Maunu Manttari
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Patent number: 8714883Abstract: A friction bolt, for frictionally engaging the internal surface of a bore drilled into a rock face. The friction bolt comprises an elongate, generally circular tube which is expandable radially. The tube has a leading end and a trailing end. An expander mechanism is disposed within the tube for applying a load tending to expand at least a section of the tube radially. An elongate tendon is disposed longitudinally within the tube and in connection at or towards one end of the tendon with the expander mechanism and in connection at or towards an opposite end of the tendon with an anchor arrangement. The tendon is actuatable to expand the expander mechanism and to remain connected between the expander mechanism and the anchor arrangement while the expander mechanism is expanded.Type: GrantFiled: March 9, 2010Date of Patent: May 6, 2014Assignee: Sandvik Intellectual Property ABInventor: Mieczyslaw Rataj
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Publication number: 20120163924Abstract: A friction bolt, for frictionally engaging the internal surface of a bore drilled into a rock face. The friction bolt comprises an elongate, generally circular tube which is expandable radially. The tube has a leading end and a trailing end. An expander mechanism is disposed within the tube for applying a load tending to expand at least a section of the tube radially. An elongate tendon is disposed longitudinally within the tube and in connection at or towards one end of the tendon with the expander mechanism and in connection at or towards an opposite end of the tendon with an anchor arrangement. The tendon is actuatable to expand the expander mechanism and to remain connected between the expander mechanism and the anchor arrangement while the expander mechanism is expanded.Type: ApplicationFiled: March 9, 2010Publication date: June 28, 2012Applicant: Sandvik Intellectual Property ABInventor: Mieczyslaw Rataj
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Publication number: 20060153645Abstract: A rock bolt (1) comprises a tubular body (4) defining a tubular bore (5) for receiving an adhesive or cement filled cartridge (18). A plug (8) is mounted in the bore (5). The plug (8) is displaceable along the bore (5) and sealingly engages the tubular body (4). A bolt head (7) is located at or adjacent a second end (3) of the rock bolt (1). A detent arrangement (10, 12) restrains the plug (8) in a position adjacent an opening at the first end (2) of the rock bolt (1).Type: ApplicationFiled: December 16, 2005Publication date: July 13, 2006Applicant: DYWIDAG-SYSTEMS INTERNATIONAL PTY LIMITEDInventors: Mieczyslaw Rataj, Andrew Boychuk
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Publication number: 20060054748Abstract: An apparatus for manufacturing a cable bolt from a cable (1) includes first and second clamps (2, 3) adapted to releasably clamp the cable (1) with the cable (1) extending along the longitudinal axis (4) of the apparatus. A first cable displacement device (12) longitudinally displaces the first clamp (2) relative to the second clamp (3) along the longitudinal axis (4). A first clamp rotation device (14) rotates the first clamp (2) relative to the second clamp (3) about the longitudinal axis (4). The apparatus also has a second clamp displacement device (19) for simultaneously longitudinally displacing the first and second clamps (2, 3) along the longitudinal axis (4).Type: ApplicationFiled: September 6, 2005Publication date: March 16, 2006Applicant: DYWIDAG-SYSTEMS INTERNATIONAL PTY LIMITEDInventors: Mieczyslaw Rataj, Alan Henderson, Albert Taylor