Patents by Inventor Rolf Erhardt

Rolf Erhardt 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).

  • Publication number: 20250032098
    Abstract: A system and method for concurrently and uniformly removing thermal energy from a specimen sample. A thermal insulating device is provided comprising an insulating material, the device having a plurality of chambers for receiving specimen samples, the device further includes a thermal ballast whereby the rate of thermal energy removal is controlled and influenced by the thermal ballast.
    Type: Application
    Filed: August 27, 2024
    Publication date: January 30, 2025
    Inventors: Rolf Erhardt, Brian Schryver
  • Patent number: 12070198
    Abstract: A system and method for concurrently and uniformly removing thermal energy from a specimen sample. A thermal insulating device is provided comprising an insulating material, the device having a plurality of chambers for receiving specimen samples, the device further includes a thermal ballast whereby the rate of thermal energy removal is controlled and influenced by the thermal ballast.
    Type: Grant
    Filed: July 27, 2021
    Date of Patent: August 27, 2024
    Inventors: Rolf Erhardt, Brian Schryver
  • Publication number: 20240042540
    Abstract: A welding device for welding a stud to a substrate along a welding axis in a welding direction, comprising an inert gas cover with an inert gas inlet arranged as a ring around the axis, with an inert gas outlet, and an opening facing the welding direction, the opening having transversely to the welding direction an opening diameter, wherein the inert gas inlet is at an inlet distance from the opening counter to the welding direction, wherein the inert gas outlet is at an outlet distance from the opening counter to the welding direction, and a holding device holding the stud within the cover during welding, the holding device having an outside diameter and a stud receptacle with an inside diameter, wherein the outlet distance is at least half of a difference between the opening diameter and the outside diameter or at least the same size as the inlet distance.
    Type: Application
    Filed: December 1, 2021
    Publication date: February 8, 2024
    Inventors: Rolf ERHARDT, Julia ZIELBAUER, Sigrid ANDREAE
  • Publication number: 20240009751
    Abstract: A welding device for welding a stud to a substrate along a welding axis in a welding direction, comprising an inert gas cover with a welding chamber and a holding device holding the stud within the welding chamber during welding, wherein the cover has an input channel, a distribution chamber, a multiplicity of first connecting channels and an inert gas inlet into the welding chamber, wherein an inert gas feed line can be connected to the input channel, the input channel opening into the distribution chamber, the first connecting channels opening into the distribution chamber at different distances from the input channel, the first connecting channels connecting the distribution chamber pneumatically to the inert gas outlet, and wherein a common cross-sectional area of the first connecting channels is all the greater, the greater the distance from the input channel at which the first connecting channels open into the distribution chamber.
    Type: Application
    Filed: December 3, 2021
    Publication date: January 11, 2024
    Inventors: Rolf ERHARDT, Ralph LIPPUNER, Eric SCHULTE SUEDHOFF
  • Publication number: 20210353271
    Abstract: A system and method for concurrently and uniformly removing thermal energy from a specimen sample. A thermal insulating device is provided comprising an insulating material, the device having a plurality of chambers for receiving specimen samples, the device further includes a thermal ballast whereby the rate of thermal energy removal is controlled and influenced by the thermal ballast.
    Type: Application
    Filed: July 27, 2021
    Publication date: November 18, 2021
    Applicant: Cool Lab, LLC
    Inventors: Rolf Erhardt, Brian Schryver
  • Patent number: 11071528
    Abstract: A system and method for concurrently and uniformly removing thermal energy from a specimen sample. A thermal insulating device is provided comprising an insulating material, the device having a plurality of chambers for receiving specimen samples, the device further includes a thermal ballast whereby the rate of thermal energy removal is controlled and influenced by the thermal ballast.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: July 27, 2021
    Inventors: Rolf Erhardt, Brian Schryver
  • Publication number: 20190059862
    Abstract: A system and method for concurrently and uniformly removing thermal energy from a specimen sample. A thermal insulating device is provided comprising an insulating material, the device having a plurality of chambers for receiving specimen samples, the device further includes a thermal ballast whereby the rate of thermal energy removal is controlled and influenced by the thermal ballast.
    Type: Application
    Filed: August 28, 2018
    Publication date: February 28, 2019
    Inventors: Rolf Erhardt, Brian Schryver
  • Publication number: 20180222029
    Abstract: The invention relates to a setting tool driven by internal combustion, for driving in fastening elements, having at least one combustion chamber and one drive piston which has a first piston surface which faces the combustion chamber and a second piston surface which faces away from the combustion chamber and delimits an expansion chamber, and having a fluid conveying device which conveys a volumetric flow. In order to improve the effectiveness and/or the functionality of the setting tool a switchover device is arranged on an outlet side of the fluid conveying device, by way of which switchover device the volumetric flow can be conveyed by the fluid conveying device in full or in part to different points in or on the setting tool.
    Type: Application
    Filed: September 27, 2016
    Publication date: August 9, 2018
    Inventor: Rolf ERHARDT
  • Patent number: 9782881
    Abstract: The invention relates to a device for transmitting energy to a fastener, with a reaction chamber, an energy-transmission element that can move in a fastening direction for transmitting energy released in the reaction chamber to a fastener, a first supply channel opening into the reaction chamber for feeding a first reagent to the reaction chamber, wherein the first supply channel comprises a feeder device for feeding the first reagent into the reaction chamber and a controllable closing device for a time-wise closing of the first supply channel.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: October 10, 2017
    Assignee: HILTI AKTIENGESELLSCHAFT
    Inventors: Iwan Wolf, Mario Zahner, Rolf Erhardt
  • Patent number: 9782882
    Abstract: The invention relates to a device for transmitting energy to a fastener, with a reaction chamber, an energy-transmission element that can move in a fastening direction for transmitting energy released in the reaction chamber to a fastener, a first supply channel opening into the reaction chamber for feeding a first reagent to the reaction chamber, wherein the first supply channel comprises a feeder device with a rotor and a feeder element for feeding the first reagent into the reaction chamber.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: October 10, 2017
    Assignee: HILTI AKTIENGESELLSCHAFT
    Inventors: Iwan Wolf, Mario Zahner, Rolf Erhardt, Peter Goepfert
  • Patent number: 8851352
    Abstract: A setting tool for driving a fastening element in a constructional component includes a housing (11), a drive member (13) displaceable in a guide (12) located in the housing, a bolt guide (15) adjoining the drive member guide (12) in direction of the operational axis (A) and forming a dog point (16) for abutting the constructional component and a drive-in depth setting tool (20) for displacing the bolt guide (15) axially relative to the drive member guide (15) for setting a distance between a drive end (14) of the drive member (13) and the dog point (16) in the initial position of the drive member.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: October 7, 2014
    Assignee: Hilti Aktiengesellschaft
    Inventors: Rolf Erhardt, Peter Stauss, Dierk Tille
  • Patent number: 8827131
    Abstract: A switching adapter for enabling individual settings with a hand-held setting tool (10) having a magazine (40) for fastening elements (51), and a detection element (31) for detecting presence of a fastening element (51) in a receiving chamber of the setting tool. The adapter (60) includes a retaining section (61) for releasably mounting the switching adapter (60) on the fastening elements magazine (40) of the setting tool (10), and an actuation section (62) that displaces the detection element (31) of the setting tool from its a locking position to its release position.
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: September 9, 2014
    Assignee: Hilt Aktiengesellschaft
    Inventors: Mario Zahner, Rolf Erhardt
  • Publication number: 20130270319
    Abstract: The invention concerns a fastener driving tool comprising a tank for storage of a fuel, in particular liquefied gas, a combustion chamber connected to the tank, a piston that is movable in a cylinder for driving a driving ram, and at least one exhaust gas opening for ejection of exhaust gases after an ignition of a fuel/air mixture, where the development of the gas pressure of the combustion chamber is selectably reducible compared to a maximum pressure development, in order to affect a driving energy of the piston through the ejection, where, if a driving energy is reduced, the maximum pressure development after the ignition is applied over a first segment of travel of the piston.
    Type: Application
    Filed: April 11, 2013
    Publication date: October 17, 2013
    Applicant: Hilti Aktiengesellschaft
    Inventors: Moritz GAUGER, Tilo Dittrich, Simon Beauvais, Rolf Erhardt
  • Publication number: 20120292061
    Abstract: The invention relates to a fastener-setting tool with a combustion chamber (12), in which an electrically driven device (14) for generating turbulence or for flushing the combustion chamber (12) is arranged, and with an electrical energy storage device (24). In order to further simplify the operation of a fastener-setting tool, the electrical energy storage device (24) is configured for operation with non-rechargeable primary cells.
    Type: Application
    Filed: May 17, 2012
    Publication date: November 22, 2012
    Applicant: Hilti Aktiengesellschaft
    Inventors: Tilo DITTRICH, Rolf ERHARDT, Iwan WOLF
  • Patent number: 7980440
    Abstract: A combustion-engined setting tool (10) for driving fastening elements in a workpiece includes a combustion chamber (11), a drive piston (15) displaceable in a piston guide (17) and driven by expanding gases produced in the combustion chamber (11), and a device for returning the drive piston (15) in its initial position as a result of pressure difference between chambers formed on opposite axial sides of the piston head (115), and including a pump (20).
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: July 19, 2011
    Assignee: Hilti Aktiengesellschaft
    Inventors: Christian Hahn, Rolf Erhardt
  • Publication number: 20110101064
    Abstract: The invention relates to a device for transmitting energy to a fastener, with a reaction chamber, an energy-transmission element that can move in a fastening direction for transmitting energy released in the reaction chamber to a fastener, a first supply channel opening into the reaction chamber for feeding a first reagent to the reaction chamber, wherein the first supply channel comprises a feeder device for feeding the first reagent into the reaction chamber and a controllable closing device for a time-wise closing of the first supply channel.
    Type: Application
    Filed: September 17, 2010
    Publication date: May 5, 2011
    Applicant: HILTI AKTIENGESELLSCHAFT
    Inventors: Iwan Wolf, Mario Zahner, Rolf Erhardt
  • Publication number: 20110068141
    Abstract: The invention relates to a device for transmitting energy to a fastener, with a reaction chamber, an energy-transmission element that can move in a fastening direction for transmitting energy released in the reaction chamber to a fastener, a first supply channel opening into the reaction chamber for feeding a first reagent to the reaction chamber, wherein the first supply channel comprises a feeder device with a rotor and a feeder element for feeding the first reagent into the reaction chamber.
    Type: Application
    Filed: September 17, 2010
    Publication date: March 24, 2011
    Applicant: HILTI AKTIENGESELLSCHAFT
    Inventors: Iwan Wolf, Mario Zahner, Rolf Erhardt, Peter Goepfert
  • Patent number: 7836545
    Abstract: A manually guided suction apparatus for suctioning up material via a suction air stream, comprising a suction fan having a fan housing surrounding a fan wheel and provided with an intake opening. A centrifugal separator is disposed upstream of the intake opening and produces a curved path of the suction air stream. The centrifugal separator has a curved peripheral wall in which is disposed a removal opening for material that is to be sucked up. The intake opening is disposed approximately in a central portion of the centrifugal separator.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: November 23, 2010
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Georg Maier, Wolfgang Layher, Markus Zwimpfer, Uwe Gaese, Marco Deuchert, Michael Hermann, Sebastian Gembardt, Jochen Keinath, Rolf Erhardt
  • Publication number: 20100140313
    Abstract: A switching adapter for enabling individual settings with a hand-held setting tool (10) includes a retaining section (61) for releasably mounting the switching adapter (60) on the fastening elements magazine (40) of the setting tool (10), and an actuation section (62) for displacing the detection element (31) of the setting tool from its a locking position to its release position.
    Type: Application
    Filed: March 12, 2009
    Publication date: June 10, 2010
    Inventors: Mario Zahner, Rolf Erhardt
  • Publication number: 20090250499
    Abstract: A combustion-engined setting tool (10) for driving fastening elements in a workpiece includes a combustion chamber (11), a drive piston (15) displaceable in a piston guide (17) and driven by expanding gases produced in the combustion chamber (11), and a device for returning the drive piston (15) in its initial position as a result of pressure difference between chambers formed on opposite axial sides of the piston head (115), and including a pump (20).
    Type: Application
    Filed: March 31, 2009
    Publication date: October 8, 2009
    Inventors: Christian Hahn, Rolf Erhardt