Patents by Inventor Frank RÖNNFELDT

Frank RÖNNFELDT 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: 20240181283
    Abstract: The current disclosure describes car parking garages, water mist fire protection systems for car parking garages, methods and water mist sprinklers therefor, the car parking garage system (10) comprising a floor deck (50) and a ceiling deck (51) spaced about a longitudinal axis (A) extending parallel to the ceiling deck (51), defining an effective height range (H1) between the floor deck (50) and the ceiling (51) deck in a direction perpendicular to the longitudinal axis (A); and a fire protection system including a supply pipe system (30) having a parallel portion (31) disposed parallel to the longitudinal axis (A); and at least one water mist sprinkler (100) coupled to the parallel portion (31) of the supply pipe system (30), the at least one water mist sprinkler (100) including a frame body (110) having an inlet (111) for receipt of an extinguishing fluid from the supply pipe system (30), an outlet (113) with a passageway (112) extending between the inlet (111) and the outlet (113) to define a discharge co
    Type: Application
    Filed: November 14, 2023
    Publication date: June 6, 2024
    Inventors: Frank RÖNNFELDT, Stefan SCHNELL
  • Publication number: 20230044995
    Abstract: The invention presents a firefighting system for an extractor duct, in particular of a cooking area, having a duct, which has an inlet side and an outlet side, which is spaced apart from the inlet side, and defines a direction of the extracted air flow from the inlet side to the outlet side. The invention also proposes that at least one spray mist nozzle, preferably a plurality of spray mist nozzles, are installed in the firefighting system, said spray mist nozzles each having a plurality of separate spray mist outlets, wherein the spray mist outlets each have a predetermined K-factor and are oriented at an angle to one another.
    Type: Application
    Filed: June 3, 2020
    Publication date: February 9, 2023
    Inventors: Frank RÖNNFELDT, Stefan SCHNELL
  • Publication number: 20220355315
    Abstract: The invention relates to a spray mist nozzle, in particular an open high-pressure spray mist nozzle for firefighting systems, having a housing which is configured with an extinguishing fluid inlet and is configured with multiple recesses for receiving an exchangeable nozzle insert, such a nozzle insert being inserted into one, multiple/plural or all the recesses. The nozzle insert has a main body with a longitudinal axis that has in the longitudinal axis a spray mist outlet for the extinguishing fluid. An exchangeable swirl body is arranged in the main body and is configured to swirl the extinguishing fluid prior to the latter exiting from the spray mist outlet. The spray mist outlet has a minimum opening cross section, and has a widened exit cross section downstream of the minimum opening cross section, wherein a transition from the minimum opening cross section to the exit cross section runs along a convexly curved surface.
    Type: Application
    Filed: June 3, 2020
    Publication date: November 10, 2022
    Inventors: Frank RÖNNFELDT, Stefan SCHNELL
  • Publication number: 20220355328
    Abstract: The invention relates to an extinguishing nozzle adapter for mounting an extinguishing nozzle on a wall, having a housing and a chamber for receiving an extinguishing nozzle, wherein the housing has an extinguishing agent connection to the chamber, via which connection the chamber is able to be pressurized with extinguishing agent, wherein the chamber is designed to receive the extinguishing nozzle in a movable manner such that the extinguishing nozzle is movable back and forth between a first, retracted position and a second, advanced position, and is moved in the direction of the advanced position when the chamber is pressurized by means of the extinguishing agent.
    Type: Application
    Filed: June 8, 2020
    Publication date: November 10, 2022
    Inventor: Frank RÖNNFELDT
  • Patent number: 10940349
    Abstract: The present invention relates to a protective cap for an extinguishing nozzle, in particular a sprinkler nozzle, which has at least a nozzle main body with a nozzle outlet, with a cap main body, and a cap neck which is arranged on the cap main body, the cap main body having a force transmission section for bearing in sections against a nozzle main body of the extinguishing nozzle in a force-transmitting, preferably positively locking manner, and the protective cap, in particular the cap neck, being set up to mechanically shield the nozzle outlet of the extinguishing nozzle, the cap main body having an outer contour with one or more action surfaces for attaching a tool.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: March 9, 2021
    Assignee: Minimax GmbH & Co. KG
    Inventors: Stefan Schnell, Frank Rönnfeldt
  • Patent number: 10940348
    Abstract: A protective cover for a fire protection sprinkler includes a pair of sidewalls and an orthogonal wall structure connected to an upper edge of each of the pair of sidewalls. The orthogonal wall structure including a slot therein that opens along an edge of the orthogonal wall structure in alignment with an opening between the pair of sidewalls. The slot including a pair of side edges including a pair of opposing arcuate regions adapted to engage a deflector mounting boss of a fire protection sprinkler. An arcuate sidewall extends from the orthogonal wall structure and an upper wall extending inward from an upper edge of the arcuate sidewall and opposing the orthogonal wall structure to define a cavity that is adapted for receiving a deflector of a fire protection sprinkler.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: March 9, 2021
    Assignees: The Viking Corporation, Minimax GmbH & Co. KG
    Inventors: Michael J. Oldham, Stefan Schnell, Shawn G. Orr, Frank Rönnfeldt
  • Patent number: 10926120
    Abstract: The invention relates to a sprinkler housing (50) for a sprinkler (1), in particular for operating pressures above 16 bar, comprising a fluid channel (12) which is provided in the sprinkler housing (50) and has a fluid inlet (10) and at least one fluid outlet (8), a closure element (4), which is movable from a blocking position into a release position in a release direction (A), wherein the closure element (4) closes the fluid channel (12) in the blocking position and releases same in the release position, a sealing element (5), which is mounted on the closure element (4) and is designed to close the fluid channel (12) in a fluid-tight manner in the blocking position, wherein a protective chamber in which the sealing element (5) is arranged is defined between the closure element (4) and the recess (17) in the release position.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: February 23, 2021
    Assignee: Minimax GmbH & Co. KG
    Inventors: Stefan Schnell, Frank Rönnfeldt
  • Publication number: 20190143163
    Abstract: The present invention relates to a protective cap for an extinguishing nozzle, in particular a sprinkler nozzle, which has at least a nozzle main body with a nozzle outlet, with a cap main body, and a cap neck which is arranged on the cap main body, the cap main body having a force transmission section for bearing in sections against a nozzle main body of the extinguishing nozzle in a force-transmitting, preferably positively locking manner, and the protective cap, in particular the cap neck, being set up to mechanically shield the nozzle outlet of the extinguishing nozzle, the cap main body having an outer contour with one or more action surfaces for attaching a tool.
    Type: Application
    Filed: May 2, 2016
    Publication date: May 16, 2019
    Inventors: Stefan SCHNELL, Frank RÖNNFELDT
  • Publication number: 20180296868
    Abstract: The invention relates to a sprinkler housing (50) for a sprinkler (1), in particular for operating pressures above 16 bar, comprising a fluid channel (12) which is provided in the sprinkler housing (50) and has a fluid inlet (10) and at least one fluid outlet (8), a closure element (4), which is movable from a blocking position into a release position in a release direction (A), wherein the closure element (4) closes the fluid channel (12) in the blocking position and releases same in the release position, a sealing element (5), which is mounted on the closure element (4) and is designed to close the fluid channel (12) in a fluid-tight manner in the blocking position. According to the invention, it is proposed that the sprinkler housing (50) has a recess (17), through which the closure element (4) extends at least in the release position, wherein a protective chamber in which the sealing element (5) is arranged is defined between the closure element (4) and the recess (17) in the release position.
    Type: Application
    Filed: October 4, 2016
    Publication date: October 18, 2018
    Inventors: Stefan SCHNELL, Frank RÖNNFELDT