Patents by Inventor Ralf Drews
Ralf Drews 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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Publication number: 20230415930Abstract: A valve bag filling device for filling powdered filling material into a valve bag is provided, and has a filling spout (1), which is provided so as to be introduced into a valve hose of a valve bag to be filled. The device has a conveying device for conveying the filling material to be filled from a supply tank through the filling spout (1) into a valve bag resting on the filling spout (1) with the valve hose, as well as a suction device (3, 4) for aspirating excess filling material via a suction opening (5). The suction opening (5) is arranged spaced a distance (9, 10) from the filling spout (1). A control device is provided, with which the suction opening (5) can be traversed in a direction (6) in relation to the filling spout (1).Type: ApplicationFiled: June 21, 2023Publication date: December 28, 2023Inventors: Alexander BOJE, Bernd TILLACK, Ralf DREWS, Alexander MILDNER
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Publication number: 20230415935Abstract: A closure device (2) for closing a flexible container (4), in particular a valve bag (4), has a welding device (14), a sensor device (20) for acquiring a position of a part of the container (4) to be closed (6), and a control unit (28). The control unit (28) is coupled with the sensor device (20) and with the welding device (14), and is configured to place the welding device (14) in a first position and a second position spaced apart from the first position on the part of the container (4) to be closed (6) by actuating at least one moving device, to detect when at least one of the two positions has been reached via the sensor unit (20), and to actuate the welding device (14) at the respective first and second position to generate a weld seam on the container (4).Type: ApplicationFiled: June 21, 2023Publication date: December 28, 2023Inventors: Alexander BOJE, Bernd TILLACK, Ralf DREWS, Alexander MILDNER
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Patent number: 8212211Abstract: The invention provides a system and process in which more than only one category of information must be made available in an optically simultaneously recognizable form to a person in a portable system (17) for protecting and/or guiding persons in dangerous situations, firefighters or rescue teams in buildings. The system includes an infrared camera (12) for recording data, especially heat image data; an energy supply device, especially a battery; at least one interface (18) for transmitting data; and at least one display device (16), especially a monitor and/or a warning light, for visually displaying data. At least one exit finder (13) and/or at least one gas sensor (14) and/or at least one motion detector is also provided.Type: GrantFiled: December 4, 2008Date of Patent: July 3, 2012Assignee: Dräger Safety AG & Co. KGaAInventors: Ralf Drews, Stefan Morley
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Publication number: 20090184244Abstract: The invention provides a system and process in which more than only one category of information must be made available in an optically simultaneously recognizable form to a person in a portable system (17) for protecting and/or guiding persons in dangerous situations, firefighters or rescue teams in buildings. The system includes an infrared camera (12) for recording data, especially heat image data; an energy supply device, especially a battery; at least one interface (18) for transmitting data; and at least one display device (16), especially a monitor and/or a warning light, for visually displaying data. At least one exit finder (13) and/or at least one gas sensor (14) and/or at least one motion detector is also provided.Type: ApplicationFiled: December 4, 2008Publication date: July 23, 2009Applicant: DRAGER SAFETY AG & CO. KGAAInventors: Ralf DREWS, Stefan MORLEY
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Patent number: 7336191Abstract: A gas-measuring system is provided that is suitable for both mobile and stationary use. A mobile measuring device (2) with sensors (4, 5, 6, 7) for detecting gas concentrations and a base station (3) are provided for this purpose. The mobile measuring device (2) is inserted into a holder (31) of the base station (3) and the operating functions to the measuring device (2) are now switched over to the base station (3).Type: GrantFiled: May 19, 2006Date of Patent: February 26, 2008Assignee: Dräger Safety AG & Co. KGaAInventors: Ralf Drews, Ingo Pooch
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Publication number: 20070063828Abstract: A gas-measuring system is provided that is suitable for both mobile and stationary use. A mobile measuring device (2) with sensors (4, 5, 6, 7) for detecting gas concentrations and a base station (3) are provided for this purpose. The mobile measuring device (2) is inserted into a holder (31) of the base station (3) and the operating functions to the measuring device (2) are now switched over to the base station (3).Type: ApplicationFiled: May 19, 2006Publication date: March 22, 2007Applicant: DRAGER SAFETY AG & CO. KGAAInventors: Ralf DREWS, Ingo POOCH
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Publication number: 20030200969Abstract: A gas mask (1) is provided with a sealing element (5) of a special shape. The sealing element is easy to handle for use with a plug-in breathing filter (4). The sealing element also provides good sealing against gases from the environment. The sealing element (5) of the gas mask (4) seals the outlet (3) for the breathing filter (4) all around and has a cross section that is limited axially by two parallel, flat, peripheral surfaces (51, 52), whose radial inner limiting surface (53) is concave, and whose radial outer limiting surface (54) extends axially from the outside to the inside first concavely and passes over in the middle area into an elevation (55) tapering outwardly in the radial direction.Type: ApplicationFiled: February 10, 2003Publication date: October 30, 2003Inventors: Hartmut Kintzel, Ralf Drews, Markus Kater
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Patent number: 6338341Abstract: A protective breathing mask has a connector housing unit having a connector housing for accommodating breathing mask components. The connector housing unit has a flange-like collar extending from the connector housing. The flange-like collar has a connecting rim. A mask body made of an elastomer has a profile-reinforced portion defining a cutout for the connector housing unit and the profile-reinforced portion is shaped to match the peripheral rim. A clamping ring is provided for fixedly securing the profile-reinforced portion at the connecting rim. The clamping ring has a slot for holding the profile-reinforced portion. The clamping ring is shaped to match the connecting rim of the flange-like collar and has a connecting surface for connecting the clamping ring to the collar at the connecting rim.Type: GrantFiled: November 8, 1999Date of Patent: January 15, 2002Assignee: Dräger Sicherheitstechnik GmbHInventors: Ralf Drews, Hartmut Kintzel
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Patent number: 5704348Abstract: A breathing valve with a valve disk lying on a valve crater and with a valve spring, which is in contact with the valve disk. A first spring end is provided in contact with a support surface and a second spring end is provided. The valve disk is accommodated in a guide displaceable along an axial valve axis, and the valve spring is fastened such that the line of action of the spring is directed at an angle in relation to the valve axis. The valve is extensively prevented from vibrating.Type: GrantFiled: October 10, 1996Date of Patent: January 6, 1998Assignee: Dragerwerk AktiengesellschaftInventor: Ralf Drews
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Patent number: 5625902Abstract: A protective hood (1) made of an elastic, elastomeric, gas-impermeable material, with a head area (2) and a neck area (4) joining the head area (2) with its top end (3), is to be improved such that good seating of the protective hood is achieved at different head sizes. This object is accomplished by the protective hood (1) being made in one piece according to the dipping process by means of a plate-shaped mold, the material of the protective hood having an elongation at tear greater than or equaling 600% and a modulus 100% of 0.15 to 1.3 N/mm.sup.3, and that with the protective hood (1) folded up flat, the greatest width (10) of the head area (2) is 250 mm to 340 mm and preferably about 287 mm.Type: GrantFiled: October 23, 1995Date of Patent: May 6, 1997Assignee: Dr agerwerk AGInventors: Ralf Drews, Hartmut Kintzel
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Patent number: 5601078Abstract: A breathing apparatus with a display unit for the transmission of measured data via a display field of the display unit into the field of vision of a person wearing the unit. The readability of the measured data displayed is improved in daylight with simultaneously reduced energy demand. The display field includes an LC display, which is at least transparent for transmission radiation. An optical concentrator is provided, which collects the ambient light via a light entering surface and emits the collected light via a light exiting surface.Type: GrantFiled: May 22, 1995Date of Patent: February 11, 1997Assignee: Dragerwerk AGInventors: Uwe Schaller, Detlef Wolter, Hansjochen Schuck, Ralf Drews
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Patent number: 5515846Abstract: A respirator including a mask body with a breathing filter at a breathing connection of the mask body, with a cuff accommodating the breathing filter and with a bellows, which seals the mask interior against the environment. The bellows is connected to the cuff and to the mask body. The breathing filter is locked in the position of use based on the bellows being made in one piece with the breathing connection, as a continuation of the mask body. The bellows surrounds the cuff in the manner of a truncated cone, in at least one partial section of the extent of the breathing filter.Type: GrantFiled: June 1, 1995Date of Patent: May 14, 1996Assignee: Dragerwerk AGInventor: Ralf Drews