Patents by Inventor Ernst Warncke

Ernst Warncke 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).

  • Patent number: 4574799
    Abstract: A gas mask comprises an outer full mask and an inner half mask for closed cycle respirators leaving an interspace between the half mask and the full mask. The outer mask is sealed around the person's face by one or more sealing frames and the inner mask is sealed with the face around the wearer's nose and mouth. The construction includes a passage between the half mask and a full mask with a check valve which opens with exhalation resistance in a direction toward the space between the full mask and the half mask. The outer full mask has a wall with a linkage compensation device which is closed by a cover and includes a bellows which expands and contracts in the device in accordance with variations in pressure within the interspace between the two masks. A spring is employed to bias the bellows into one of an expanded or contracted situation so that the bellows may either expand or contract against the spring pressure during operation and provide a leakage compensation in the space between the masks.
    Type: Grant
    Filed: June 13, 1983
    Date of Patent: March 11, 1986
    Assignee: Dragerwerk Aktiengesellschaft
    Inventor: Ernst Warncke
  • Patent number: 4508115
    Abstract: In many instances, particularly in mining underground, sudden gas outbursts (of methane, CO.sub.2) make it necessary for workers to have recourse to respiratory protection within seconds. Taking for granted that under such circumstances protective helmets are worn too, it is provided to combine a helmet with a protective breathing hood. At standby, the hood is carried in folded state in a closed space formed at a bent-out rim portion of the helmet. The hood is connected to a breathing gas supply. Upon opening the supply, the breathing gas flows into double-walled portions of the hood and causes unfolding or unrolling, i.e. stretching of the hood, thus dropping from the helmet around the user's head downwardly. The breathing gas continues to flow into the interior of the hood.
    Type: Grant
    Filed: March 28, 1983
    Date of Patent: April 2, 1985
    Assignee: Dragerwerk AG
    Inventor: Ernst Warncke
  • Patent number: 4498470
    Abstract: A respirator comprises a respirator which includes a closed circulation circuit for breathing gas which has in any phase of the breathing process a slight overpressure compared to the ambient atmosphere. The excess pressure in the circuit is maintained by a combination of lung controlled amount of air and an amount of oxygen added independent of the oxygen content in the expiration air. Leakages are compensated to maintain proper breathing. The lung controlled amount of equalizing air prevents the possibility of hazardous outflow in case of leakages. The switchable connection is maintained between the compressed air line and the lung control valve with the oxygen line to ensure the supply of proper circulating air even in a failure of the electrical control of the oxygen supply. For the ratio of the two pressure gas supplies to each other it was expedient to select a ratio of air to oxygen of about 1:4. For a 2 hour apparatus, a 1.
    Type: Grant
    Filed: December 9, 1982
    Date of Patent: February 12, 1985
    Assignee: Dragerwerk AG
    Inventor: Ernst Warncke
  • Patent number: 4470413
    Abstract: A protective breathing apparatus comprises a breathing gas supply tube fitted into a protective face mask which has an opening to which the tube extends and which has a peripheral sealing lip adapted to seal the mask around the user's face. The mouthpiece is attached to the inner end of the tube into the mask and it is engageable by the user's mouth through association with the mouth for breathing. The mask advantageously includes a thickened area on each side of the person's nose to constrict the nose so that breathing is through the mouth, and the mouthpiece advantageously includes bite nipples which are engageable by the mouth in order to hold the tube in the vicinity of the mouth for breathing. Alternatively, the mouthpiece comprises an end having a plurality of serrations along it which fits into the mouth.
    Type: Grant
    Filed: August 9, 1982
    Date of Patent: September 11, 1984
    Assignee: Dr/a/ gerwerk Aktiengesellschaft
    Inventor: Ernst Warncke
  • Patent number: 4440166
    Abstract: A closed cycle respirator is disclosed which includes a respiration air cycle having a breathing bag and a carbon dioxide absorber with connecting lines between the breathing bag and absorber and to a junction adapted for use by the user of the equipment. A pressurized oxygen bottle is provided with a controllable valve for supplying oxygen to the cycle in case the oxygen drops below a selected value in the breathing bag. In case of failure of the controllable valve, a separate oxygen supply connection is provided to the breathing cycle with a valve which senses a reduction of pressure in the breathing cycle and opens the connection to the oxygen bottle for emergency supply of oxygen to the cycle.
    Type: Grant
    Filed: March 11, 1982
    Date of Patent: April 3, 1984
    Assignee: Dragerwerk Aktiengesellschaft
    Inventors: Jorg Winkler, Hans Matthiessen, Ernst Warncke, Adalbert Pasternack
  • Patent number: 4423723
    Abstract: A closed cycle respirator with emergency oxygen supply is disclosed which comprises a main oxygen flow path from an oxygen bottle into a breathing bag of the closed breathing cycle. A switching valve is provided in the first path and branches off into a second path also for supplying oxygen into the bag. The first oxygen flow path has a solenoid valve therein which is controlled by a first oxygen sensor in the breathing bag. The switching valve is controlled by a second oxygen sensor in the breathing bag for switching oxygen supply over to the second flow path in case the solenoid valve malfunctions or anytime the oxygen in the bag falls below or rises above a set desired limit.
    Type: Grant
    Filed: March 11, 1982
    Date of Patent: January 3, 1984
    Assignee: Dragerwerk Aktiengesellschaft
    Inventors: Jo/ rg Winkler, Hans Matthiessen, Ernst Warncke, Adalbert Pasternack
  • Patent number: 4403608
    Abstract: A pressure gas ventilated pressure suit comprises a suit adapted to cover a person which includes a head portion with a face encompassing part which defines a breathing space in front of the person's face and which also includes a body portion defining a pressure space around the person's body and parts of the person's head which is separate from the breathing space. A connection is established between the breathing space and the pressure space through a check valve which permits inhaling of the air found in the pressure space through the breathing space to the wearer. The pressurized breathing gas is connected to discharge gas into the pressure space to maintain it at a predetermined pressure which advantageously provides an inflation of the body portion of the suit. During breathing the wearer inhales in the breathing space and pulls in some of the air from the pressure space through the check valve. The air is exhaled through an exhaling valve connected into the breathing space.
    Type: Grant
    Filed: March 27, 1981
    Date of Patent: September 13, 1983
    Assignee: Dragerwerk Aktiengesellschaft
    Inventor: Ernst Warncke
  • Patent number: 4378011
    Abstract: A valving mechanism for a lung controlled pressure respirator system which uses a mask which fits to the head of a person and includes an outer mask portion adapted to be sealed around the periphery of the person's face and an inner mask portion arranged within the outer mask portion, comprises a housing wtih a flexible diaphragm which extends across the interior of the housing. On one side of the diaphragm the housing is exposed to atmospheric pressure and on the opposite side it is connected to a pressure space defined between inner and outer mask portions of the oxygen mask. The housing also has a control valve portion in communication with the opposite side of the diaphragm. A respirator breathing air supply conduit is connected to the control valve portion.
    Type: Grant
    Filed: March 11, 1981
    Date of Patent: March 29, 1983
    Assignee: Dragerwerk Aktiengesellschaft
    Inventors: Ernst Warncke, Adalbert Pasternack
  • Patent number: 4364384
    Abstract: An excess pressure respirator with automatic or manual shutoff valve is disclosed. A breathing bag having at least one movable plate member is utilized to receive and supply breathing air from a user. The plate member is biased to reduce the volume of the bag and apply pressure to the contents of the bag. A pressurized gas source is connected through a connecting line to the bag. A dosing valve is positioned in the connecting line to be opened when the volume of the bag is reduced during an inhalation cycle and then closed so that a dosed quantity of oxygen is supplied to the bag. A shutoff valve is also provided in the connection for shutting flow of breathing gas from the source entirely when the bag falls below a minimum volume which is indicative of a large leak or the removal of a gas mask from the user's face. A manual shutoff may also be provided in the form of a movable block which stops the movement of the biased plate member before it engages the dosing valve to open it.
    Type: Grant
    Filed: March 30, 1981
    Date of Patent: December 21, 1982
    Assignee: Dragerwerk Aktiengesellschaft
    Inventors: Ernst Warncke, Adalbert Pasternack
  • Patent number: 4289238
    Abstract: A readiness receptacle for housing a device such as a respirator, includes a first shell portion hingedly connected to a second shell portion. The connected shell portions define a space in which the device is disposed in a tearable bag sealed on all sides. At least one of the shell sections is pivotable to open said receptacle. A tear strap is connected to the tearable bag and portions of the tear strap are connected to each of the shell portions for tearing open the tearable bag simultaneously with the opening of the shell portions.
    Type: Grant
    Filed: October 4, 1979
    Date of Patent: September 15, 1981
    Assignee: Dragerwerk Aktiengesellschaft
    Inventors: Ernst Warncke, Joachim Schlobohm, Jurgen Behnke
  • Patent number: 4275723
    Abstract: A warning device for breathing apparatus which has a respiratory gas conduit through which respiratory gases are passed and which includes three interconnected chambers. Two of the chambers include diaphragm valves operable, responsive to pressure conditions therein, to actuate a piston in the third chamber which moves a signaling element into the gas conduit to signal a low pressure condition.
    Type: Grant
    Filed: August 22, 1979
    Date of Patent: June 30, 1981
    Assignee: Dragerwerk Aktiengesellschaft
    Inventors: Ernst Warncke, Adalbert Pasternack
  • Patent number: 4256698
    Abstract: A chemical cartridge for giving off oxygen for use in respirators, comprises, a container having an oxygen-liberating chemical therein, with a spark plug engaged in the chemical and developing heat and oxygen when started to ignite and aid in the combustion of the chemical. A container of a shape to extend around at least the sides and one end of the spark plug is filled with water and it has an opening which is closed by a plug. The plug is made so that it will open during the burning of the spark plug and supply water to the chemical.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: March 17, 1981
    Assignee: Dragerwerk Aktiengesellschaft
    Inventor: Ernst Warncke
  • Patent number: 4253454
    Abstract: A respirator package for carrying on a person includes a tubular frame which forms a container for a high pressure gas such as oxygen. A respiratory air circulating system is adapted to be mounted on the frame and connected to the high pressure gas therein for the selected circulation of the gas and respiratory air to and from the wearer and also advantageously includes means for regenerating the breathing air and supplementing it with the gas such as oxygen. The high pressure gas container comprises a frame made up of successive windings of a tube to form a closed container having a connecting valve associated therewith. The frame thus formed is advantageously provided with straps so that the frame can be carried on a wearer's back and it provides a spacing and insulation for a breathing system which advantageously includes a regenerator which is likely to heat during operation. The parts of the system are held in place on the frame by means of a casing which is secured to the frame.
    Type: Grant
    Filed: May 23, 1979
    Date of Patent: March 3, 1981
    Assignee: Dragerwerk Aktiengesellschaft
    Inventor: Ernst Warncke
  • Patent number: 4249473
    Abstract: A warning device for indicating a reduction of breathing gas supply pressure in an air breathing conduit includes a warning device member disposed in the breathing conduit which has a connection to the gas supply and is movable in response to a drop in the air supply pressure beyond the predetermined amount into at least a partially blocking position so as to increase the flow resistance through the breathing conduit so that the patient using the device is warned by the condition. The device includes a correction element connected to the conduit which moves the warning member in a direction away from the blocking position so that the warning cycle is again initiated.
    Type: Grant
    Filed: May 9, 1979
    Date of Patent: February 10, 1981
    Assignee: Dragerwerk Aktiengesellschaft
    Inventors: Adalbert Pasternack, Ernst Warncke
  • Patent number: 4213453
    Abstract: A breathing device to facilitate a person's respiratory breathing of air with sufficient oxygen, comprises a breathing conduit adapted to be connected to a person for breathing. A breathing bag surrounds a portion of the conduit and it is connected into the conduit through suitable check valve elements to permit respiratory breathing along the conduit and from and to the bag. A first chemical cartridge has a first housing with an opening therethrough through which the conduit extends and it has an oxygen-liberating chemical therein which surrounds and is spaced radially outwardly from the conduit. An annular passage is defined in the space between the chemical and the conduit which communicates with the bag. The conduit has an end adjacent the bottom end of the first cartridge which is connectable to a central tube of a second chemical cartridge. The central tube has an end portion which interengages with the bottom end portion of the first conduit.
    Type: Grant
    Filed: January 12, 1978
    Date of Patent: July 22, 1980
    Assignee: Dragerwerk Aktiengesellschaft
    Inventors: Ernst Warncke, Adalbert Pasternack
  • Patent number: 4200092
    Abstract: The respirator comprises a first oxygen-liberating chemical cartridge housing which has a first end with a first opening and an opposite end with a second opening. The first cartridge has a tubular extension adjacent the second end communicating with the second opening and having a lateral air bag opening which opens into an air bag which surrounds the first cartridge. A breathing hose is connected from a mouthpiece which is adapted to be worn by a patient to the first opening of the first cartridge housing. The first cartridge housing also has a breathing tube connected to the second opening of the first cartridge housing and it may be coupled to a similar second breathing tube portion of a second cartridge housing. In addition, the second cartridge housing may be coupled to the air bag or the extension of the first cartridge housing so as to form an airtight seal therewith.
    Type: Grant
    Filed: January 19, 1978
    Date of Patent: April 29, 1980
    Assignee: Dragerwerk Aktiengesellschaft
    Inventors: Ernst Warncke, Adalbert Pasternack
  • Patent number: 4187843
    Abstract: A respirator comprises an air hose which has a mouthpiece which is adapted to be connected to the patient and an opposite end which is connected into a first cartridge housing which has an oxygen-liberating chemical therein. The first cartridge housing has a tubular inlet member connected between the air hose and the housing which has a through-flow air passage from the air hose into the housing, and has a second cartridge receiving opening intermediate the air passage. The first cartridge housing has a bottom wall which is spaced from the chemical therein and which has a connection at one end for connecting an air bag which is arranged around the cartridge. The opposite end of the bottom wall has a second cartridge receiving opening. The second cartridge housing has one end with a laterally extending tubular connection piece which defines an air flow passage which is insertable into the first receiving opening of the first housing in a manner such that it blocks the flow passage.
    Type: Grant
    Filed: January 19, 1978
    Date of Patent: February 12, 1980
    Assignee: Dragerwerk Aktiengesellschaft
    Inventors: Ernst Warncke, Adalbert Pasternack
  • Patent number: 4178961
    Abstract: A lung-controlled valve for compressed gas respirators comprises a valve housing having a diaphragm chamber with a diaphragm extending across the chamber and being displaceable backwardly and forwardly in the chamber by pressure changes on respective sides thereof. A connecting piece for supplying breathing gas to a patient is connected into the chamber on one side of the diaphragm and the patient's breathing pressure controls the operation of the diaphragm. A valve member having a valve chamber with a pressure gas inlet has a valve seat in the chamber with a valve opening into one side of the diaphragm chamber. A valve body closing the valve seat and shutting off the pressure gas flow into the chamber has a tippling lever connected thereto and disposed in the one diaphragm chamber adjacent the diaphragm in a position to be contacted during movement thereof to open the valve.
    Type: Grant
    Filed: October 11, 1977
    Date of Patent: December 18, 1979
    Assignee: Dragerwerk Aktiengesellschaft
    Inventor: Ernst Warncke
  • Patent number: 4172454
    Abstract: A suit for the protection of a wearer's body and head from heat and gas comprises an inner suit adapted to cover the wearer's body and head and having a tubular flow channel therethrough for the passage of a cooling liquid such as silicone. An outermost suit overlies the innermost suit and it has a body covering and a head covering portion. The head covering portion includes a face mask. A heat exchanger is mounted so as to connect into the outermost suit and includes a coolant chamber for containing a vaporizable coolant therein. The vaporizable coolant such as carbon dioxide is maintained under pressure and the cooling liquid is circulated into heat exchange relationship therewith so as to cool down the wearer's body. In addition the device includes a respirator for circulating respiratory air to the face of the wearer which advantageously includes a passage adjacent the heat exchanger so that the incoming air may also be cooled if desired.
    Type: Grant
    Filed: September 28, 1977
    Date of Patent: October 30, 1979
    Assignee: Dragerwerk Aktiengesellschaft
    Inventors: Ernst Warncke, Adalbert Pasternack
  • Patent number: 4154235
    Abstract: An escape filter device for engagement over the head of a wearer, comprises a protective hood made of a transparent foil, such as, a plastic material. The hood has an opening in the front which aligns with the mouth of the wearer into which a mouthpiece of a filter is attached. The filter has means for purifying the incoming air which is inhaled into the mouth and exhaled out of the mouth directly through passages defined in the filter. The hood includes a nose piece of resilient material which projects inside of the hood against the face of the wearer beneath the nose and over the upper lip. This nose piece may be compressed to engage it tightly against the nose to prevent breathing of any air which enters into the hood by tightening a strap which engages around the jaw and neck of the wearer and may be fastened at the rear of the hood. An additional chin strap or strap fitting below the chin against the neck may be provided.
    Type: Grant
    Filed: September 2, 1977
    Date of Patent: May 15, 1979
    Assignee: Dragerwerk Aktiengesellschaft
    Inventor: Ernst Warncke