Patents by Inventor Manfred Pawelzik

Manfred Pawelzik 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: 7171984
    Abstract: A mixing valve has a housing having hot- and cold-water inlets and at least one hot-, cold-, or mixed-water outlet. Respective hot- and cold-water valves in the housing each have a valve stem rotatable to control flow through the respective valve and carrying a respective externally toothed gear. Respective hot- and cold-water control rings rotatably mounted about a common axis on the housing each have internal teeth in continuous mesh in all angular positions of the valves and rings with the gears of the respective valves.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: February 6, 2007
    Assignee: Grohe Water Technology AG & Co. KG
    Inventors: Manfred Pawelzik, Fred Hannemann
  • Publication number: 20050115617
    Abstract: In a mixing valve has a housing (1) having hot- and cold-water inlets and at least one hot-, cold-, or mixed-water outlet and holding two parallel valves (2a and 2b) for separate control of the hot and cold water, the two valves (2a and 2b) each having a valve stem that is connected at one end with a respective valve member and on the other side with a gear (20) couplable with an actuator, it is proposed that the actuator comprise two control rings (3 and 4) rotatably mounted on the housing (1) and having internal teeth, the internal teeth of each of the control rings (3 and 4) meshing in every angular position with a respective one of the gears (20) of the respective valve (2a or 2b).
    Type: Application
    Filed: July 25, 2003
    Publication date: June 2, 2005
    Inventors: Manfred Pawelzik, Fred Hannemann
  • Patent number: 6390125
    Abstract: A manually-operated valve is provided in series with an electromagnetically-operated valve and the manually-operated valve is provided with a proximity detector connected to the electronic controller whereby a switch in the manually-operated valve, in one position of the single control lever therefor, corresponding to about 50% of maximum supply rate, is operated to activate the proximity sensor and enable the water flow to be controlled by an object within its detection range. Removal of the object, e.g. the hand of the user from the range, will shut off the water through the manually-operated valve. Outside the position of the lever at which the switch is operated, the proximity detector is ineffective and control is effected exclusively by swinging the lever.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: May 21, 2002
    Assignee: Friedrich Grohe AG & Co. KG
    Inventors: Manfred Pawelzik, Hans-J├╝rgen Ludewig, Wolfgang Gebhardt, Hartwig Philipps-Liebich
  • Publication number: 20010011560
    Abstract: A manually-operated valve is provided in series with an electromagnetically-operated valve and the manually-operated valve is provided with a proximity detector connected to the electronic controller whereby a switch in the manually-operated valve, in one position of the single control lever therefor, corresponding to about 50% of maximum supply rate, is operated to activate the proximity sensor and enable the water flow to be controlled by an object within its detection range. Removal of the object, e.g. the hand of the user from the range, will shut off the water through the manually-operated valve. Outside the position of the lever at which the switch is operated, the proximity detector is ineffective and control is effected exclusively by swinging the lever.
    Type: Application
    Filed: January 24, 2001
    Publication date: August 9, 2001
    Applicant: Friedrich Grohe AG & Co. KG
    Inventors: Manfred Pawelzik, Hans-Jurgen Ludewig, Wolfgang Gebhardt, Hartwig Philipps-Liebich
  • Patent number: 6199586
    Abstract: A mixing valve has a housing, a fixed valve plate in the housing having a flat outer surface generally centered on and perpendicular to a main axis and formed offset from the main axis with a pair of angularly offset and axially throughgoing inlet ports, and a movable valve plate in the housing having an inner surface flatly engaging the outer surface of the fixed valve plate and an opposite outer surface. The movable valve plate is formed with a pair of angularly offset and axially throughgoing inlet ports alignable with the fixed-plate inlet ports. The ports of one of the pairs of inlet ports are at different radial spacings from a center of the respective plate.
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: March 13, 2001
    Assignee: Friedrich Grohe AG & Co. KG
    Inventors: Manfred Pawelzik, Max Derr
  • Patent number: 6116279
    Abstract: A valve cartridge has a hollow housing having an open end, a floor plate closing the open end and formed with a plurality of throughgoing ports each having an inner surface, a valve plate in the housing fixed atop the floor plate and formed with holes aligned with the floor-plate ports, a movable valve plate in the housing atop the fixed valve plate and formed with a cavity, and an actuating element connected to the movable valve plate for displacing the movable valve plate on the fixed plate and shifting the cavity into and out of engagement with the fixed-plate holes so that if one of the holes is supplied with water under pressure the actuating element can control flow from the one hole to the other hole. Respective annular seal rings made of an elastomeric plastic are received in the ports, formed in situ in the ports, and have outer surfaces bonded to the inner surfaces of the respective ports. The floor plate is made of a material that can bond to and slide relative to the plastic of the seal rings.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: September 12, 2000
    Assignee: Friedrich Grohe AG & Co. KG
    Inventors: Manfred Pawelzik, Horst Titze, Manfred Graf
  • Patent number: 6035463
    Abstract: A valve having an input and two outputs is provided with a stem extending radially from and pivotal about a transverse axis from a middle position to one end position directing flow from the input to one of the outputs and to an opposite end position directing flow from the input to the other of the outputs. A valve actuator assembly has a sleeve fixed to the valve and having a rim annularly surrounding and spaced from the stem and lying in a plane generally parallel to the axis and a handle fixed to the stem above the rim and forming a guide extending substantially parallel to the stem. A latch element having an outwardly projecting arm is displaceable in the guide between a rest position with the arm engageable with the rim and blocking displacement of the stem into the one end position and an actuated position unengageable with the rim and permitting displacement of the stem into the one end position.
    Type: Grant
    Filed: January 12, 1999
    Date of Patent: March 14, 2000
    Assignee: Friedrich Grohe AG
    Inventors: Manfred Pawelzik, Wolfgang Gebhardt, Rainer Smieja
  • Patent number: 5896601
    Abstract: A mixing valve has a housing holding a fixed valve plate a flat outer surface generally centered on and perpendicular to an axis and formed offset from the axis with a pair of angularly offset and axially throughgoing inlet ports and offset therefrom with a pair of axially throughgoing outlet ports. Hot and cold water is supplied under pressure to the inlet ports and passages in the housing connect the outlet ports to respective users, e.g. a faucet and a shower. A movable valve plate in the housing has an inner surface flatly engaging the outer surface of the fixed valve plate and an opposite outer surface and is formed with an axially throughgoing inlet port alignable with the fixed-plate inlet ports and offset from the respective inlet port an axially throughgoing outlet port alignable with the fixed-plate outlet ports.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: April 27, 1999
    Assignee: Friedrich Grohe AG
    Inventors: Jurgen Humpert, Manfred Pawelzik
  • Patent number: 5775373
    Abstract: A diverter valve has a housing forming an inlet for pressurized fluid and a pair of separate outlets connectable to respective users. A valve disk fixed in the housing is centered on an axis and has to one side of a diameter through the axis two axially throughgoing outlet ports each communicating with a respective one of the outlets and to the other side of the diameter an axially throughgoing inlet port communicating with the inlet. The ports are spaced about the axis and centered on a circle itself centered on the axis. A valve disk sitting on the fixed valve disk is movable in the housing about the axis. This movable valve disk is formed with a pair of axially throughgoing holes spaced about the axis and centered on the circle.
    Type: Grant
    Filed: March 25, 1997
    Date of Patent: July 7, 1998
    Assignee: Friedrich Grohe AG
    Inventors: Manfred Pawelzik, Wolfgang Gebhardt
  • Patent number: 5755258
    Abstract: A valve assembly has a housing forming an outlet, having an axis, and secured on a support surface. A support block in the housing has a pair of inlet ports adapted to be connected to pressurized feed lines and an output port communicating with the outlet of the housing. A valve cartridge sitting on the support block includes a casing centered on the housing axis and having a rear end formed with axially rearwardly directed bumps and a stack of disks in the casing including an end disk formed with ports provided with seals projecting axially forward past the casing to the respective support-block ports and at least one valve disk displaceable to vary flow from the inlet ports to the outlet port. A stem projecting axially rearward from the casing is displaceable to move the valve disk.
    Type: Grant
    Filed: February 27, 1997
    Date of Patent: May 26, 1998
    Assignee: Friedrich Grohe AG
    Inventors: Manfred Pawelzik, Fred Hannemann
  • Patent number: 5558128
    Abstract: A plumbing fixture has a housing defining a chamber and having a bottom wall forming an upper surface and formed with at least one inlet port opening at the upper surface. A cartridge assembly in the chamber having a bottom surface directly confronting the bottom-wall upper surface is formed with an inlet port opening on the bottom surface in line with the bottom-wall inlet port. An inlet conduit having an end fitting extending through the inlet port and into the inlet port is formed with an outwardly open circumferential groove generally level with the surfaces. A split and spreadable snap ring fitted to the groove bears on the floor. One of the ports closely surrounds the snap ring and prevents it from spreading and a seal ring engages around the end fitting in the inlet port of the cartridge assembly.
    Type: Grant
    Filed: April 24, 1995
    Date of Patent: September 24, 1996
    Assignee: Friedrich Grohe Aktiengesellschaft
    Inventors: Manfred Pawelzik, Max Derr, Dieter Kahle
  • Patent number: 5199790
    Abstract: A temperature indicator for use in combination with a plumbing fitting through which water passes has a core assembly including a display, a circuit module fixed to and driving the display, a temperature sensor connected to the circuit module, a pair of long battery contacts connected to the module, a finger extending from the module and carrying the long contacts, and a pair of short battery contacts connected to the module in parallel with the long contacts. An inner housing part interfitting with the fitting and traversed by the water is formed with a recess in which the sensor is engageable. A battery is connected to one of the pairs of contacts and the other pair is unused. An outer housing part mounted on the inner housing part carries the core assembly. The finger is constructed to break readily off the assembly.
    Type: Grant
    Filed: June 4, 1992
    Date of Patent: April 6, 1993
    Assignee: Friedrich Grohe Aktiengesellschaft
    Inventors: Manfred Pawelzik, Heinz Brandebusemeyer
  • Patent number: 5190077
    Abstract: A switchover valve has a housing having an axis, a generally circular valve plate, and a generally circular control plate. The valve plate is fixed in the housing centered on the axis, has an inner face, and is formed with an outlet port and an inlet port both opening at the face. The ports are radially offset from the axis and angularly equispaced from each other. The control plate is rotatable about the axis in the housing, has an inner face flatly sealingly engaging the valve-plate face, and is formed offset from the axis with a crossflow pocket opening at the face. Thus the control plate is movable angularly about the axis between a crossflow position with the pocket overlying and forming a fluid-flow connection between the inlet port and the outlet port and a blocking position with the pocket wholly angularly offset from at least one of the ports and thereby preventing flow between the ports.
    Type: Grant
    Filed: October 25, 1991
    Date of Patent: March 2, 1993
    Assignee: Friedrich Grohe Armaturenfabrik GmbH & Co.
    Inventors: Manfred Pawelzik, Kerstin Polhaus
  • Patent number: 5172941
    Abstract: A snap-ring assembly has a sleeve formed with a bore centered on an axis and having an axially outwardly open end formed with a radially inwardly open groove, a pipe having a collar projecting axially inward into the bore end past the groove, a snap ring seated in the groove and projecting axially into the bore to block outward displacement of the collar, and a seal ring in the bore between the collar and the sleeve. The sleeve is formed at its open end with an axially outwardly open notch extending axially inward generally to the groove so that a tool can be inserted in the groove under the snap ring to remove same from the groove.
    Type: Grant
    Filed: October 1, 1991
    Date of Patent: December 22, 1992
    Assignee: Friedrich Grohe Aktiengesellschaft
    Inventors: Manfred Pawelzik, Friedhelm Weise
  • Patent number: 5148551
    Abstract: A valve assembly adapted for connection to separate hot- and cold-water supply pipes has a core centered on an axis and formed with a pair of input passages having output ends and diametrally oppositely opening input ends and with an output passage having an output end and an input end and respective substantially identical input fittings formed with respective fitting passages and fitted diametrally oppositely to the core with the fitting passages opening into the input ends of the input passages. Respective connections carried on the input fittings communicate with the respective fitting passages. These connections are connected to the respective hot- and cold-water supply pipes. At least one valve is fixed in the core covering the output ends of the input passages and the input end of the output passage for feeding hot and cold water from the respective input passages to the output passage. An output fitting is fixed to the core over the output end of the output passage.
    Type: Grant
    Filed: March 9, 1990
    Date of Patent: September 22, 1992
    Assignee: Friedrich Grohe Armaturenfabrik GmbH + Co.
    Inventors: Jurgen Humpert, Manfred Pawelzik
  • Patent number: 5060692
    Abstract: A seal ring is used in combination with a pair of substantially planar, confronting, and substantially parallel faces one of which is formed with an annular groove surrounding a pressurizable chamber and having inner and outer flanks extending transverse to the respective plate face. These faces are relatively slidable and can be formed on a valve plate and a control plate of a single-control valve. The ring is formed with an outer edge normally engaging outward against the outer flank of the groove, an inwardly projecting ridge defining an inner edge normally engaging inward against the inner flank of the groove, and a pair of lips flanking the ridge and each defining therewith an inwardly open groove. Each lip has an outer end lying outward of the inner edge and inward of the outer edge.
    Type: Grant
    Filed: November 7, 1990
    Date of Patent: October 29, 1991
    Assignee: Friedrich Grohe Armaturenfabrik GmbH & Co.
    Inventors: Manfred Pawelzik, Horst Titze
  • Patent number: 5056562
    Abstract: A plumbing fitting has a flexible hose suppliable with water under pressure and having an outer end, an upstream end piece having an upstream side connected to the outer end and a downstream side, and a downstream end piece having a downstream side and an upstream side. An outer sleeve has an upstream end and a downstream end and respective couplings releasably connect the upstream end of the sleeve to the downstream side of the upstream end piece and the downstream end of the sleeve to the upstream side of the downstream end piece. An inner tube having a downstream end connected to the upstream side of the downstream end piece and an upstream end connected to the downstream side of the upstream end piece forms a flow conduit therebetween. Seals are provided at the ends of the tube between same and the respective sides of the end pieces.
    Type: Grant
    Filed: March 9, 1990
    Date of Patent: October 15, 1991
    Assignee: Friedrich Grohe Armaturenfabrik GmbH & Co.
    Inventors: Manfred Pawelzik, Rudolf Haufe
  • Patent number: 5014749
    Abstract: A valve assembly comprises a valve body having an nonplanar outer surface and formed with a threaded seat opening at the surface and with a passage opening into the seat. A valve in the body supplies water through the passage to the seat and a metallic tube having a threaded inner end engaged tightly in the seat forms an extension of the passage. A decorative sleeve engaged concentrically around the tube has an inner end shaped to fit flush against the body outer surface. A retaining device is engaged between the outer end of the tube and the outer end of the sleeve for pressing the inner end of the sleeve against the body outer surface. The retainer for the tube includes a snap ring fitted to the outer end of the tube and an elastomeric washer engaged between the snap ring and the tube outer end.
    Type: Grant
    Filed: March 9, 1990
    Date of Patent: May 14, 1991
    Assignee: Friedrich Grohe Armaturenfabrik GmbH & Co.
    Inventors: Jurgen Humpert, Manfred Pawelzik
  • Patent number: 4997005
    Abstract: A mixing valve comprises a housing centered on a housing axis, a base plate formed with an outlet port bisected by a symmetry plane including the housing axis and a pair of arcuate inlet ports offset from the outlet port and symmetrically flanking the plane. The ports open on the base plate at a planar front surface perpendicular to the axis and plane. A control plate has a back surface lying on the base-plate front surface and is formed with a cavity opening at the back surface at a rim. A lever is mounted on the housing and control plate for moving the control plate parallel to the symmetry plane from a closed position with the cavity over the outlet but not over either of the inlets to an open position with the cavity over the outlet port and at least one of the inlet ports and transverse to the symmetry plane to vary the coverage of the inlet ports while still being over the outlet port.
    Type: Grant
    Filed: January 22, 1990
    Date of Patent: March 5, 1991
    Assignee: Friedrich Grohe Armaturenfabrik GmbH & Co.
    Inventors: Manfred Pawelzik, Horst Titze
  • Patent number: 4995419
    Abstract: A single-control mixing valve comprises a housing generally centered on an axis and having an open end, a base plate closing the open end, formed with inlet and outlet passages, and formed around the passages with grooves, respective seals seated in the grooves, a control plate formed with a crossflow cavity and displaceable in the housing to interconnect the passages of the base plate, and a lever pivoted on the control plate for displacing same. The base plate is secured in the housing for only limited axial movement therein by inwardly deflectable barbs and formations pinch the seals in the grooves so that the valve is a self-contained units whose parts cannot become accidentally separted before it is installed.
    Type: Grant
    Filed: January 22, 1990
    Date of Patent: February 26, 1991
    Assignee: Friedrich Grohe Armaturenfabrik GmbH & Co.
    Inventors: Manfred Pawelzik, Horst Titze