Patents by Inventor Stefan Ritsche

Stefan Ritsche 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: 6578741
    Abstract: In a dispenser, particularly an atomizer, which is used for flowable substances, particularly pharmaceuticals, use is made of a pump, which must be actuated one or more times for priming purposes. Its discharge nozzle (14) is covered by a protective cap (38), which is suitable to collect and store the medium, which is discharged during the priming strokes and before the start of the useful strokes. During the priming strokes the protective cap (38) is secured on the dispenser (11). This is brought about in that a locking (40) for the protective cap is only released when the priming strokes have been performed. This can take place by electrical actuation or by material change under the influence of the medium to be discharged. According to a variant the protective cap is not itself locked, but an actuation locking takes place if the protective cap has not been fitted for the priming strokes.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: June 17, 2003
    Assignee: Ing. Erich Pfeiffer GmbH
    Inventors: Stefan Ritsche, Juergen Greiner-Perth
  • Patent number: 6527144
    Abstract: The invention relates to a discharge apparatus for media. Corresponding media discharge apparatuses are e.g. generally known in the form of pump atomizers. The problem of the invention is to create a greater freedom of design for the actuation of such discharge apparatuses. This problem is solved in that the actuation direction of the actuating element of the discharge apparatus differs from the stroke direction of the pump element of the discharge apparatus.
    Type: Grant
    Filed: July 5, 2001
    Date of Patent: March 4, 2003
    Assignee: Ing. Erich Pfeiffer GmbH
    Inventors: Stefan Ritsche, Andreas Graf, Juergen Greiner-Perth
  • Publication number: 20030010793
    Abstract: A child-proof dispending and/or closing device which includes a dosing head that can be operated for a dispending operation, and a carrier unit which is associated with the dosing head and which can be fastened to an outlet area of a storage container for the medium. The dosing head is held in at least one inactive blocking position with the help of at least one manually releasable locking means. According to the invention, two parts of the carrier unit have tooth systems corresponding with one another, which tooth systems are held in disengagement from one another by hold-back means and can be moved temporarily into engagement with one another against the hold-back force of the hold-back means for the purpose of releasing the one part from the storage container.
    Type: Application
    Filed: July 10, 2002
    Publication date: January 16, 2003
    Inventor: Stefan Ritsche
  • Publication number: 20020190083
    Abstract: A dispenser (1) is provided for unlocking the stroke with two first and second handles (44, 45) configured separate from the actuator handle (5) for actuating the pump stroke. For unlocking, the first handle (44) firstly needs to be actuated in a first release direction (46). Thereafter only an actuation in a second release direction (47) is possible with the second handle (45). It is not until after this second actuation that an unlocked position is attained, which permits implementation of the pump stroke. For the second motion (47) a restrain drag (43) is furthermore provided which can only be defeated by increasing the associated actuating force.
    Type: Application
    Filed: February 16, 2001
    Publication date: December 19, 2002
    Inventor: Stefan Ritsche
  • Patent number: 6484715
    Abstract: A dispenser (1) has two remote pressure handles (29, 35) and lateral gripping recesses (58) for mutually displacing two units (2, 3) axially and rotationally. A tear-off web (52) prevents the two units (2, 3) from being actuated accidentally. A discharge stud (34) protrudes beyond the handles (29, 35, 58). The dispenser (1) is so small that it may be fully enveloped and covered by one user's hand. Nevertheless reliable actuation for nasal application is assured.
    Type: Grant
    Filed: July 12, 1999
    Date of Patent: November 26, 2002
    Assignee: Ing. Erich Pfeiffer GmbH
    Inventors: Stefan Ritsche, Stefan Käfer
  • Patent number: 6461322
    Abstract: The nasal dispenser (1) consists of but two integral housing bodies (4, 5) for accommodating a medium blister (6). Bodies (4, 5) are interlocked by withdrawal prevention means against separation and by releasable blocking means (49) against actuation. The medium reservoir (7) is located freely in an innermost housing space (62) of the first housing body (4). Thus the dispenser (1) is highly compact, simple in configuration and permits facilitated handling.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: October 8, 2002
    Assignee: Ing. Erich Pfeiffer GmbH
    Inventor: Stefan Ritsche
  • Patent number: 6446839
    Abstract: The invention relates to a dispenser for the discharge and the atomizing of media, in which a liquid medium is discharged in one charge or a small number of partial charges in one operating stroke of an operating presser or trigger. The dispenser is secured against accidental operation and has a minimum packing or storage volume. Prior to each stroke, the operating presser is returned from an operating end portion to the operating starting position to commence the discharge stroke.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: September 10, 2002
    Assignee: Ing. Erich Pfeiffer GmbH
    Inventor: Stefan Ritsche
  • Patent number: 6427684
    Abstract: The problem of the invention is to so further develop a discharge apparatus according to the preamble that it is possible during each individual actuating stroke to reliably discharge a predetermined volume of medium. A discharge apparatus for media according to the invention has a casing, on which is located an actuator. During each actuator actuation an actuating stroke takes place and consequently a given volume of the medium stored in the casing is discharged. According to the invention the gravity dependently operating blocking means are constructed in such a way that they can block the performance of an actuating stroke as a function of the spatial position of the discharge apparatus.
    Type: Grant
    Filed: February 9, 2001
    Date of Patent: August 6, 2002
    Assignee: Ing. Erich Pfeiffer GmbH
    Inventors: Stefan Ritsche, Karl-Heinz Fuchs
  • Publication number: 20020066752
    Abstract: In a dispenser, particularly an atomizer, which is used for flowable substances, particularly pharmaceuticals, use is made of a pump, which must be actuated one or more times for priming purposes. Its discharge nozzle (14) is covered by a protective cap (38), which is suitable to collect and store the medium, which is discharged during the priming strokes and before the start of the useful strokes. During the priming strokes the protective cap (38) is secured on the dispenser (11). This is brought about in that a locking (40) for the protective cap is only released when the priming strokes have been performed. This can take place by electrical actuation or by material change under the influence of the medium to be discharged. According to a variant the protective cap is not itself locked, but an actuation locking takes place if the protective cap has not been fitted for the priming strokes.
    Type: Application
    Filed: October 11, 2001
    Publication date: June 6, 2002
    Inventors: Stefan Ritsche, Juergen Greiner-Perth
  • Patent number: 6364166
    Abstract: For the discharge, particularly atomization of media, particularly liquid medicaments, a dispenser (11) is provided, which discharges a charge of the medicament in only one or optionally a few strokes. Actuation takes place between three fingers of the user, the thumb pressing an actuating pusher (80) in the actuating and discharge direction. In order to prevent an unintentional actuation and simultaneously protect the discharge opening (44) against dirtying and contamination, a protective cap (90) is provided, which covers the entire discharge section (13) and the holding surfaces (14) for actuation. It also has web-like projections (93) extending up to the actuating pusher (80) and securing the latter, which prevents an actuation when the protective cap is fitted. However, actuation is possible after removing the protective cap, which is secured by a snap connection.
    Type: Grant
    Filed: August 10, 2000
    Date of Patent: April 2, 2002
    Assignee: Ing. Erich Pfeiffer GmbH
    Inventors: Stefan Ritsche, Gottfried Fuchs, Christa Wohriska
  • Publication number: 20020032409
    Abstract: The invention relates to a dispenser for dischargeable media, preferably containing at least one active pharmaceutical substance and packed in portioned manner in storage chambers of a storage means, as well as a conveying device for the supply of the storage means.
    Type: Application
    Filed: May 7, 2001
    Publication date: March 14, 2002
    Inventor: Stefan Ritsche
  • Publication number: 20020008122
    Abstract: The invention relates to a discharge apparatus for media. Corresponding media discharge apparatuses are e.g. generally known in the form of pump atomizers.
    Type: Application
    Filed: July 5, 2001
    Publication date: January 24, 2002
    Inventors: Stefan Ritsche, Andreas Graf, Juergen Greiner-Perth
  • Publication number: 20010013525
    Abstract: The problem of the invention is to so further develop a discharge apparatus according to the preamble that it is possible during each individual actuating stroke to reliably discharge a predetermined volume of medium.
    Type: Application
    Filed: February 9, 2001
    Publication date: August 16, 2001
    Inventors: Stefan Ritsche, Karl-Heinz Fuchs
  • Publication number: 20010007327
    Abstract: A dispenser (1) comprises a reservoir (7) and a plunger pump (8), the medium inlet (3) of which pierces a closure (45) of the reservoir (7), after which the medium can be discharged metered from the reservoir (7) by repeated strokes with the pump (8). Until used the medium thus remains hermetically sealed.
    Type: Application
    Filed: March 12, 2001
    Publication date: July 12, 2001
    Inventors: Stefan Ritsche, Juergen Greiner-Perth
  • Patent number: 6257454
    Abstract: The outlet (12) of a dispenser reservoir (8) is sealingly closed by a transverse catch member (21) which also positively prevents the dispenser (1) from being actuated. Pulling out the catch member (21) opens the reservoir (8) and releases the discharge actuator (37). Thus the piston (14) opposing the reservoir outlet (12) can enter. The materials of the reservoir (8) and reservoir seal (30) are paired in glass, tetrafluoroethylene or the like. Thus even sensitive media may be stored in the dispenser (1) over lengthy periods without risking any change in the substances.
    Type: Grant
    Filed: April 28, 1999
    Date of Patent: July 10, 2001
    Assignee: Ing. Erich Pfeiffer GmbH
    Inventor: Stefan Ritsche
  • Patent number: 6227415
    Abstract: An inlet valve (10) of a dispenser (1) or thrust piston pump, for highly reliable and speedy valve function in all vertical or inclined positions of the dispenser (1) includes, nearer to the pump chamber (20), a valve ball (35) operating in response to pressure and, further away from the pump chamber (20), a valve ball (36) subject to the force of gravity. Ball (36) pushes ball (35) out of its seat (33) in the event that it is firmly seated in the seat (33) due to a vacuum in the reservoir (9) when the dispenser (1) is turned upside down. The seats (33, 34) for the two valve balls (35, 36) are formed by a radially deformable wall (54), which can be tightly and sealingly supported against balls (35, 36).
    Type: Grant
    Filed: June 17, 1998
    Date of Patent: May 8, 2001
    Assignee: Ing. Erich Pfeiffer GmbH
    Inventors: Stefan Ritsche, Esther Amann
  • Patent number: 6109547
    Abstract: A dispenser head (2) includes a pivotable discharge stud (17). The outlet duct (15) thereof is bounded by an inner body (22) and is located laterally adjacent to the stud axis (11). Thereby the medium may be discharged in atomized form while being multiply deflected.
    Type: Grant
    Filed: December 16, 1998
    Date of Patent: August 29, 2000
    Assignee: Ing. Erich Pfeiffer GmbH
    Inventor: Stefan Ritsche
  • Patent number: 5950879
    Abstract: A dispenser for discharging media, comprising: a dispenser base; a discharge deliverer for forcing the media out of the dispenser; an actuator including a discharge actuator for activating the discharge deliverer between a rest position and an actuated end position remote from the rest position; an outlet duct for the medium; a medium outlet connected to the outlet duct for discharging the media out of the dispenser; a media reservoir bounding a reservoir space and including a reservoir closure for closing the reservoir space; each of the dispenser base, discharge deliverer, actuator, outlet duct, medium outlet and media reservoir forming constituent elements of a preassembled assembly; the assembly having a filling duct for filling a filling medium from outside the dispenser into the reservoir space, the filling duct communicating with the reservoir space as the media reservoir is preassembled with the discharge deliverer; and, a bounding wall projecting toward the reservoir space close to the media reservoi
    Type: Grant
    Filed: October 24, 1995
    Date of Patent: September 14, 1999
    Assignee: Ing. Erich Pfeiffer GmbH
    Inventor: Stefan Ritsche
  • Patent number: D414261
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: September 21, 1999
    Assignee: Ing. Erich Pfeiffer GmbH
    Inventor: Stefan Ritsche
  • Patent number: D414555
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: September 28, 1999
    Assignee: Ing. Erich Pfeiffer GmbH
    Inventor: Stefan Ritsche