Patents by Inventor John R. Calvert

John R. Calvert 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: 5896855
    Abstract: An inhaler for inhalation of a medicament from a pierced capsule has a swirling or emptying chamber where the capsule is emptied by inhalation action of an operator. A rotary magazine for a multi-unit does inhaler which holds a number of capsules containing a medicament in a number of recesses arranged around the periphery of the magazine. The capsules are held in place by pins or plugs at both ends. Either the capsules are pierced before being loaded into the magazine or they are pierced by the pins when they are loaded into the magazine. In either case a seal may be provided around the ends of the capsules near the holes which are plugged to keep them fresh. When a recess is rotated to a particular position within the magazine then it releases its capsule. Contents of a capsule are drawn out during inhalation when the capsule is in the swirling chamber. A motor can be used to operate the magazine.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: April 27, 1999
    Assignee: Rhone-Poulenc Rorer Limited
    Inventors: Michael A. Hobbs, John R. Calvert, Robert S. Cook, Roy Trunley, Gordon T. Simpkin
  • Patent number: 5522383
    Abstract: An inhaler for inhaling pulverulent medicament from within a capsule comprises a chamber (24) within which the capsule is free to rotate while having its longitudinal axis in the median plane of the chamber and thus generally parallel to the front and rear walls (30) and (31) of the chamber, by virtue of the fact that the spacing between said front and rear walls is less than the axial length of the capsule but just greater than the diameter of the capsule. The device includes pins (21) serving as opening means to pierce the ends of the capsule while it is seated in a recess (25), whereupon the retraction of the pins (21) allows the capsule to be entrained into swirling airflow in the chamber (24) during inhalation of air through air inlets (26) and out through a mouthpiece nozzle (27).
    Type: Grant
    Filed: February 16, 1993
    Date of Patent: June 4, 1996
    Assignee: Rhone-Poulenc Rorer Ltd.
    Inventors: John R. Calvert, Robert S. Cook, Michael A. Hobbs, Ann-Marie Leighton, Gordon T. Simpkin, Roy Trunley, Anthony D. West
  • Patent number: 4905861
    Abstract: A lidded container made of plastics material comprises a body (10) with a top rim (11) and a lid (12) with a flange (18) for sealing engagement inside the rim (11). The lid (12) has a web (17) part carrying said flange (18), which depends therefrom, and also carrying a depending skirt (16) for surrounding the outside of the rim (11), said skirt (16) having a plurality of inwardly-directed projections (21) each engageable in latching relationship in a recess (31) on the outside of the rim (11), and said web part (17) having apertures (24) corresponding to said projections (21), whereby a tool can be inserted through each aperture (24) to disengage the corresponding projection (21) from said recess (31).
    Type: Grant
    Filed: February 2, 1989
    Date of Patent: March 6, 1990
    Assignee: Reed Packaging Limited
    Inventors: Charles W. Boxall, John R. Calvert, Brian Edwards, Martyn O. Rowlands, Christopher H. Sworn
  • Patent number: D303334
    Type: Grant
    Filed: December 23, 1986
    Date of Patent: September 12, 1989
    Assignee: Avent Medical Limited
    Inventor: John R. Calvert