Patents by Inventor Simon D. Ladd

Simon D. Ladd 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: 6464745
    Abstract: A minipleat synthetic filter assembly is provided. The filter assembly includes a frame assembly and a section of pleated filter media mounted within the frame assembly. The frame assembly includes a plurality of corner members and an equal plurality of side members interconnecting the corner members. The frame assembly may be made in any desired size and shape to accommodate a wide variety of applications. The section of filter media is a sheet of a synthetic nonwoven material folded to form minipleats having a spacing between adjacent peaks of no greater than 20 mm.
    Type: Grant
    Filed: January 26, 2001
    Date of Patent: October 15, 2002
    Assignee: Freudenberg Nonwovens Limited Partnership
    Inventors: Samuel Rivera, Simon D. Ladd, Michelle Pritzkau, Kent Mertz, Markus Schmitt
  • Patent number: 6447566
    Abstract: A filtration system has a main filter assembly having a frame and filter media comprising pleated sections arranged in a row in V shapes within the frame. The filter media is spaced from an upstream face of the frame a distance sufficient to prevent blinding of the filter media by an upstream filter media, thereby eliminating a filtration stage and reducing the volume of the filtration system. Filter media alignment members disposed within the frame assist in holding the filter media sections in alignment within the frame. In another embodiment, flexible strips of edge banding, preferably of a filter material, are affixed to adjacent upper and lower longitudinal edges of the sections of the filter media. The edge banding minimizes pressure drop across the filter and is simpler and less costly to manufacture.
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: September 10, 2002
    Assignee: Freudenberg Nonwovens Limited Partnership
    Inventors: Samuel Rivera, Simon D. Ladd
  • Publication number: 20020100264
    Abstract: A minipleat synthetic filter assembly is provided. The filter assembly includes a frame assembly and a section of pleated filter media mounted within the frame assembly. The frame assembly includes a plurality of corner members and an equal plurality of side members interconnecting the corner members. The frame assembly may be made in any desired size and shape to accommodate a wide variety of applications. The section of filter media is a sheet of a synthetic nonwoven material folded to form minipleats having a spacing between adjacent peaks of no greater than 20 mm.
    Type: Application
    Filed: January 26, 2001
    Publication date: August 1, 2002
    Applicant: FREUDENBERG NONWOVENS LIMITED PARTNERSHIP
    Inventors: Samuel Rivera, Simon D. Ladd, Michelle Pritzkau, Kent Mertz, Markus Schmitt
  • Publication number: 20010037973
    Abstract: A panel filter assembly is provided having an frame integral with a layer of filter media. The frame comprises a peripheral member disposed proximate the perimeter of the sheet of the filter media. The peripheral member is formed of a hard or rigid plastic material and comprises an upstanding portion extending away from a first side of the sheet and a portion penetrating through pores in the sheet to an opposite side of the sheet.
    Type: Application
    Filed: April 24, 2001
    Publication date: November 8, 2001
    Inventors: Samuel Rivera, Simon D. Ladd