Patents by Inventor Margaret A. Hartfel

Margaret A. Hartfel 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: 9211553
    Abstract: Apparatus and methods for spraying a liquid relating to a gravity-fed spray gun are disclosed. Disclosed gravity fed spray guns may comprise a body and an attachment point located at a top portion of the body; and a spray nozzle located at a front portion of the body. An apparatus may further comprise a fluid reservoir configured to contain a fluid to be sprayed through the spray nozzle, the fluid reservoir comprising a container comprising an open end; a lid for cooperative engagement with the open end of the container, the lid comprising a connector to couple the fluid reservoir to the attachment point of the spray gun and an aperture through which the fluid can flow from the fluid reservoir to the spray nozzle in use; and a filter positioned to filter the fluid before reaching the spray nozzle.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: December 15, 2015
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Stephen C. P. Joseph, Malcolm F. Douglas, Alan F. Butler, David R. Bastow, Jerome E. Salhus, Margaret A. Hartfel
  • Publication number: 20150090614
    Abstract: Apparatus and methods for spraying a liquid relating to a gravity-fed spray gun are disclosed. Disclosed gravity fed spray guns may comprise a body and an attachment point located at a top portion of the body; and a spray nozzle located at a front portion of the body. An apparatus may further comprise a fluid reservoir configured to contain a fluid to be sprayed through the spray nozzle, the fluid reservoir comprising a container comprising an open end; a lid for cooperative engagement with the open end of the container, the lid comprising a connector to couple the fluid reservoir to the attachment point of the spray gun and an aperture through which the fluid can flow from the fluid reservoir to the spray nozzle in use; and a filter positioned to filter the fluid before reaching the spray nozzle.
    Type: Application
    Filed: November 26, 2014
    Publication date: April 2, 2015
    Inventors: Stephen C.P. Joseph, Malcolm F. Douglas, Alan F. Butler, David R. Bastow, Jerome E. Salhus, Margaret A. Hartfel
  • Patent number: 8955770
    Abstract: Apparatus and methods for spraying a liquid relating to a gravity-fed spray gun are disclosed. Disclosed gravity fed spray guns may comprise a body and an attachment point located at a top portion of the body; and a spray nozzle located at a front portion of the body. An apparatus may further comprise a fluid reservoir configured to contain a fluid to be sprayed through the spray nozzle, the fluid reservoir comprising a container comprising an open end; a lid for cooperative engagement with the open end of the container, the lid comprising a connector to couple the fluid reservoir to the attachment point of the spray gun and an aperture through which the fluid can flow from the fluid reservoir to the spray nozzle in use; and a filter positioned to filter the fluid before reaching the spray nozzle.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: February 17, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: Stephen C. P. Joseph, Malcolm F. Douglas, Alan F. Butler, David R. Bastow, Jerome E. Salhus, Margaret A. Hartfel
  • Patent number: 8628026
    Abstract: A spray gun (1) has a fluid reservoir (11) with a removable liner (13) received in a container (12) having a detachable lid (15). The liner (13), which may be thermo/vacuum-formed from a planar material, has a shape that corresponds to and is a close fit within the interior of the container (12) and collapses as fluid is withdrawn from within the liner (13) during operation of the spray gun (1). The lid (15) has an outlet (16) connected to an inlet on the spray gun (1) for transfer of liquid from the reservoir (11) to the spray gun (1) and the container (12) has a vent (12A) in the base end for admitting air between the container (12) and the liner (13) as liquid is withdrawn from within the liner (13).
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: January 14, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Stephen C. P. Joseph, Malcolm F. Douglas, Alan F. Butler, David R. Bastow, Jerry E. Salhus, Margaret A. Hartfel
  • Publication number: 20130256424
    Abstract: Apparatus and methods for spraying a liquid relating to a gravity-fed spray gun are disclosed. Disclosed gravity fed spray guns may comprise a body and an attachment point located at a top portion of the body; and a spray nozzle located at a front portion of the body. An apparatus may further comprise a fluid reservoir configured to contain a fluid to be sprayed through the spray nozzle, the fluid reservoir comprising a container comprising an open end; a lid for cooperative engagement with the open end of the container, the lid comprising a connector to couple the fluid reservoir to the attachment point of the spray gun and an aperture through which the fluid can flow from the fluid reservoir to the spray nozzle in use; and a filter positioned to filter the fluid before reaching the spray nozzle.
    Type: Application
    Filed: May 24, 2013
    Publication date: October 3, 2013
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Stephen C.P. Joseph, Malcolm F. Douglas, Alan F. Butler, David R. Bastow, Jerome E. Salhus, Margaret A. Hartfel
  • Patent number: 8424780
    Abstract: A spray gun is disclosed, including components and kits of components thereof, comprising a body comprising an attachment point for a compatible liquid reservoir and an adapter. The adapter comprises, at a first end, a non-threaded connection for attachment to a connector of a compatible liquid reservoir, the adapter being attached at a second end to the attachment point on the body such that the adapter remains attached to the body upon removal of a compatible liquid reservoir from the non-threaded connection.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: April 23, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Stephen C. P. Joseph, Malcolm F. Douglas, Alan F. Butler, David R. Bastow, Jerry E. Salhus, Margaret A. Hartfel
  • Publication number: 20120256010
    Abstract: A spray gun is disclosed, including components and kits of components thereof, comprising a body comprising an attachment point for a compatible liquid reservoir and an adapter. The adapter comprises, at a first end, a non-threaded connection for attachment to a connector of a compatible liquid reservoir, the adapter being attached at a second end to the attachment point on the body such that the adapter remains attached to the body upon removal of a compatible liquid reservoir from the non-threaded connection.
    Type: Application
    Filed: June 21, 2012
    Publication date: October 11, 2012
    Inventors: Stephen C. P. Joseph, Malcolm F. Douglas, Alan F. Butler, David R. Bastow, Jerry E. Salhus, Margaret A. Hartfel
  • Publication number: 20110266368
    Abstract: A spray gun (1) has a fluid reservoir (11) with a removable liner (13) received in a container (12) having a detachable lid (15). The liner (13), which may be thermo/vacuum-formed from a planar material, has a shape that corresponds to and is a close fit within the interior of the container (12) and collapses as fluid is withdrawn from within the liner (13) during operation of the spray gun (1). The lid (15) has an outlet (16) connected to an inlet on the spray gun (1) for transfer of liquid from the reservoir (11) to the spray gun (1) and the container (12) has a vent (12A) in the base end for admitting air between the container (12) and the liner (13) as liquid is withdrawn from within the liner (13).
    Type: Application
    Filed: July 12, 2011
    Publication date: November 3, 2011
    Inventors: Stephen C. P. Joseph, Malcolm F. Douglas, Alan F. Butler, David R. Bastow, Jerry E. Salhus, Margaret A. Hartfel
  • Patent number: 8002200
    Abstract: A spray gun (1) has a fluid reservoir (11) with a removable liner (13) received in a container (12) having a detachable lid (15). The liner (13), which may be thermo/vacuum-formed from a planar material, has a shape that corresponds to and is a close fit within the interior of the container (12) and collapses as fluid is withdrawn from within the liner (13) during operation of the spray gun (1). The lid (15) has an outlet (16) connected to an inlet on the spray gun (1) for transfer of liquid from the reservoir (11) to the spray gun (1) and the container (12) has a vent (12A) in the base end for admitting air between the container (12) and the liner (13) as liquid is withdrawn from within the liner (13).
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: August 23, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Stephen C.P. Joseph, Malcolm F. Douglas, Alan F. Butler, David R. Bastow, Jerry E. Salhus, Margaret A. Hartfel
  • Patent number: 7798421
    Abstract: A spray gun (1) has a fluid reservoir (11) with a removable liner (13) received in a container (12) having a detachable lid (15). The liner (13), which may be thermo/vacuum-formed from a planar material, has a shape that corresponds to and is a close fit within the interior of the container (12) and collapses as fluid is withdrawn from within the liner (13) during operation of the spray gun (1). The lid (15) has an outlet (16) connected to an inlet on the spray gun (1) for transfer of liquid from the reservoir (11) to the spray gun (1) and the container (12) has a vent (12A) in the base end for admitting air between the container (12) and the liner (13) as liquid is withdrawn from within the liner (13).
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: September 21, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Stephen C. P. Joseph, Malcolm F. Douglas, Alan F. Butler, David R. Bastow, Jerry E. Salhus, Margaret A. Hartfel
  • Publication number: 20090166443
    Abstract: A spray gun (1) has a fluid reservoir (11) with a removable liner (13) received in a container (12) having a detachable lid (15). The liner (13), which may be thermo/vacuum-formed from a planar material, has a shape that corresponds to and is a close fit within the interior of the container (12) and collapses as fluid is withdrawn from within the liner (13) during operation of the spray gun (1). The lid (15) has an outlet (16) connected to an inlet on the spray gun (1) for transfer of liquid from the reservoir (11) to the spray gun (1) and the container (12) has a vent (12A) in the base end for admitting air between the container (12) and the liner (13) as liquid is withdrawn from within the liner (13).
    Type: Application
    Filed: March 11, 2009
    Publication date: July 2, 2009
    Inventors: Stephen C.P. Joseph, Malcolm F. Douglas, Alan F. Butler, David R. Bastow, Jerry E. Salhus, Margaret A. Hartfel
  • Publication number: 20080054087
    Abstract: A spray gun (1) has a fluid reservoir (11) with a removable liner (13) received in a container (12) having a detachable lid (15). The liner (13), which may be thermo/vacuum-formed from a planar material, has a shape that corresponds to and is a close fit within the interior of the container (12) and collapses as fluid is withdrawn from within the liner (13) during operation of the spray gun (1). The lid (15) has an outlet (16) connected to an inlet on the spray gun (1) for transfer of liquid from the reservoir (11) to the spray gun (1) and the container (12) has a vent (12A) in the base end for admitting air between the container (12) and the liner (13) as liquid is withdrawn from within the liner (13).
    Type: Application
    Filed: October 31, 2007
    Publication date: March 6, 2008
    Inventors: STEPHEN JOSEPH, Malcolm Douglas, Alan Butler, David Bastow, Jerry Salhus, Margaret Hartfel
  • Publication number: 20070299708
    Abstract: Systems, methods, and tools are provided for analysis of one or more fields of interest for use, for example, in making decisions and/or allocating resources. For example, a field of interest involving a technology platform may be analyzed to allocate research and development resources, value potential acquisitions, etc. One or more analysis tools such as data recordation structures may be employed.
    Type: Application
    Filed: June 21, 2006
    Publication date: December 27, 2007
    Inventors: Andrew J. Ouderkirk, Robert R. Kieschke, Michelle M. Bellanca, Margaret A. Hartfel
  • Publication number: 20060157589
    Abstract: A spray gun (1) has a fluid reservoir (11) with a removable liner (13) received in a container (12) having a detachable lid (15). The liner (13), which may be thermo/vacuum-formed from a planar material, has a shape that corresponds to and is a close fit within the interior of the container (12) and collapses as fluid is withdrawn from within the liner (13) during operation of the spray gun (1). The lid (15) has an outlet (16) connected to an inlet on the spray gun (1) for transfer of liquid from the reservoir (11) to the spray gun (1) and the container (12) has a vent (12A) in the base end for admitting air between the container (12) and the liner (13) as liquid is withdrawn from within the liner (13).
    Type: Application
    Filed: March 23, 2006
    Publication date: July 20, 2006
    Inventors: Stephen Joseph, Malcolm Douglas, Alan Butler, David Bastow, Jerry Salhus, Margaret Hartfel
  • Patent number: 6820824
    Abstract: A spray gun has a fluid reservoir that contains a removable liner. The liner, which may be thermo/vacuum-formed from a plastics material, is a close fit within the interior of the reservoir and collapses as fluid is withdrawn from within the liner during operation of the gun. Preferably, the liner has a comparatively-rigid base and is capable of standing, unsupported, outside the reservoir. The side walls of the liner are preferably thin in comparison to the base and can be collapsed for disposal of the liner. The reservoir has a removable lid and is capable of standing, inverted, on its own so that it can be filled with fluid. The lid also functions to secure the liner in the reservoir and, at the end of a spraying operation, the lid and the liner are removed together from the reservoir and discarded, thereby simplifying the cleaning of the spray gun.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: November 23, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Stephen C. P. Joseph, Malcolm F. Douglas, Alan F. Butler, David R. Bastow, Jerry E. Salhus, Margaret A. Hartfel
  • Patent number: 5491015
    Abstract: A slip control sheeting can comprise a backing having a first and a second major surface and an array of protrusions on the first major surface. The protrusions can be pyramids with polygonal bases or pyramidal frustums with polygonal bases. Alternatively, the protrusions can comprise posts having non-planar sides and bases on the first major surface wherein the posts taper radially inwardly from their bases to their tops, e.g., cones or conical frustums with circular bases. The sheeting can further comprise at least one of a layer of adhesive on the second major surface, a reinforcing web, or a mechanical fastening component for fastening the backing to a substrate. The sheeting can be made so that it retroreflects less than about 10 percent of a beam of electromagnetic radiation which is incident at any angle to the second major surface, the electromagnetic radiation having any wavelength from about 0.39 microns to about 1,000 microns.
    Type: Grant
    Filed: August 13, 1992
    Date of Patent: February 13, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mark E. Reeves, Margaret A. Hartfel, Forrest J. Rouser, Kenneth L. Smith, Olester Benson, Jr.
  • Patent number: 5234740
    Abstract: A slip control sheeting comprising a backing having first and second major surfaces with an array of protrusions on the first major surface and at least one of (1) a layer of adhesive on the second major surface and (2) a reinforcing web at least partially embedded in the backing. The protrusions are pyramids with triangular bases having a height between about 3 and 21 mils and the array is defined in part by a pattern of three intersecting sets of parallel grooves formed in the first major surface, the grooves defining three major axes of the sheeting.
    Type: Grant
    Filed: August 28, 1991
    Date of Patent: August 10, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mark E. Reeves, Margaret A. Hartfel, Forrest J. Rouser, Kenneth L. Smith