Patents by Inventor David M. Castiglione
David M. Castiglione 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).
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Publication number: 20110220115Abstract: A respirator 10 that includes a harness 12 and a mask body 14. The harness 12 has one or more straps 21 and a head cradle 16 that is joined to the one or more straps 21 and that includes first and second laterally-extending members 18, 20 and a latch 26. The latch 26 is able to secure the laterally-extending members 18, 20 in a spaced apart first open position to allow for placement on a person's head and is able to disengage so that the members 18, 20 can move to a second collapsed position to allow for off-the-face storage. The harness is beneficial in that it can be quickly removed from the wearer's head and can be conveniently disposed behind the wearer's neck when the wearer wants to temporarily displace the mask body from their face.Type: ApplicationFiled: March 10, 2010Publication date: September 15, 2011Inventors: David M. Castiglione, William A. Mittelstadt, Thomas W. Holmquist-Brown
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Patent number: 7849856Abstract: A unidirectional valve, wherein the valve comprises a valve body including a frame, a valve opening through the frame, and a valve seat extending from the frame and at least partially surrounding the valve opening. The valve further includes a valve flap having a first portion attached to the frame and an adjacent second portion free to move from a first position where the second portion is in contact with at least a part of the valve seat to a second position where at least part of the second portion is spaced from the valve seat, wherein the valve flap has a contour profile. The contoured profile may be along the length of the valve flap, between the point of attachment of the flap to the frame and the flap end, or from one flap side edge to a second side edge.Type: GrantFiled: June 25, 2001Date of Patent: December 14, 2010Assignee: 3M Innovative Properties CompanyInventors: William A. Mittelstadt, David M. Castiglione, Thomas I. Insley
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Publication number: 20090272378Abstract: A respiratory device includes a face seal and a unitary body that forms an interface with the face seal and includes a lens and a chassis. The chassis includes at least one port for fluidic connection.Type: ApplicationFiled: July 14, 2009Publication date: November 5, 2009Inventors: James R. Betz, Brandon H. Harmon, Andrew S. Viner, Scott A. Larson, David M. Castiglione
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Patent number: 7594510Abstract: A respiratory device includes a face seal and a unitary body that forms an interface with the face seal and includes a lens and a chassis. The chassis includes at least one port for fluidic connection.Type: GrantFiled: March 31, 2006Date of Patent: September 29, 2009Assignee: 3M Innovative Properties CompanyInventors: James R. Betz, Brandon H. Harmon, Andrew S. Viner, Scott A. Larson, David M. Castiglione
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Patent number: 7302951Abstract: A unidirectional valve, wherein the valve comprises a valve body including a frame, a valve opening through the frame, and a valve seat extending from the frame and at least partially surrounding the valve opening. The valve further includes a valve flap having a first portion attached to the frame and an adjacent second portion free to move from a first position where the second portion is in contact with at least a part of the valve seat to a second position where at least part of the second portion is spaced from the valve seat, wherein the valve flap has a nonuniform thickness. The thickness variations may occur between sides of the valve flap, and may also occur between the ends of the valve flap.Type: GrantFiled: February 23, 2005Date of Patent: December 4, 2007Assignee: 3M Innovative Properties CompanyInventors: William A. Mittelstadt, David M. Castiglione
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Patent number: 6883518Abstract: A unidirectional valve, wherein the valve comprises a valve body including a frame, a valve opening through the frame, and a valve seat extending from the frame and at least partially surrounding the valve opening. The valve further includes a valve flap having a first portion attached to the frame and an adjacent second portion free to move from a first position where the second portion is in contact with at least a part of the valve seat to a second position where at least part of the second portion is spaced from the valve seat, wherein the valve flap has a nonuniform thickness. The thickness variations may occur between sides of the valve flap, and may also occur between the ends of the valve flap.Type: GrantFiled: June 25, 2001Date of Patent: April 26, 2005Assignee: 3M Innovative Properties CompanyInventors: William A. Mittelstadt, David M. Castiglione
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Patent number: 6732733Abstract: A half-mask respirator is retained on a wearer's head by upper and lower straps and a strap support. The upper and lower straps connect to the strap support at upper and lower strap attachment points on each side of the strap support. The distances between the attachment points on each opposing side of the strap support are fixed when the strap support is located on the wearer's skull and the half-mask respirator is mounted over the wearer's nose and mouth. As a result, the lower strap is supported above the neck of the wearer which eliminates a potential source of discomfort for the wearer.Type: GrantFiled: March 27, 2000Date of Patent: May 11, 2004Assignee: 3M Innovative Properties CompanyInventors: Gerald M. Brostrom, David M. Castiglione, William A. Mittelstadt, Alan J. Solyntjes
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Patent number: 6729332Abstract: A compression element and a retention assembly using the compression element to retain an article on a flexible substrate are disclosed. Also disclosed is a method of making an assembly including an article retained on a substrate by a compression element. The retention assembly, compression element and method provide replacements for, e.g., mechanical staples. The retention assemblies, compression elements and methods are particularly useful for attaching elastic articles to the surfaces of flexible substrates without piercing the substrate. One example of attaching an elastic article to the surface of a flexible substrate is the attachment of an elastic strap to a respirator.Type: GrantFiled: October 22, 1999Date of Patent: May 4, 2004Assignee: 3M Innovative Properties CompanyInventor: David M. Castiglione
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Patent number: 6705317Abstract: A compression element and a retention assembly using the compression element to retain an article on a flexible substrate are disclosed. Also disclosed is a method of making an assembly including an article retained on a substrate by a compression element. The retention assembly, compression element and method provide replacements for, e.g., mechanical staples. The retention assemblies, compression elements and methods are particularly useful for attaching elastic articles to the surfaces of flexible substrates without piercing the substrate. One example of attaching an elastic article to the surface of a flexible substrate is the attachment of an elastic strap to a respirator.Type: GrantFiled: August 14, 2001Date of Patent: March 16, 2004Assignee: 3M Innovative Properties CompanyInventor: David M. Castiglione
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Publication number: 20020195108Abstract: A unidirectional valve, wherein the valve comprises a valve body including a frame, a valve opening through the frame, and a valve seat extending from the frame and at least partially surrounding the valve opening. The valve further includes a valve flap having a first portion attached to the frame and an adjacent second portion free to move from a first position where the second portion is in contact with at least a part of the valve seat to a second position where at least part of the second portion is spaced from the valve seat, wherein the valve flap has a nonuniform thickness. The thickness variations may occur between sides of the valve flap, and may also occur between the ends of the valve flap.Type: ApplicationFiled: June 25, 2001Publication date: December 26, 2002Applicant: 3M Innovative Properties CompanyInventors: William A. Mittelstadt, David M. Castiglione
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Publication number: 20020195109Abstract: A unidirectional valve, wherein the valve comprises a valve body including a frame, a valve opening through the frame, and a valve seat extending from the frame and at least partially surrounding the valve opening. The valve further includes a valve flap having a first portion attached to the frame and an adjacent second portion free to move from a first position where the second portion is in contact with at least a part of the valve seat to a second position where at least part of the second portion is spaced from the valve seat, wherein the valve flap has a contour profile. The contoured profile may be along the length of the valve flap, between the point of attachment of the flap to the frame and the flap end, or from one flap side edge to a second side edge.Type: ApplicationFiled: June 25, 2001Publication date: December 26, 2002Applicant: 3M Innovative Properties CompanyInventors: William A. Mittelstadt, David M. Castiglione, Thomas I. Insley
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Publication number: 20020026943Abstract: A compression element and a retention assembly using the compression element to retain an article on a flexible substrate are disclosed. Also disclosed is a method of making an assembly including an article retained on a substrate by a compression element. The retention assembly, compression element and method provide replacements for, e.g., mechanical staples. The retention assemblies, compression elements and methods are particularly useful for attaching elastic articles to the surfaces of flexible substrates without piercing the substrate. One example of attaching an elastic article to the surface of a flexible substrate is the attachment of an elastic strap to a respirator.Type: ApplicationFiled: August 14, 2001Publication date: March 7, 2002Applicant: 3M Innovative Properties CompanyInventor: David M. Castiglione
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Patent number: 6279570Abstract: A filter support that includes two or more first support ribs on a first side of the filter support is disclosed. The first support ribs are generally aligned along a longitudinal axis. The filter support also includes two or more second support ribs on a second side of the filter support, where the filter support's second side is opposite from the first side. The second support ribs are also generally aligned along the longitudinal first axis. At least one of the first support ribs is laterally offset from each of the second support ribs along a transverse axis that is generally perpendicular to the longitudinal axis. The filter support provides support to opposing sides of a filter bag or opposing individual filter elements. Also disclosed are a filter assembly including a filter and a filter support, along with a helmet-mounted powered air purifying respirator in which the filter assembly is located within the helmet crown.Type: GrantFiled: March 2, 1999Date of Patent: August 28, 2001Assignee: 3M Innovative Properties CompanyInventors: William A. Mittelstadt, David M. Castiglione
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Patent number: 5558089Abstract: A nose clip 12 useful for fitting a respirator 10 over a person's nose. The nose clip 12 includes a non-linear strip 18 that has first and second wings 20 and 22 and a midsection 24. There are first, second, and third inflections 26, 28, and 30 disposed, respectively, between the first wing 20 and the midsection 24, centrally in the midsection 24, and between the midsection 24 and the second wing 22.Type: GrantFiled: December 27, 1995Date of Patent: September 24, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventor: David M. Castiglione
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Patent number: D444218Type: GrantFiled: March 2, 1999Date of Patent: June 26, 2001Assignee: 3M Innovative Properties CompanyInventors: William A. Mittelstadt, David M. Castiglione
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Patent number: D456505Type: GrantFiled: August 3, 2000Date of Patent: April 30, 2002Assignee: 3M Innovative Properties CompanyInventors: Jon R. Wolf, Paul K. Johnson, Brian S. McGinley, David M. Castiglione, Benjamin J. Cullen, Raymond Odell
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Patent number: D467656Type: GrantFiled: June 25, 2001Date of Patent: December 24, 2002Assignee: 3M Innovative Properties CompanyInventors: William A. Mittelstadt, David M. Castiglione, Casey L. Carlson
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Patent number: D471627Type: GrantFiled: June 25, 2001Date of Patent: March 11, 2003Assignee: 3M Innovative Properties CompanyInventors: William A. Mittelstadt, David M. Castiglione, Casey L. Carlson
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Patent number: D568986Type: GrantFiled: July 31, 2007Date of Patent: May 13, 2008Assignee: 3M Innovative Properties CompanyInventors: Thomas W. Holmquist-Brown, John M. Pilgrim, James R. Betz, Sean M. Burke, Alan J. Solyntjes, Paul A. Martinson, David M. Castiglione
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Patent number: D412573Type: GrantFiled: February 20, 1996Date of Patent: August 3, 1999Assignee: 3M Innovative Properties CompanyInventor: David M. Castiglione