Patents by Inventor Dennis D. Davis
Dennis D. Davis 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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Patent number: 8439322Abstract: A mounting post for supporting a plurality of electronic cabinets, each having different bolt patterns, comprising a hollow post configured to receive a hollow mount at the upper end, a stabilizer plate attached to the lower end of the post, and a hollow mount selected from a plurality of hollow mounts, each having a lower end configured to mate to the post, and having a substantially planar upper surface with openings formed therein corresponding to a unique bolt pattern for an electronics cabinet.Type: GrantFiled: May 27, 2011Date of Patent: May 14, 2013Assignees: Windstream Intellectual Property Services, Inc., General Devices Co., Inc.Inventors: Michael E. Skudin, Dennis D. Davis, David W. Willis
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Publication number: 20110290957Abstract: A mounting post for supporting a plurality of electronic cabinets, each having different bolt patterns, comprising a hollow post configured to receive a hollow mount at the upper end, a stabilizer plate attached to the lower end of the post, and a hollow mount selected from a plurality of hollow mounts, each having a lower end configured to mate to the post, and having a substantially planar upper surface with openings formed therein corresponding to a unique bolt pattern for an electronics cabinet.Type: ApplicationFiled: May 27, 2011Publication date: December 1, 2011Inventors: Michael E. Skudin, Dennis D. Davis, David W. Willis
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Patent number: 6465274Abstract: An apparatus for forming a stamped groove in a lead frame including a tool for coining the groove in the lead frame. The tool has a shoulder to control swelling of the lead frame surface near the groove.Type: GrantFiled: May 21, 2001Date of Patent: October 15, 2002Assignee: Texas Instruments IncorporatedInventors: Buford H. Carter, Jr., Dennis D. Davis
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Patent number: 6401765Abstract: A modular tool for forming features in an exposed pad having a pad surface between a bleed groove and an edge of the pad surface in a lead frame including a first tool for forming a bottom of the exposed pad under the pad surface, a second tool coupled to the first tool for forming a side of the exposed pad, and a third tool coupled to the first tool for forming another side of the exposed pad.Type: GrantFiled: August 22, 2000Date of Patent: June 11, 2002Assignee: Texas Instruments IncorporatedInventors: Buford H. Carter, Jr., Dennis D. Davis
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Publication number: 20020047185Abstract: An apparatus for forming a stamped groove in a lead frame including a tool for coining the groove in the lead frame. The tool has a shoulder to control swelling of the lead frame surface near the groove.Type: ApplicationFiled: May 21, 2001Publication date: April 25, 2002Inventors: Buford H. Carter, Dennis D. Davis
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Patent number: 6365980Abstract: A semiconductor device comprising a thermally conductive foil including a chip mount portion having first and second surfaces; an integrated circuit chip attached to said first surface; a body of encapsulation material molded around said chip and said first surface such that it leaves said second surface exposed; and said second surface comprising means for forming thermal contact, thereby creating a path for dissipating thermal energy from said chip. Said means for thermal contact comprise a configuration of said second surface suitable for direct thermal attachment to a heat sink. Alternatively, said means for thermal contact comprise a configuration of said second surface suitable for thermal attachment including solder balls between the chip and the heat sink.Type: GrantFiled: February 25, 2000Date of Patent: April 2, 2002Assignee: Texas Instruments IncorporatedInventors: Buford H. Carter, Jr., Dennis D. Davis, David R. Kee, Richard E. Johnson
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Patent number: 6365976Abstract: A semiconductor device, especially a Ball Grid Array or Chip Scale Package, comprising an integrated circuit chip having at least one input/output terminal; a body of encapsulation material molded around said chip, forming a generally flat surface including at least one dimple having a suitable size and shape to receive a solder ball or solder paste; and said dimple having an electrically conductive solderable surface connected to said terminal.Type: GrantFiled: February 23, 2000Date of Patent: April 2, 2002Assignee: Texas Instruments IncorporatedInventors: Buford H. Carter, Jr., Dennis D. Davis, David R. Kee, Richard E. Johnson
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Publication number: 20020025598Abstract: An apparatus for forming a stamped groove in a lead frame including a tool for coining the groove in the lead frame. The tool has a shoulder to control swelling of the lead frame surface near the groove.Type: ApplicationFiled: May 21, 2001Publication date: February 28, 2002Inventors: Buford H. Carter, Dennis D. Davis
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Patent number: 6258253Abstract: The present invention provides a vapor corrosion cell for a real-time and quantitative measurement of corrosion of conductive materials in atmospheres containing chemically reactive gases and water vapor. Two prototypes are provided. Also provided are various applications of this apparatus in industry.Type: GrantFiled: April 15, 1999Date of Patent: July 10, 2001Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventor: Dennis D. Davis
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Patent number: 6211462Abstract: The invention provides a low inductance semiconductor package for RF circuits having a flat leadframe with internal leads formed upward to be in very close proximity to the die mount pad. The die mount pad is exposed through the package backside and serves both as a ground plane and as a heat spreader. The external leads are flat and extend beyond the package edge so that good solder connections to a printed wiring board can be made and inspected. The lead tips exposed beyond the package further provide a position for mold clamping and for test probing the device.Type: GrantFiled: November 4, 1999Date of Patent: April 3, 2001Assignee: Texas Instruments IncorporatedInventors: Buford H. Carter, Jr., Dennis D. Davis
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Patent number: 5683813Abstract: A pad for cleaning up liquid spills is described which contains a porous surface covering, and an absorbent interior containing chemically reactive reagents for neutralizing noxious chemicals within the spilled liquid. The porous surface and the absorbent component would normally consist of chemically resistant materials allowing tentative spill to pass. The absorbent interior which contains the neutralizing reagents can but is not required to be chemically resilient and conducts the liquid chemical spill towards the absorbent interior containing the chemically reactive reagents where the dangerous and undesirable chemicals within the chemical spill are then neutralized as well as removed from the premises.Type: GrantFiled: May 28, 1996Date of Patent: November 4, 1997Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventor: Dennis D. Davis
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Patent number: 5663597Abstract: This is a device package comprising: a leadframe comprising a plurality of leads for effecting circuit connections to the device; and a metal ground piece connected to the leadframe. Other devices and methods are also disclosed.Type: GrantFiled: November 23, 1994Date of Patent: September 2, 1997Assignee: Texas Instruments IncorporatedInventors: Stephen R. Nelson, Buford H. Carter, Dennis D. Davis, Tammy J. Lahutsky, John Barnett, Glen R. Haas, Jr.
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Patent number: 5594234Abstract: The invention is a single piece deep downset exposed lead frame (10) that can be used in current production processes. A single lead frame (10) has a die mount pad (12) that is formed with a downset or cavity into which the semiconductor die (20) is mounted. Wings (14, 15, 17, 18) lock the die pad in the device package (21) and increase the length of potential moisture paths (34a). The downset die pad (12) provides direct thermal contact of the die mount pad (12) to an external heat sink, eliminating the need for a heat slug internal to the package. The exposed die pad (12) can also be used as an RF ground connection to an RF circuit ground plane.Type: GrantFiled: November 14, 1994Date of Patent: January 14, 1997Assignee: Texas Instruments IncorporatedInventors: Buford H. Carter, Jr., Dennis D. Davis, David R. Kee, Jesse Clark, Steven P. Laverde, Hai Tran
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Patent number: 5562963Abstract: A pad for cleaning up liquid spills is described which contains a porous surface covering, and an absorbent interior containing chemically reactive reagents for neutralizing noxious chemicals within the spilled liquid. The porous surface and the absorbent component would normally consist of chemically resistant materials allowing tentative spill to pass. The absorbent interior which contains the neutralizing reagents can but is not required to be chemically resilient and conducts the liquid chemical spill towards the absorbent interior containing the chemically reactive reagents where the dangerous and undesirable chemicals within the chemical spill are then neutralized as well as removed from the premises.Type: GrantFiled: August 31, 1994Date of Patent: October 8, 1996Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventor: Dennis D. Davis
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Patent number: 5545846Abstract: The invention is to a header for a power semiconductor device and a method for making the header. A ground pin is mounted or formed on the header mounting base and a header ground lead is placed over the ground pin and fused to the pin by a laser beam.Type: GrantFiled: September 30, 1993Date of Patent: August 13, 1996Assignee: Texas Instruments IncorporatedInventors: Charles E. Williams, Dennis D. Davis, David Kee
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Patent number: 5479050Abstract: A raised pedestal is formed on a leadframe die mount pad and is used in forming an electrical connection between the die bond pad and the semiconductor die, the electrical connection being isolated from the shear forces developed during temperature cycling or during thermal shock of the resultant semiconductor device. Such shear forces usually result in destruction of the bond between the semiconductor die and the die bond pad.Type: GrantFiled: October 11, 1994Date of Patent: December 26, 1995Assignee: Texas Instruments IncorporatedInventors: James W. Pritchard, Dennis D. Davis
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Patent number: 5376909Abstract: This is a package [10] for an rf device [11] operable with a characteristic impedance providing a plurality of terminals [12-19] and [101] for effecting circuit connections to the device, the connection between at least one of the terminals and the device being matched in relation to the characteristic impedance. Other devices and methods are also disclosed.Type: GrantFiled: May 21, 1993Date of Patent: December 27, 1994Assignee: Texas Instruments IncorporatedInventors: Stephen R. Nelson, Buford H. Carter, Jr., Tammy J. Lahutsky, Glen R. Haas, Dennis D. Davis, Charles W. Suckling, Glenn Collinson
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Patent number: 5179025Abstract: A flow reactor for simulating the interaction in the troposphere is set forth. A first reactant mixed with a carrier gas is delivered from a pump and flows through a duct having louvers therein. The louvers straighten out the flow, reduce turbulence and provide laminar flow discharge from the duct. A second reactant delivered from a source through a pump is input into the flowing stream, the second reactant being diffused through a plurality of small diffusion tubes to avoid disturbing the laminar flow. The commingled first and second reactants in the carrier gas are then directed along an elongate duct where the walls are spaced away from the flow of reactants to avoid wall interference, disturbance or turbulence arising from the walls. A probe connected with a measuring device can be inserted through various sampling ports in the second duct to complete measurements of the first and second reactants and the product of their reaction at selected XYZ locations relative to the flowing system.Type: GrantFiled: July 30, 1991Date of Patent: January 12, 1993Assignee: The United States of America as represented by the United States National Aeronautics and Space AdministrationInventors: Steven L. Koontz, Dennis D. Davis
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Patent number: 5077015Abstract: A flow reactor for simulating the interaction in the troposphere is set forth. A first reactant mixed with a carrier gas is delivered from a pump and flows through a duct having louvers therein. The louvers straighten out the flow, reduce turbulence and provide laminar flow discharge from the duct. A second reactant delivered from a source through a pump is input into the flowing stream, the second reactant being diffused through a plurality of small diffusion tubes to avoid disturbing the laminar flow. The commingled first and second reactants in the carrier gas are then directed along an elongate duct where the walls are spaced away from the flow of reactants to avoid wall interference, disturbance or turbulence arising from the walls. A probe connected with a measuring device can be inserted through various sampling ports in the second duct to complete measurements of the first and second reactants and the product of their reaction at selected XYZ locations relative to the flowing system.Type: GrantFiled: December 2, 1988Date of Patent: December 31, 1991Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Steven L. Koontz, Dennis D. Davis
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Patent number: 5070039Abstract: A lead from 10 carries an integrated circuit on a die support pad 14. The lead frame has a dam bar including a transverse portion that extends between adjacent leads (20) for limiting mold flash. The dam bar transverse portion 26 is entirely severed from the adjacent leads for final removal by a metal punch 33 along with the supporting web 16.Type: GrantFiled: April 13, 1989Date of Patent: December 3, 1991Assignee: Texas Instruments IncorporatedInventors: Richard E. Johnson, Dennis D. Davis, David R. Kee, John W. Orcutt, Angus W. Hightower