Michael Q Perkins

US Patent:

6693514, Feb 17, 2004

Filed:

Mar 20, 2002

Appl. No.:

10/102219

Inventors:

Steven J. Grabowski - Chicago IL
Michael C. Perkins - Rolling Meadows IL

Assignee:

Rauland-Borg Corporation - Skokie IL

International Classification:

H05B 4100

US Classification:

340332, 3406914, 34028607, 362215, 362225, 362236

Abstract:

A signaling device for annunciating in a hallway of a building a status of a monitored person or object is provided. The signaling device includes at least two vertically stacked sections for announcing a status of the monitored person or object with each section announcing a status of a different condition. Each section includes a solid-state, light-emitting device (LED) that is supported such that when the device is mounted to the wall of the hallway a beam of light from the LED is substantially aimed at a wall opposing the wall to which the device is mounted. A pair of opposing planar surfaces extends along diverging planes and is supported over each LED to receive the LEDs beam of light. Each of the planar surfaces extends at an angle approximately equal to a characteristic optical beam angle of the beam of light. This arrangement causes light from the light beam to substantially uniformly illuminate an entirety of each of the planar surfaces when viewed from an angle approximately perpendicular to a direction in which the beam of light is aimed.

US Patent:

7018737, Mar 28, 2006

Filed:

Oct 22, 2003

Appl. No.:

10/692074

Inventors:

Michael Perkins - Santa Clara CA, US
Stuart Kurdi - Mountain View CA, US
George W. Heropoulos - Morgan Hill CA, US
Larry Lynch - Los Gatos CA, US

Assignee:

LeapFrog Enterprises, Inc. - Emeryville CA

International Classification:

H01M 2/00

US Classification:

429163, 429164, 429167

Abstract:

A battery pack is disclosed. The battery pack includes a housing, and a rechargeable power source within a linear portion the housing. The linear portion of the housing is receivable in first and second battery holding regions of another housing. The first and second battery holding regions are aligned along the same axis.

US Patent:

7068262, Jun 27, 2006

Filed:

Jun 9, 2003

Appl. No.:

10/457981

Inventors:

Michael Perkins - Santa Clara CA, US
Peter Nevil Milford - Los Gatos CA, US
Kim Voskuil - Fremont CA, US
Larry Lynch - Los Gatos CA, US
Julie Wu Kuei Yao Willey - Palo Alto CA, US

Assignee:

LeapFrog Enterprises, Inc. - Emeryville CA

International Classification:

G09G 5/00

US Classification:

345179, 345173, 178 1901

Abstract:

A stylus for an electrographic position location apparatus is disclosed. In one embodiment, the stylus includes a writing element that is retractable. The stylus may have a proximal end and a distal end. A conductive annular structure may be at the proximal end of the stylus.

US Patent:

7224348, May 29, 2007

Filed:

May 4, 2006

Appl. No.:

11/418678

Inventors:

Michael Perkins - Santa Clara CA, US
Peter Nevil Milford - Los Gatos CA, US
Kim Voskuil - Fremont CA, US
Larry Lynch - Los Gatos CA, US
Julie Wu Kuei Yao Willey - Palo Alto CA, US

Assignee:

LeapFrog Enterprises, Inc. - Emeryville CA

International Classification:

G09G 5/00

US Classification:

345179, 345173, 178 1901

Abstract:

A stylus for an electrographic position location apparatus is disclosed. In one embodiment, the stylus includes a writing element that is retractable. The stylus may have a proximal end and a distal end. A conductive annular structure may be at the proximal end of the stylus.

US Patent:

7567242, Jul 28, 2009

Filed:

May 23, 2007

Appl. No.:

11/752863

Inventors:

Michael Perkins - Santa Clara CA, US
Peter Nevil Milford - Los Gatos CA, US
Kim Voskuil - Fremont CA, US
Larry Lynch - Los Gatos CA, US
Julie Wu Kuei Yao Willey - Palo Alto CA, US

Assignee:

LeapFrog Enterprises, Inc. - Emeryville CA

International Classification:

G09G 5/00

US Classification:

345179, 345173, 178 1901

Abstract:

A stylus for an electrographic position location apparatus is disclosed. In one embodiment, the stylus includes a writing element that is retractable. The stylus may have a proximal end and a distal end. A conductive annular structure may be at the proximal end of the stylus.

US Patent:

20050021909, Jan 27, 2005

Filed:

Jul 24, 2003

Appl. No.:

10/627083

Inventors:

Michael Much - San Jose CA, US
Michael Perkins - Santa Clara CA, US
Richard Freeman - San Carlos CA, US

Assignee:

LeapFrog Enterprises, Inc. - Emeryville CA

International Classification:

G06F013/00

US Classification:

711115000

Abstract:

A memory cartridge is disclosed. In one embodiment, the memory cartridge has a housing, and a memory unit in the housing, where the memory unit stores a plurality of data sets. An edge connector is electrically coupled to the memory unit. A selector is coupled to the housing and the selector is adapted to select at least one of the data sets. A locking member for locking the selector is coupled to housing.

US Patent:

20050026128, Feb 3, 2005

Filed:

Feb 17, 2004

Appl. No.:

10/781554

Inventors:

Michael Wood - Orinda CA, US
Jason Avery - Berkeley CA, US
Larry Lynch - Las Gatos CA, US
Michael Perkins - Santa Clara CA, US
John Caldwell - San Jose CA, US

Assignee:

LeapFrog Enterprises, Inc. - Emeryville CA

International Classification:

G09B005/00

US Classification:

434317000

Abstract:

A print media apparatus is disclosed. The print media apparatus includes a platform including a surface and a first coupling element. A plurality of electrical elements is under the surface. A processor is coupled to the plurality of electrical elements. A book is on the surface and has a spine having a second coupling element. The book and the platform are removably coupled through the first and second coupling elements.

US Patent:

20080119837, May 22, 2008

Filed:

Nov 15, 2007

Appl. No.:

11/940665

Inventors:

Douglas A. Devens - Highland Park IL, US
David W. Vancelette - San Dieto CA, US
Michael W.V. Perkins - Minnetonka MN, US

International Classification:

A61B 18/02

US Classification:

606 22

Abstract:

The present disclosure is directed to a cryoprobe capable of improving the cooling power of a cryosurgical system. A representative cryoprobe can comprise an inner cooling chamber and a radial chamber, positioned between the inner cooling chamber and an exterior wall of the cryoprobe. Preferably, the radial chamber is formed to have a low thermal conductivity so as to significantly reduce the transfer of heat between the body and the refrigerant in the inner chamber during a cryosurgical procedure. The radial chamber can be fabricated such that a vacuum can be applied to the radial chamber to further reduce heat transfer between the body and the inner cooling chamber. The radial chamber extends partially along the length of the cryoprobe such that inner cooling chamber is in direct thermal contact with the exterior wall at a cryoprobe tip.