David C Christensen

US Patent:

7299927, Nov 27, 2007

Filed:

Feb 7, 2005

Appl. No.:

11/052727

Inventors:

Steven R. Emter - Murrieta CA, US
David M. Christensen - Fallbrook CA, US

Assignee:

Peak Plastic & Metal Products (International) Limited - Hong Kong

International Classification:

B65D 85/00
B65D 85/30
B65D 21/036

US Classification:

206710, 206454, 206510, 211 4118, 220 236

Abstract:

A wafer container comprising a base and a cover that nest together. The cover includes tabs on a lower portion that engage notches on the frame. The cover can be combined with the base without indexing to a precise opening on the frame. A handle on the cover enables an operator to easily rotate the container into a locked position. A ribbed pattern on the exterior surface of the frame enables the wafer container to be stacked with another wafer container.

US Patent:

7438185, Oct 21, 2008

Filed:

May 17, 2005

Appl. No.:

11/130722

Inventors:

Thi Q. Ho - Murrieta CA, US
David M. Christensen - Fallbrook CA, US

Assignee:

Peak Plastic and Metal Products (International) Limited - Hong Kong

International Classification:

B65D 21/00
B65D 85/62

US Classification:

206509

Abstract:

The invention concerns a tray having an integral latch that mates to a boss of an adjacent tray to form a stable stack. The latch may be incorporated into any type of tray, basket, or other container for storing articles. Multiple containers may be stacked together without the use of a detachable clip. Also disclosed is a tray that includes an array of posts extending downward to support the tray on a flat surface.

US Patent:

20060108242, May 25, 2006

Filed:

Nov 19, 2004

Appl. No.:

10/993343

Inventors:

David Christensen - Fallbrook CA, US
Robert White - Tracy CA, US

International Classification:

B65D 85/30
B65D 85/00

US Classification:

206308100, 206445000

Abstract:

A disk caddy for storing media disks in a disk caddy is disclosed. The disk caddy includes at least one leverage arm for disengaging the top cover to remove or store media disks within a disk cassette. The leverage arm may comprise a finger well, a gusset, a ring, or a releasable tab. Methods for removing a disk from a disk caddy are also disclosed.

US Patent:

20060118459, Jun 8, 2006

Filed:

Dec 7, 2004

Appl. No.:

11/007501

Inventors:

David Christensen - Fallbrook CA, US

International Classification:

B65D 85/00

US Classification:

206725000

Abstract:

A system and method for precisely locating the position of a component in a tray. The tray is a unitary structure having a plurality of protrusions on at least one side. A robot relies on the protrusions to locate pockets adjacent to each protrusion. An end effector reaches for a component in each pocket. The degree of accuracy of locating a component in a tray is enhanced by employing the plurality of protrusions and by following the method of the present invention.

US Patent:

20060283773, Dec 21, 2006

Filed:

Apr 25, 2006

Appl. No.:

11/411075

Inventors:

Thi Ho - Murrieta CA, US
David Christensen - Fallbrook CA, US

International Classification:

B65D 85/00
B65D 1/34

US Classification:

206725000, 206706000, 206701000, 206564000

Abstract:

A method and apparatus for handling sensitive components includes a tray having an array of integral latches. A portion of each latch serves to maintain the components on their respective mounts. The method of using the tray involves displacing the latch with an end effector to enable automated removal of the component from the tray.

US Patent:

61738433, Jan 16, 2001

Filed:

Nov 15, 1999

Appl. No.:

9/440487

Inventors:

David M Christensen - Mission Viejo CA
Arthur L. Smith - Huntington Beach CA

Assignee:

Gateway, Inc - North Sioux City SD

International Classification:

A47F 500

US Classification:

211 4117

Abstract:

A spring-biased latching mechanism eliminates the use of brackets and screws to retain expansion cards or electronic circuit boards in computers or similar information handling systems. The spring-biased latching mechanism has a latching member that is cammed out of the path of a computer expansion card as the card is inserted into the computer housing; the latching or retention member may be pushed to a fully retracted or withdrawn position and latched, thus removing the latching member from interference with the expansion card and permitting easy removal of the expansion card. The spring-biased latching member is provided with a groove to provide guidance to the expansion card during insertion and may stabilize the card whenever the latching member is extended to retain the expansion card in position relative to a computer motherboard. Elimination of the screws and brackets prevents any potential damage to the electronics of the computer resultant from dropped screws or bracket contact and any subsequent damage to electronic circuit boards in the computer. The spring-biased latching mechanism also greatly improves the speed of assembly and/or disassembly.