Matthew S Shepherd

US Patent:

54823056, Jan 9, 1996

Filed:

Jan 6, 1995

Appl. No.:

8/369385

Inventors:

Benjamin L. Jeffries - Seattle WA
Barry Hyman - Bellevue WA
Matthew A. Shepherd - Seattle WA
Steven Nguyen - Seattle WA
Jaures F. Cleofe - Seattle WA
Daehwan D. Kim - Aiea HI

Assignee:

University of Washington - Seattle WA

International Classification:

B62M 114
B60B 2304

US Classification:

2802501

Abstract:

A new wheel assembly (14), with a gear reducing hub (22), and including a new hand wheel assembly (30) mounted on a hand wheel hub (36) for a manual multispeed wheelchair (10), that has an improved shifting mechanism that allows easy shifting at user's hand level. A shifter (76) is rotated, which axially moves a shift member (52) to couple with drive chock openings (46) in direct drive or a planetary gear system (58) for low gear operation. The new wheel assembly (14) also includes a quick disconnect mechanism for easy change of the wheel assembly (14) from the wheelchair (10) without tools. A torque collar (144), on the inboard side of the hub (22), couples with a sleeve assembly (136) on the wheelchair (10) and allows torque to transfer directly from hub (22) to wheelchair (10).

US Patent:

20210060862, Mar 4, 2021

Filed:

Jul 10, 2017

Appl. No.:

16/075706

Inventors:

- Houston TX, US
Jake WRIGHT - San Diego CA, US
Morgan T. SCHRAMM - Vanvcouver WA, US
Matthew A. SHEPHERD - Vancouver WA, US

Assignee:

HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. - Houston TX

International Classification:

B29C 64/393
B29C 64/153
B33Y 50/02
B33Y 10/00
B28B 1/00
B28B 17/00
B22F 3/105

Abstract:

In an example, a method includes forming a layer of build material, processing a first portion of the build material by distributing a print agent using a first distribution pattern, the first distribution pattern having a first print agent dispersion characteristic and processing a second portion of the build material by distributing a print agent using a second distribution pattern, the second distribution pattern having a second print agent dispersion characteristic. The method may further include heating the build material by exposing the layer of build material to radiation so as to cause fusing of the first and second portion.

US Patent:

20200406553, Dec 31, 2020

Filed:

Jul 10, 2017

Appl. No.:

16/075210

Inventors:

- Spring TX, US
Jake WRIGHT - San Diego CA, US
Stephen G. RUDISILL - San Diego CA, US
Matthew A. SHEPHERD - Vancouver WA, US
Vanessa VERZWYVELT - Vancouver WA, US
Morgan T. SCHRAMM - Vancouver WA, US

Assignee:

HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. - Spring TX

International Classification:

B29C 64/393
G06T 19/00

Abstract:

In an example, a method include receiving a data model of an object to be generated in additive manufacturing at a processor, the data model comprising object property data. A segmentation of a virtual build volume comprising at least a portion of the object into a plurality of nested segments may be derived. A first segment may be associated with first object generation parameters and a second segment may be associated with second, different, object generation parameters. A number of nested segments to be derived may be determined based on at least one of a geometry of the object and an intended object property.