Henry Shuei Hsu

US Patent:

7101487, Sep 5, 2006

Filed:

Nov 25, 2003

Appl. No.:

10/722313

Inventors:

Henry Hsu - Aliso Viejo CA, US
Michael Lars Palmer - Ladera Ranch CA, US
Ronald J. Lukasiewicz - Carlsbad CA, US
Michael W. Lindsay - Mission Viejo CA, US
Stephen W. Prince - Mission Viejo CA, US

Assignee:

Ossur Engineering, Inc. - Albion MI

International Classification:

H01F 1/44

US Classification:

252 6252

Abstract:

The present invention relates in one embodiment to magnetorheological fluids utilized in prosthetic joints in general and, in particular, to magnetorheological fluids utilized in controllable braking systems for prosthetic knee joints. Preferred magnetorheological fluids of the present invention comprises polarizable iron particles, a carrier fluid, and optionally an additive. Preferred additives include, but are not limited to functionalized carrier fluids as well as derivatized fluoropolymers. Preferred carrier fluids include, but are not limited, to perfluorinated polyethers.

US Patent:

7198071, Apr 3, 2007

Filed:

May 6, 2005

Appl. No.:

11/124610

Inventors:

Henry H. Hsu - Aliso Viejo CA, US

Assignee:

Össur Engineering, Inc. - Albion MI

International Classification:

B65B 1/04

US Classification:

141 8, 141 65, 141 67, 252 6252

Abstract:

The invention in some embodiments relates to systems and methods of loading fluid in a prosthetic knee. A vacuum fill technique is utilized in one embodiment to load magnetorheological fluid within small gaps in a chamber of a prosthetic knee. Advantageously, this allows for an efficient loading scheme thereby desirably allowing for faster manufacturing speed. Another advantage is that the magnetorheological fluid is substantially uniformly distributed within the small gaps thereby desirably providing consistent production.

US Patent:

7335233, Feb 26, 2008

Filed:

Mar 15, 2006

Appl. No.:

11/376651

Inventors:

Henry Hsu - Aliso Viejo CA, US
Michael Lars Palmer - Ladera Ranch CA, US
Ronald J. Lukasiewicz - Carlsbad CA, US
Michael W. Lindsay - Mission Viejo CA, US
Stephen W. Prince - Mission Viejo CA, US

Assignee:

Ossur HF

International Classification:

A61F 2/48
A61F 2/62

US Classification:

623 39, 252 6252, 623 26

Abstract:

The present invention relates in one embodiment to magnetorheological fluids utilized in prosthetic joints in general and, in particular, to magnetorheological fluids utilized in controllable braking systems for prosthetic knee joints. Preferred magnetorheological fluids of the present invention comprises polarizable iron particles, a carrier fluid, and optionally an additive. Preferred additives include, but are not limited to functionalized carrier fluids as well as derivatized fluoropolymers. Preferred carrier fluids include, but are not limited, to perfluorinated polyethers.

US Patent:

7455696, Nov 25, 2008

Filed:

May 6, 2005

Appl. No.:

11/124621

Inventors:

Henry H. Hsu - Aliso Viejo CA, US

Assignee:

Össur hf - Reykjavik

International Classification:

A61F 2/64
A61F 2/68

US Classification:

623 45

Abstract:

The invention in some embodiments relates to a dynamic seal for a prosthetic knee. The dynamic seal in one embodiment is utilized to seal a magnetorheological fluid comprising a liquid and solid particles within a chamber of the knee. The dynamic seal embodiments are specially configured with a pre-loaded tensioned garter spring which has a coil spacing that is at least as large as the size of the particles or maximum size of the particles in the magnetorheological fluid. Desirably, this allows the magnetorheological fluid particles to flow in and out of the dynamic seal without clogging the seal and advantageously provides for a reliable dynamic seal.

US Patent:

7691154, Apr 6, 2010

Filed:

May 6, 2005

Appl. No.:

11/124637

Inventors:

Sigurdur Asgeir Asgeirsson - Gardabaer, IS
Henry H. Hsu - Aliso Viejo CA, US

Assignee:

Össur hf - Reykjavik

International Classification:

A61F 2/64
A61F 2/74
F16F 9/53

US Classification:

623 26, 623 43, 1882672

Abstract:

The invention in some embodiments relates to systems and methods of controlling pressure within a prosthetic knee. The knee in one embodiment comprises a flexible diaphragm that substantially prevents or mitigates undesirable pressure build-up in a sealed chamber of the knee. The knee in another embodiment comprises a compressible gas in the chamber that substantially prevents or mitigates undesirable pressure build-up in the chamber.

US Patent:

D644921, Sep 13, 2011

Filed:

Jan 15, 2011

Appl. No.:

29/383368

Inventors:

David Hsu - Norco CA, US
Clinton Yee - Corona CA, US
Henry Immanuel Hsu - Mission Viejo CA, US

Assignee:

Group-A Autosports, Inc. - Norco CA

International Classification:

0808

US Classification:

D 8399

US Patent:

D645337, Sep 20, 2011

Filed:

Jan 15, 2011

Appl. No.:

29/383369

Inventors:

David Hsu - Norco CA, US
Clinton Yee - Corona CA, US
Henry Immanuel Hsu - Mission Viejo CA, US

Assignee:

Group-A Autosports, Inc. - Norco CA

International Classification:

0808

US Classification:

D 8399

US Patent:

8567098, Oct 29, 2013

Filed:

Mar 19, 2013

Appl. No.:

13/847311

Inventors:

Henry Hsu - Torrance CA, US

International Classification:

A43B 3/24
A43B 3/26

US Classification:

36101, 36 97, 36100

Abstract:

An article of footwear includes a sole and an upper attached to the sole. The sole includes a hard sole base forming an outline of the footwear and a mid sole resting on the sole base, the mid sole made of a softer material than the sole base to provide comfort to a wearer. The upper has sock like construction using stretchable materials to conform to shapes of the foot. The upper is attached to the sole by straps passing through the upper allowing a degree of independent motion of the upper to conform to a foot.