Michael J Shin

US Patent:

8483871, Jul 9, 2013

Filed:

Nov 23, 2011

Appl. No.:

13/303807

Inventors:

David A. Kropp - Plano TX, US
Timothy J. Wall - Plano TX, US
Michael E. Shin - Gaithersburg MD, US

Assignee:

Rug Doctor, Inc. - Plano TX

International Classification:

G06F 17/00
G06Q 30/06

US Classification:

700237, 700232, 700236, 700243

Abstract:

A self-service kiosk enables customers to conduct rental transactions for carpet cleaning machines without the need of assistance from store personnel. The kiosk comprises a housing having several stalls or bays that hold and display carpet cleaning machines and carpet cleaning accessories for rental. The kiosk controls whether such carpet cleaning machines and carpet cleaning accessories can be removed from or returned to the kiosk. The kiosk also optionally includes a control panel for conducting a rental transaction. The self-service kiosk may also include automatic dispensing of cleaning products purchased by the customer at the kiosk. Still further, the self-serve kiosk may include shelving for holding cleaning products that can be purchased separately at a checkout counter.

US Patent:

20130068220, Mar 21, 2013

Filed:

Aug 28, 2009

Appl. No.:

13/120444

Inventors:

Ravikumar V. Kudaravalli - Manassas VA, US
Michael Shin - Pleasanton CA, US

International Classification:

A61M 16/10
A61M 16/00

US Classification:

12820121

Abstract:

A system for generating liquid oxygen (LOX) for portable use by a patient includes a patient portable unit configured to store LOX and deliver gaseous oxygen (GOX) to the patient, and a mobile base unit configured to generate LOX by cryogenic separation of air and deliver the generated LOX to the patient portable unit. The mobile base unit includes a compressor that receives and pressurizes air, a purifier that removes impurities from the pressurized air, a heat exchanger that cools the purified air, a cryocooler that further cools the air to cryogenic temperatures, and a distillation unit that separates the cryogenic air into multiple products, including LOX and one or more cold byproducts. The separated LOX is communicated toward storage, and at least one of the cold byproducts is passed through the heat exchanger to facilitate heat transfer from incoming purified air to the at least one cold byproduct in order to cool the purified air.

US Patent:

20130270979, Oct 17, 2013

Filed:

Jun 11, 2013

Appl. No.:

13/914864

Inventors:

Timothy J. Wall - Plano TX, US
Michael E. Shin - Gaithersburg MD, US

International Classification:

G07F 7/00

US Classification:

312215

Abstract:

A self-service kiosk enables customers to conduct rental transactions for carpet cleaning machines without the need of assistance from store personnel. The kiosk comprises a housing having several stalls or bays that hold and display carpet cleaning machines and carpet cleaning accessories for rental. The kiosk controls whether such carpet cleaning machines and carpet cleaning accessories can be removed from or returned to the kiosk. The kiosk also optionally includes a control panel for conducting a rental transaction. The self-service kiosk may also include automatic dispensing of cleaning products purchased by the customer at the kiosk. Still further, the self-serve kiosk may include shelving for holding cleaning products that can be purchased separately at a checkout counter.