JOHN M HAMNETT
Accountancy in Natick, MA
License number
Massachusetts 8065
Issued Date
Jul 1, 1983
Expiration Date
Jun 30, 1985
Type
Certified Public Accountant
Address
Address
Natick, MA 01760
Professional information
Passive Gravity-Balanced Assistive Device For Sit-To-Stand Tasks
US Patent:
2006026, Nov 23, 2006
Filed:
Apr 21, 2006
Appl. No.:
11/409163
Inventors:
Sunil Agrawal - Newark DE, US
Abbas Fattah - Newark DE, US
Glenn Catlin - Bloomfield NJ, US
John Hamnett - Natick MA, US
Abbas Fattah - Newark DE, US
Glenn Catlin - Bloomfield NJ, US
John Hamnett - Natick MA, US
International Classification:
A61G 15/00
US Classification:
128845000
Abstract:
A passive gravity balancing assist device for human sit-to-stand motion is provided. The design combines the use of auxiliary parallelograms with springs to produce an orthotic device wherein the total potential energy of the system is constant during standing and sitting motion.