Nova Patents
AU4265797A

Torsion friction spring hinge

Abstract

The present invention is a spring hinge (10) for generating torque. The spring hinge (10) includes a shaft (12) and a single helical element (14). The shaft (12) has a surface (13) with an outer diameter and is capable of rotation. The single helical element (14) is wrapped about the shaft (12). The helical element (14) includes a first end (16) and a second end (18). The helical element (14) produces a variable torque between the first (16) and second ends (18).

Term

Term ended

Projected expiry passed 10 September 2017, 9 years ago.

  1. Priority
  2. Filed
  3. Published
  4. Projected expiry
  5. Today

3 members in 3 offices

This recordMember, by publication datePriority claim

Priority claims8

Priority claims
DocumentOfficeKindDate
71493996United States of AmericaA
71493996United States of AmericaA
9716025United States of AmericaW
9716025United States of AmericaW
08714939–––
PCTUS9716025–––
US19960714939–––
WO1997US16025–––

Members3

Family members, oldest first
DocumentOfficeKind
WO9812404A1World Intellectual Property Organization (WIPO)A1
AU4265797AThis recordAustraliaA
US5771539AUnited States of AmericaA