Patent · US Expired

Anvil-strap rotor

US4462755A · kind A · utility

8Cited by

11References

11Claims

0Family size

Assignee

United States of America as represented by the Secretary of the Air Force · US

Inventors

Peter C. Ogle · Charlestown, US
Edward S. Hibyan · Trumbull, US

Key dates

Filing date	Aug 24, 1981
Grant date	Jul 31, 1984
Priority date	—
Expiry date	Aug 24, 2001

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB64C27/33
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

An aerodynamic rotor having a flexible blade comprising a plurality of planar layers and an anvil having configured bearing areas engagable with the flexed blade is presented. The plurality of layers are slidably movable in a shearing motion with respect to other layers. The blade is secured by the anvil with the configured bearing areas being engagable with an adjacent portion of the blade when the blade is flexed by forces created by the driven rotory motion of the anvil about an axis of rotation. Such a rotor with a laminated blade exhibits reduced head moment forces and reduced stress/strain forces within the blade thereby permitting improved reliability and maintenance.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.