Filament connected rim rotor

• US 4,020,714 A
• Filed: 12/04/1975
• Issued: 05/03/1977
• Est. Priority Date: 12/04/1975
• Status: Expired due to Term

• Current Assignee: Johns Hopkins University
• Original Assignee: Johns Hopkins University
• Inventors: Rabenhorst, David W.
• Primary Examiner(s): Scott, Samuel
• Assistant Examiner(s): Heald, Randall
• Application Number:
  US05/637,689
• Time in Patent Office: 516 Days
• Field of Search: 74/572, 74/573
• US Class Current: 74/572.12
• CPC Class Codes: F16F 15/305 made of plastics, e.g. fibre reinforced plastics [FRP] , i.e. characterised by their special construction from such materials
• CPC Class Codes: G05G 1/12 Means for securing the members on rotatable spindles or the like
• CPC Class Codes: Y02E 60/16 Mechanical energy storage, e.g. flywheels or pressurised fluids
• CPC Class Codes: Y10T 74/212 Containing fiber or filament

Abstract

The invention relates to rotary inertial energy storage devices comprised of wound filaments or discrete rings of essentially anisotropic material formed into a rim or disc-like configuration. Pairs of adjacent rings or windings in any given plane perpendicular to the axis of rotation of the present structure are tied or bonded together at discrete peripheral points at selected locations while adjacent rings which are not bound at these first-mentioned tie points are tied together at other peripheral points interdigitated between said first-mentioned tie points. These points of connection extend linearly throughout the structure.

Claims

1. An inertial energy storage device for rotation about a shaft comprising:

rim means carried on the shaft and comprised of a plurality of annular rim elements formed of essentially anisotropic material having substantial tensile strength along longitudinal axes thereof; and

,

means for holding certain of the rim elements together at selected locations of the rims means, said means being located along at least one radius extending from the axis of rotation of the rim means and being disposed at alternate intersections of the radius and the physical interfaces between the rim elements.

2. The inertial energy storage device of claim 1 and further comprising hub means for carrying the rim means, the hub means being attached to the shaft.

3. The inertial energy storage device of claim 1 wherein the last-mentioned means are disposed along a plurality of radii extending from the axis of rotation of the rim means, the radii being offset from each other at regular angles.

4. The inertial energy storage device of claim 3 wherein at least certain of the last-mentioned means which lie along certain of the radii are disposed between rim elements which are not held by other of the last-mentioned means at the intersections of said rim elements and adjacent radii.

5. The inertial energy storage device of claim 4 wherein the last-mentioned means lie along radii which are offset from each other at 60°

angles.

6. The inertial energy storage device of claim 1 wherein the rim elements comprise filament windings.

7. The inertial energy storage device of claim 1 wherein the rim elements comprise discrete rings.

8. The inertial energy storage device of claim 1 wherein the last-mentioned means comprise adhesive material which join the rim elements together at selected locations on the rim elements.

9. The inertial energy storage device of claim 1 wherein the annular rim elements are formed into layers, the axis of rotation of the device forming a line of centers of the layers, the last-mentioned means extending continuously through the rim means along lines parallel to the axis of rotation.

10. An inertial energy storage device for rotation about a shaft comprising:

rim means carried on the shaft and comprised of a plurality of annular rim elements formed of essentially anisotropic material having essential tensile strength along longitudinal axes thereof, the annular rim elements being formed into layers, the axis of rotation of the device forming a line of centers of the layers, and,

means for holding certain of the rim elements together at selected locations of the rim means, said means extending continuously throughout the rim means along lines parallel to the axis of rotation.

11. The inertial energy storage device of claim 10 and further comprising hub means for carrying the rim means, the hub means being attached to the shaft.

12. The inertial energy storage device of claim 10 wherein the last-mentioned means are disposed in a plurality of radial planes extending from the axis of rotation of the rim means, the radial planes being offset from each other at regular angles.

13. The inertial energy storage device of claim 12 wherein at least certain of the last-mentioned means which lie in certain of the radial planes are disposed between rim elements which are not held by other of the last-mentioned means at the intersections of said rim elements and adjacent radial planes.

14. The inertial energy storage device of claim 13 wherein the last-mentioned means lie along radii which are offset from each other at 60°

angles.

15. The inertial energy storage device of claim 10 wherein the rim elements comprise filament windings.

16. The inertial energy storage device of claim 10 wherein the rim elements comprise discrete rings.

17. The inertial energy storage device of claim 10 wherein the last-mentioned means comprise adhesive material which join the rim elements together at selected locations on the rim elements.