LOCKING ASSEMBLY FOR HIGH-SPEED SHAFTS

• US 3,622,185 A
• Filed: 06/02/1969
• Issued: 11/23/1971
• Est. Priority Date: 06/02/1969
• Status: Expired due to Term

• Current Assignee: Citicorp Credit Services Incorporated (Citigroup Incorporated)
• Original Assignee: Rosan Engineering Corporation
• Inventors: Rosan, Jose Sr., Weber, Robert D., Reece, Marvin P.
• Primary Examiner(s): Williamnowsky, David J.
• Assistant Examiner(s): Kundrat, Andrew V.
• Application Number:
  US04/834,199
• Time in Patent Office: 904 Days
• Field of Search: 287/53,52.07 151/8,28,29 64/9
• US Class Current: 403/316
• CPC Class Codes: F16B 2200/403 Threaded clamping parts
• CPC Class Codes: F16B 2200/69 Redundant disconnection blocking means
• CPC Class Codes: F16D 1/06 for attachment of a member on a shaft or on a shaft-end attachment of marine propellers on shafts B63H23/34
• CPC Class Codes: F16D 2001/062 characterised by adaptors where hub bores being larger than the shaft
• CPC Class Codes: Y10S 411/926 Positive lock

Abstract

A substantially unitary or integral locking assembly for securely locking members onto a high-speed shaft by a locking nut threadedly engaged with said high-speed shaft and a locking sleeve which is attached to said locking nut by a swaged portion thereof while in simultaneous splined engagement with said locking nut and said high-speed shaft.

Claims

1. A locking assembly for maintaining members in interengaged connection with a high-speed shaft, comprising:

shaft means, said shaft means provided with a plurality of engagement means comprised of an internal helical thread and serrations extending longitudinally relative to the axis of the shaft means superimposed over said thread;

nut means, said nut means provided with abutment means and a plurality of engagement means comprised of a helical thread and a plurality of serrations longitudinally extending relative to the axis of said shaft means, the helical thread thereof being interengaged with the helical thread of said shaft means;

sleeve means, said sleeve means provided with a plurality of engagement means longitudinally spaced from each other and comprised of serrations longitudinally extending relative to the axis of the shaft means, one of said serration means being interengaged with the serration means of said shaft means and another of which is engaged with the serration means of said nut means, said sleeve means having a locking means engaged with said nut means for locking said sleeve means onto said nut means, said sleeve means further having means for removal of said sleeve means from said nut means and from said shaft means.

2. A locking assembly for maintaining members in interengaged connection with a high-speed shaft as described in claim 1, wherein said nut means are concentrically positioned within said shaft means and the abutment means thereof abuts against an internal abutment shoulder carRied by the shaft.

3. A locking assembly for maintaining members in interengaged connection with a high-speed shaft as described in claim 1, wherein the helical thread of said nut is external and a portion of the serrations of said nut are disposed externally about the periphery of said nut means and a portion thereof disposed about the inner periphery of said nut means.

4. A locking assembly for maintaining members in interengaged connection with a high-speed shaft as described in claim 1, wherein the engagement means of the shaft means and the nut means which are interengaged are external helical threads carried by the shaft means and internal helical threads carried by the nut means.

5. A locking assembly for maintaining members in interengaged connection with a high-speed shaft as described in claim 1, wherein the shaft means and the nut means which are interengaged by internal helical threads carried by the shaft means and external helical threads carried by the nut means.

6. A locking assembly for maintaining members in interengaged connection with a high-speed shaft as described in claim 1, wherein the sleeve means are concentrically positioned within said shaft means and said nut means.

7. A locking assembly for maintaining members in interengaged connection with a high-speed shaft as described in claim 6, wherein said serrations of said sleeve means are positioned about the external surface of the sleeve means.

8. A locking assembly for maintaining members in interengaged connection with a high-speed shaft as described in claim 7, wherein the shaft means and the sleeve means are interengaged by internal serrations carried by the shaft means and a portion of the external serrations carried by the sleeve means, and wherein the nut means are interengaged with the sleeve means by internal serrations carried by the nut means and a portion of the other serrations carried by the sleeve means.

9. A locking assembly for maintaining members in interengaged connection with a high-speed shaft, comprising:

shaft means, said shaft means provided with a plurality of engagement means comprised of a helical thread and serrations extending longitudinally relative to the axis of the shaft means;

nut means, said nut means provided with abutment means and a plurality of engagement means comprised of a helical thread and a plurality of serrations longitudinally extending relative to the axis of said shaft means, the helical thread thereof being interengaged with the helical thread of said shaft means;

sleeve means, said sleeve means provided with a plurality of engagement means longitudinally spaced from each other and comprised of serrations longitudinally extending relative to the axis of the shaft means, one of said serration means being interengaged with the serration means of said shaft means and another of which is engaged with the serration means of said nut means, said sleeve means having at least a portion of the circumference of the end portion thereof displaced into intimate engagement with said nut means for locking said sleeve means onto said nut means, said sleeve means further having means for removal of said sleeve means from said nut means and from said shaft means.

10. A locking assembly for maintaining members in interengaged connection with a high-speed shaft as described in claim 9, wherein the end portion of the sleeve means is flared outwardly.

11. A locking assembly for maintaining members in interengaged connection with a high-speed shaft as described in claim 9, wherein the end portion of the sleeve means is flared inwardly.

12. A locking assembly for maintaining members in interengaged connection with a high-speed shaft as described in claim 9, wherein the engagement means of the nut means interengaged with the engagement means of the sleeve means are external serrations carried by the nut means and a plurality of second serrations carried by the sleeve means, and wherein the diameter of the sleeve means across the dIsplaced end portion thereof is less than the maximum diameter across the external serrations carried by the nut means.

13. A locking assembly for maintaining members in interengaged connection with a high-speed shaft as described in claim 9, wherein the engagement means of the nut means interengaged with the engagement means of the sleeve means are internal serrations carried by the nut means and a plurality of second serrations carried by the sleeve means, and wherein the diameter of the sleeve means across the displaced end portion thereof is greater than the maximum diameter across the internal serrations carried by the nut means.

14. A locking assembly for maintaining members in interengaged connection with a high-speed shaft as described in claim 12, wherein said end portion of the sleeve means is longitudinally slotted relative to the axis of the sleeve means so as to form a plurality of flexible segments.

15. A locking assembly for maintaining members in interengaged connection with a high-speed shaft as described in claim 9, wherein the locking means provided by said sleeve means is comprised of an external annular groove carried by the nut means and an internal annular groove carried by the sleeve means and outwardly expandable ring means simultaneously accommodated in said grooves.

16. A locking assembly for maintaining members in interengaged connection with a high-speed shaft as described in claim 15, wherein the radial depth of the annular groove provided by the sleeve means does not exceed the radial dimension of the ring thickness.

17. A locking assembly for maintaining members in interengaged connection with a high-speed shaft as described in claim 9, wherein the removal means of said sleeve means is a laterally extending flange positioned at the end of said sleeve opposite the lead end thereof.

18. A locking assembly for maintaining members in interengaged connection with a high-speed shaft as described in claim 17, wherein said flange is outwardly extending from said sleeve.

19. A locking assembly for maintaining members in interengaged connection with a high-speed shaft as described in claim 17, wherein said flange is inwardly extending from said sleeve.