Retractable leash

Patent metadata

Field	Value
Publication number	US-10034460-B2
Application number	US-201715628898-A
Country	US
Kind code	B2
Filing date	Jun 21, 2017
Priority date	Sep 5, 2012
Publication date	Jul 31, 2018
Grant date	Jul 31, 2018

Abstract

A retractable leash system includes a housing, a leash, a spool, and a brake. The spool is attached to the leash and disposed within the housing. The leash is configured to be rotationally biased so as to urge the leash into a spooled configuration. The brake includes an operating button, a compression spring, and a brake member coupled to the operating button. The brake member is associated with the compression spring and is configured to engage the spool by operation of the operating button, such that, when the brake is engaged, the spool is prevented from rotating in an unspooling direction and capable of rotating in a spooling direction.

First claim

What is claimed is:

1. A retractable leash system comprising:
a housing;
a leash;
a spool attached to the leash and disposed within the housing, the leash being configured to be rotationally biased so as to urge the leash into a spooled configuration; and
a brake including an operating button, a compression spring, and a brake member coupled to the operating button, the brake member being associated with the compression spring and configured to engage the spool by operation of the operating button, such that, when the brake is engaged, the spool is prevented from rotating in an unspooling direction and capable of rotating in a spooling direction.

2. The retractable leash of claim 1 , wherein
the spool is capable of spinning in the unspooling direction when the brake is not engaged with the spool.

3. The retractable leash of claim 1 , wherein
the spool further comprises a braking notch and a clearance area.

4. The retractable leash of claim 3 , wherein
the brake member is configured to abut the braking notch when the brake is engaged.

5. The retractable leash of claim 4 , wherein
the spool further comprises a cam surface, and the brake member is configured to traverse the cam surface when the brake member is engaged with the spool.

6. A retractable leash comprising:
a housing;
a leash;
a spool attached to the leash and disposed within the housing, the leash being configured to be rotationally biased so as to urge the leash into a spooled configuration; and
a brake including
an operating button,
a compression spring,
a first brake member coupled to the operating button, and
a second brake member configured to engage the spool,

the brake member being associated with the compression spring and configured to engage the spool by operation of the operating button, such that, when the brake is engaged, the spool is prevented from rotating in an unspooling direction and capable of rotating in a spooling direction.

7. The retractable leash of claim 6 , wherein
the first and second brake members are configured to be biased to engage the spool in cooperation with the compression spring.

8. The retractable leash of claim 1 , wherein
the compression spring is configured to bias the brake member in a direction toward the spool.

9. The retractable leash of claim 8 , wherein
the compression spring is a first compression spring and a second compression spring is configured to bias the operating member in a direction away from the spool.

10. The retractable leash of claim 1 , wherein
the compression spring is configured to bias the operating member in a direction away from the spool.

11. A retractable leash comprising:
a housing;
a spool disposed within the housing, the spool including a braking notch, a clearance area, and a cam surface;
a leash attached to the spool, the spool being rotationally biased to wind the leash upon the spool; and
a brake including an operating button and a brake member coupled to the operating button, the brake member configured to engage the spool by operation of the operating button, such that, when the brake is engaged, the spool is prevented from rotating in an unspooling direction and capable of rotating in a spooling direction, the brake, when activated, urging the brake member into the clearance area, the brake member configured to engage the braking notch when the spool is rotated in an unwinding direction, and to engage the cam surface when the spool is rotated in a winding direction.

12. The retractable leash of claim 11 wherein
the operating button is configured to be disposed into a locked position.

13. The retractable leash of claim 11 , wherein
the operating button is configured to be disposed into a free spooling position.

14. The retractable leash of claim 11 , wherein
operating button is configured to enable a leash retraction condition.

15. The retractable leash of claim 11 , wherein
the brake member includes an inclined surface.

16. The retractable leash of claim 15 , wherein
the inclined surface is configured to frictional engage the cam surface when the operating button is depressed.

17. The retractable leash of claim 11 , wherein
the brake includes a compression spring configured to bias the brake member in a direction toward the spool.

18. The retractable leash of claim 17 , wherein
the compression spring has a spring constant that enables the brake member to be biased in a radial direction away from the spool when traversing the cam surface.

19. The retractable leash of claim 17 , wherein
the compression spring is a first compression spring and a second compression spring is configured to bias the operating member in a direction away from the spool.

20. The retractable leash of claim 11 , wherein
the compression spring is configured to bias the operating member in a direction away from the spool.

Assignees

• Doskocil Mfg

Inventors

• O'Brien Carolyn
• Evans John C

Classifications

• B65H75/406

  hand-held during use (B65H75/48, B65H75/4473 take precedence) · CPC title

• B65H75/4431

  Manual stop or release button · CPC title

• A01K27/004 Primary

  Retractable leashes · CPC title