04165713 is referenced by 42 patents and cites 7 patents.

A retractable leash for dogs and like pets includes a housing having a generally cylindrical cavity in which a rotatable reel is mounted and spring biased in one direction with a flexible leash member wound on the reel and extending externally of the housing and connected to a handle. The handle is defined by a resilient loop which encircles and resiliently biases into engagement with the housing for providing a compact arrangement when the leash is not in use.

Title
Retractable leash
Application Number
5/852502
Publication Number
4165713
Application Date
November 17, 1977
Publication Date
August 28, 1979
Inventor
James O Umphries
Victorville
CA, US
William H Brawner
El Cajon
CA, US
Agent
Brown & Martin
Assignee
H P G IV
CA, US
IPC
A01K 27/00
View Original Source