Abstract: A resistance device for providing resistance. The device includes a flexible pulling element, a resilient arrangement and a transmission. The resilient arrangement has a first portion and a second portion. The second portion is resiliently movable relative to the first portion. The transmission connects the flexible pulling element to the resilient arrangement such that pulling upon the flexible pulling element moves the second portion relative to the first portion, and upon release of the flexible pulling element the resilient arrangement retracts the flexible pulling element. The transmission is a reduction arrangement such that pulling the flexible pulling element a distance moves the second portion, relative to the first portion, no more than a proportion of the distance. The proportion is no more than half.

Abstract: A resistance device for providing resistance. The device includes a flexible pulling element, a resilient arrangement and a transmission. The resilient arrangement has a first portion and a second portion. The second portion is resiliently movable relative to the first portion. The transmission connects the flexible pulling element to the resilient arrangement such that pulling upon the flexible pulling element moves the second portion relative to the first portion, and upon release of the flexible pulling element the resilient arrangement retracts the flexible pulling element. The transmission is a reduction arrangement such that pulling the flexible pulling element a distance moves the second portion, relative to the first portion, no more than a proportion of the distance. The proportion is no more than half.

Abstract: An animal control unit comprising: a housing comprising at least two electrodes and an electronics module configured to controllably deliver an electrical stimulus to an animal wearing the animal control unit via said at least two electrodes, wherein the housing is shaped such that it rests on the upper side of the animal's neck when in use; a collar to which the housing is attached, the collar being configured for fitment around a neck of the animal to moveably retain the housing in a first position; and a biasing means configured to provide a self-righting force such that the housing is biased towards the first position during movement, and wherein at least one of said electrodes is a strip electrode comprising a strip portion shaped to rest along a natural contour of the animal's neck.

Abstract: A resistance device for providing resistance. The device includes a flexible pulling element, a resilient arrangement and a transmission. The resilient arrangement has a first portion and a second portion. The second portion is resiliently movable relative to the first portion. The transmission connects the flexible pulling element to the resilient arrangement such that pulling upon the flexible pulling element moves the second portion relative to the first portion, and upon release of the flexible pulling element the resilient arrangement retracts the flexible pulling element. The transmission is a reduction arrangement such that pulling the flexible pulling element a distance moves the second portion, relative to the first portion, not more than a proportion of the distance. The proportion is not more than half.