Patent ID: 8869885

Claim:
A downhole tool with a feedback arrangement comprising: a tool having a mandrel, a sleeve, at least one dog mounted relative to the mandrel and sleeve for radial extension and retraction, first and second reservoirs disposed between the mandrel and the sleeve, and one or more fluid outflow ports configured to exhaust fluid between the first and second reservoirs; and the feedback arrangement including an oscillator disposed within one of the first and second reservoirs and in operable communication with fluid flow of the fluid exhausted from the one or more fluid outflow ports during relative movement between the sleeve and mandrel, the oscillator interacting with exhausting fluid to cause the oscillator to oscillate to produce a signal receivable at a remote location indicative of engagement of the at least one dog at a selected downhole location, the oscillator including a spring mass that oscillates in response to fluid flow therepast to cause a vibration in the tool and a string supporting the tool.