Rotary knob for thermostatic valves of radiators
AssigneeDanfoss A/S
InventorsAage Molgaard, Niels P. G. Graversen
Life of this patent
Estimating the term…
Abstract
The invention relates to a manually setable, knob-type thermostatic control assembly for radiator valves. The knob normally has a fixed or usual setting to provide a desired temperature for a room. Occasionally the setting is temporarily changed for one reason or another and the unit must be reset to its usual setting. This is facilitated herein and in the prior art by providing index markings on the relatively rotatable members. The novelty herein, however, is in providing a cap for the rotatable knob member which carries the index marking and the cap is readily adjustable relative to rotatable member in a simple manner without detaching the cap from the knob member.
Claims5
A thermostatic control assembly for radiator valves, comprising, a chassis member adapted to be attached to a valve casing, said chassis having an index marking, a generally cylindrically shaped knob surrounding said chassis member, said knob having index marking which is related to said index marking on said chassis, thread means between said knob and said chassis member to facilitate axial movement for said knob, a thermostatic operating unit disposed internally of said knob and attached thereto, said operating unit having an axially movable valve actuating rod, an end cap, said end cap and said knob having internal serrations for coupling purposes, a ring member for adjustably attaching said cap to said knob, said ring member having circumferentially arranged sets of rigid and resilient teeth engaging said serrations, said resilient teeth allowing relative rotatable adjustments between said knob and said cap without relative axial movement therebetween to allow adjustments involving said index markings of said chassis member and said knob.
Dependencies are inferred from the claim text.