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US 6,470,715 B1Granted
Dyeing apparatus for carrying out laboratory tests
AssigneeColor Service SRL
InventorsFabrizio Toschi, Antonello Turle
Life of this patent
Estimating the term…
Abstract
The dyeing apparatus for carrying out laboratory tests comprises a dyeing chamber which can be sealingly coupled to at least one portion of the fabric to be dyed, means being additionally provided for displacing the dyeing liquid, adapted to carry out a sequence of alternate passages of the dyeing liquid through said fabric to be dyed.
Claims9
An apparatus for dyeing a fabric comprising:
- a dyeing chamber sealingly engageable with a fabric to be dyed and defining a space opening onto said fabric;
- a hopper containing a dyeing liquid for supplying said space;
- a distribution unit communicating with said space at a lower side of said distribution unit;
- a loading valve connected between said hopper and said distribution unit;
- an expansion chamber connected to an upper part of said distribution unit;
- a heater assigned to said distribution unit for heating dyeing liquid therein;
- a thermometric probe in said distribution unit for controlling said heater;
- and
- means for displacing said dyeing liquid to draw said dyeing liquid from said expansion chamber through said fabric in one direction and displace said dyeing liquid through said fabric in an opposite direction into said expansion chamber alternately and repeatedly.
6 more elements
An apparatus for dyeing a fabric comprising:
- a dyeing chamber having an upper half sealingly engageable with an upper side of a fabric to be dyed and a lower half sealingly engageable with a lower side of said fabric, said upper and lower halves defining a space opening onto said fabric;
- a hopper containing a dyeing liquid for supplying said space;
- a distribution unit communicating with said space at a lower side of said distribution unit;
- a loading valve connected between said hopper and said distribution unit;
- an expansion chamber connected to an upper part of said distribution unit;
- and
- means for displacing said dyeing liquid to draw said dyeing liquid from said expansion chamber through said fabric in one direction and displace said dyeing liquid through said fabric in an opposite direction into said expansion chamber alternately and repeatedly, said means for displacing including:
- a compensation chamber communicating with said space at said lower half, and
- a driving piston and a driving cylinder connected to said compensation chamber for drawing said dyeing liquid into and displacing said dyeing liquid from said compensation chamber.
6 more elements
An apparatus for dyeing a fabric comprising:
- a fabric tensioner having an outer ring and an inner ring clamping said fabric between them whereby said fabric is tensioned across said inner ring;
- a dyeing chamber having an upper half sealingly engageable with an upper side of said fabric within said ring and a lower half sealingly engageable with a lower side of said fabric within said ring, said upper and lower halves defining a space opening onto said fabric on opposite sides thereof;
- a hopper containing a dyeing liquid for supplying said space;
- a distribution unit communicating with said space at a lower side of said distribution unit;
- a loading valve connected between said hopper and said distribution unit;
- an expansion chamber connected to an upper part of said distribution unit;
- and
- means for displacing said dyeing liquid to draw said dyeing liquid from said expansion chamber through said fabric in one direction and displace said dyeing liquid through said fabric in an opposite direction into said expansion chamber alternately and repeatedly.
5 more elements
Dependencies are inferred from the claim text.