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US 6,640,709 B1Granted
Ink pad having layer of compressed non-woven polypropylene filament and method of making
OwnerBobby Kenneth Lowranceinventor
Life of this patent
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Abstract
A substantially rigid ink pad assembly made of a first layer of a non-woven polypropylene filament bonded in an adhesive which is compressed and heated to a rigid form. The first layer is then thermally bonded to a thin layer of suede-like fabric which layered ink pad is contained in an open top tray.
Claims10
An ink pad assembly for use in a self-inking rubber stamp comprising:
- an ink pad including:
- a pad having a felted first layer of non-woven polypropylene filament bonded by a thermoplastic adhesive which is compressed under heat and pressure to achieve a reduction in thickness in a range between 5 and 20 percent and a substantially rigid consistency;
- and
- a second layer of thin suede-like fabric which is bonded to the first layer;
- and
- a tray which contains and surrounds the ink pad.
3 more elements
A method of making an ink pad for a stamp comprising the following steps:
- placing a layer of resilient outdoor carpet having an original thickness in a press;
- applying heat to the layer in a range between 200° Fahrenheit and 400° Fahrenheit for three to eight minutes;
- and
- applying pressure to the layer to compress the same to approximately 10% of said original thickness.
1 more element
An ink pad for use in a pre-inked stamp having a stamp layer comprising:
- a pad adapted to be positioned above the stamp layer, said pad having a felted layer of non-woven polypropylene filament bonded by an adhesive which is compressed under heat and pressure to achieve a reduction in thickness and a substantially rigid consistency;
- and
- a retention frame adapted to hold the pad and stamp layer in juxtaposed contacting relation.
Dependencies are inferred from the claim text.