US3971315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Macroporous microporous marking structure
Assignee: FIRST SOURCE FINANCIAL LLP
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Filing: 1974-08-12
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Granted: 1976-07-27
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Expires: 1994-08-12
Abstract
Abstract A marking structure for various uses, such as in hand stamps or other printing members, or in ink pads, ink rolls or other inking members. The marking structure is characterized by at least two layers, including an outer layer and an underlying reservoir layer. The outer layer has interconnected aggregates of thermoplastic resin, forming a microporous network of pores, and a marking fluid contained within the network. The reservoir layer has an open-pored macroporous structure, such as an open-cell polyurethane foam, impregnated with a microporous thermoplastic resin, in the form of interconnected aggregates, and an additional amount of the marking fluid. The resin aggregates of the outer and reservoir layers are joined at the interface of the layers to form a cohesive structure.
Inventors
- 👤 Frederick C. Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:39
CPC Classifications
B; B41; B41N; B41N1/00; B41N1/12; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/24996; Y10T428/249975; Y10T428/249978; Y10T428/249979; Y10T428/249981; Y10T428/249994; Y10T428/249995; Y10T428/249996
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
157 words
A multi-layered marker comprising: an outer layer having a microporous material formed of aggregated particles of plasticized thermoplastic resin, said aggregated particles forming a substantially uniform cohesive structure defining a network of pores, and a marking fluid contained within said network, said fluid being substantially incompatible with said resin; and a reservoir layer underlying said outer layer and comprising an open-pored macroporous elastomeric structure, a microporous material impregnated within said macroporous structure, said microporous material being formed of aggregated particles of plasticized thermoplastic resin and defining within said macroporous structure a network of pores, and a marking fluid contained within said network, said fluid being substantially incompatible with the thermoplastic resin of said reservoir and outer layers, said aggregated particles of said reservior and outer layers being interconnected to join the layers, permitting the continuous passage of marking fluid from the network of pores of said reservoir layer to the network of pores of said outer layer.
Claim 2
Dependent Claim
157 words
A multi-layered marker comprising: an outer layer having a microporous material formed of aggregated particles of plasticized thermoplastic resin, said aggregated particles forming a substantially uniform cohesive structure defining a network of pores, and a marking fluid contained within said network, said fluid being substantially incompatible with said resin; and a reservoir layer underlying said outer layer and comprising an open-pored macroporous elastomeric structure, a microporous material impregnated within said macroporous structure, said microporous material being formed of aggregated particles of plasticized thermoplastic resin and defining within said macroporous structure a network of pores, and a marking fluid contained within said network, said fluid being substantially incompatible with the thermoplastic resin of said reservoir and outer layers, said aggregated particles of said reservior and outer layers being interconnected to join the layers, permitting the continuous passage of marking fluid from the network of pores of said reservoir layer to the network of pores of said outer layer.
Claim 3
Dependent Claim
19 words
The marking structure of claim 1 wherein said outer layer is of thickness substantially less than said reservoir layer.
Claim 4
Dependent Claim
14 words
The marking structure of claim 1 wherein said macroporous structure is a thermoset foam.
Claim 5
Dependent Claim
18 words
The marking structure of claim 3 wherein said resilient material comprises a network of interconnected strands of polyurethane.
Claim 6
Dependent Claim
43 words
The marking structure of claim 1 wherein said thermoplastic resin of said outer and reservoir layers is a resin selected from the group consisting of polyvinyl chloride, polyvinyl acetate, polyvinylidene chloride, copolymers of vinyl chloride and other ethylenically unsaturated monomers, and combinations thereof.
Claim 7
Dependent Claim
28 words
The marking structure of claim 5 wherein said thermoplastic resin of said outer and reservoir layers consists essentially of copolymers of vinyl chloride and other ethylenically unsaturated monomers.
Claim 8
Dependent Claim
41 words
The marking device of claim 3 wherein said thermoplastic resin of said outer and reservoir layers is selected from the group consisting of polyvinyl chloride, polyvinyl acetate, polyvinylidene chloride, copolymers of vinyl chloride and other ethylenically unsaturated monomers and combinations thereof.
Claim 9
Dependent Claim
28 words
The marking structure of claim 7 wherein said thermoplastic resin of said outer and reservoir layers consists essentially of copolymers of vinyl chloride and other ethylenically unsaturated monomers.
Claim 10
Dependent Claim
43 words
The marking structure of claim 4 wherein said thermoplastic resin of said outer and reservoir layers in a resin selected from the group consisting of polyvinyl chloride, polyvinyl acetate, polyvinylidene chloride, copolymers of vinyl chloride and other ethylenically unsaturated monomers, and combinations thereof.
Claim 11
Dependent Claim
28 words
The marking structure of claim 9 wherein said thermoplastic resin of said outer and reservoir layers consists essentially of copolymers of vinyl chloride and other ethylenically unsaturated monomers.
Claim 12
Dependent Claim
36 words
The marking structure of claim 1 wherein the weight ratio of marking fluid to plasticized resin in said reservoir layer is greater than the weight ratio of marking fluid to plasticized resin in said outer layer.
Claim 13
Dependent Claim
48 words
The marking structure of claim 11 wherein the weight ratio of marking fluid to plasticized resin in said reservoir layer is within the range of about 0.2-4.0 and the weight ratio of marking fluid to plasticized resin in said outer layer is within the range of about 0.1-1.0.
Claim 14
Dependent Claim
48 words
The marking structure of claim 12 wherein the weight ratio of marking fluid to plasticized resin in said reservoir layer is within the range of about 0.6-2.0 and the weight ratio of marking fluid to plasticized resin in said outer layer is within the range of about 0.3-0.7.
Claim 15
Dependent Claim
41 words
The marking structure of claim 11 wherein the weight ratio of marking fluid to plasticized resin in said reservoir layer is at least about 50 percent greater than the weight ratio of marking fluid to plasticized resin in said outer layer.
Claim 16
Dependent Claim
40 words
The marking structure of claim 14 wherein the weight ratio of marking fluid to plasticized resin in said reservoir is at least about 120 percent greater than the weight ratio of marking fluid to plasticized resin in said outer layer.
Claim 17
Dependent Claim
39 words
The marking structure of claim 2 wherein said outer layer comprises a base layer and a layer of printing characters integrally extending therefrom, said base layer being of thickness approximately equivalent to the thickness of said layer of characters.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-27 | 1980-01-26 | 1980-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-27 | 1984-01-26 | 1984-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-27 | 1988-01-26 | 1988-07-27 | $7700.00 | Window Closed / Lapsed |