Patent US3784595A successfully refreshed from Google Patents.
US4029630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of structural elements
Assignee: Individual
•
Filing: 1974-05-03
•
Granted: 1977-06-14
•
Expires: 1994-05-03
Abstract
Abstract A product and a process for manufacturing the product, such as structural elements, wherein there is mixed together minerals as well as low melting metallic substances, to form a molding composition based on thermosetting phenolic resins. The mixed molding composition is then cured to form the product or structural elements.
Inventors
- 👤 Heinz Meinhold
- 👤 Antonin Lev
- 👤 Vlastislav Kunopik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:35
CPC Classifications
C; C04; C04B; C04B26/00; C04B26/02; C04B26/10; C04B26/12; C04B26/122
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
65 words
A process for manufacturing structural elements, consisting essentially of the steps of: mixing minerals as well as low melting metallic substances selected from the group consisting of lead, aluminum, tin, Wood's metal, and an aluminum composition composed of 86% aluminum, 13% silicon, and 1% iron, to form a molding composition based on thermosetting phenolic resin; and curing said molding composition to form such structural elements.
Claim 2
Dependent Claim
65 words
A process for manufacturing structural elements, consisting essentially of the steps of: mixing minerals as well as low melting metallic substances selected from the group consisting of lead, aluminum, tin, Wood's metal, and an aluminum composition composed of 86% aluminum, 13% silicon, and 1% iron, to form a molding composition based on thermosetting phenolic resin; and curing said molding composition to form such structural elements.
Claim 3
Dependent Claim
21 words
A process according to claim 1, wherein mineral sands having a grain diameter in a range of 2.0-0.08 millimeters are used.
Claim 4
Dependent Claim
25 words
A process according to claim 1, wherein mineral sands are used which contain a high foreign material component, such as up to 15-20% clay component.
Claim 5
Dependent Claim
23 words
A process according to claim 1, wherein mineral sands are used together with clay, having a moisture content at the pit of 8%.
Claim 6
Dependent Claim
80 words
A process for manufacturing structural elements, including the steps of: mixing minerals as well as low melting metallic substances to form a molding composition based on thermosetting phenolic resins; curing said molding composition to form said structural elements; prior to molding, the following substances are added in powdered form; 2% Wood's metal, composed of 27% lead, 13% tin, 50% bismuth, and 10% cadmium; 2% aluminum composition, composed of 86% aluminum, 13% silicon, and 1% iron; 1% tin; and 1% zinc.
Claim 7
Dependent Claim
80 words
A process for manufacturing structural elements, including the steps of: mixing minerals as well as low melting metallic substances to form a molding composition based on thermosetting phenolic resins; curing said molding composition to form said structural elements; prior to molding, the following substances are added in powdered form; 2% Wood's metal, composed of 27% lead, 13% tin, 50% bismuth, and 10% cadmium; 2% aluminum composition, composed of 86% aluminum, 13% silicon, and 1% iron; 1% tin; and 1% zinc.
Claim 8
Dependent Claim
66 words
A process according to claim 1, wherein, prior to molding, an inorganic binder of bonding clay of 160-80 micron particle size, is mixed with an organic binder of phenol resole resin, said resin having a viscosity from 3300-3700 centipoise at 20° C, and a combustion residue of 80%, and the mixing ratio of resin to powder bonding clay, at a temperature of 27° C, is 2:1.
Claim 9
Dependent Claim
43 words
A process according to claim 1, wherein there is included, prior to molding, a sand component having a grain diameter from 2.0-0.08 millimeters, and which may contain up to 20% clay and loam components, at an average moisture content of up to 20%.
Claim 10
Dependent Claim
95 words
A process for manufacturing structural elements, including the steps of: mixing minerals as well as low melting metallic substances to form a molding composition based on thermosetting phenolic resins; curing said molding composition to form said structural elements; the molding composition, prior to molding, is composed of the following components in parts by weight: 92 parts of an undried sand having a grain size of from 2.0-0.08 millimeters; 4 parts of phenol resole resin having a viscosity of 3500 centipoise at 20° C; 2 parts of bonding clay; and 2 parts of powdered Wood's metal.
Claim 11
Dependent Claim
95 words
A process for manufacturing structural elements, including the steps of: mixing minerals as well as low melting metallic substances to form a molding composition based on thermosetting phenolic resins; curing said molding composition to form said structural elements; the molding composition, prior to molding, is composed of the following components in parts by weight: 92 parts of an undried sand having a grain size of from 2.0-0.08 millimeters; 4 parts of phenol resole resin having a viscosity of 3500 centipoise at 20° C; 2 parts of bonding clay; and 2 parts of powdered Wood's metal.
Claim 12
Dependent Claim
123 words
A process for manufacturing structural elements, including the steps of: mixing minerals as well as low melting metallic substances to form a molding composition based on thermosetting phenolic resins; curing said molding composition to form said structural elements; wherein the molding composition is made up of the following components in parts by weight: 88 parts of sand; 3 parts of phenol resole resin having a viscosity of 9-11 centipoise at 20° C; 3 parts of phenol resole resin having a viscosity of 3300-3700 centipoise at 20° C; 1 part of toluene sulfonic acid in 65% solution; 2 parts of bonding clay; 2 parts of an aluminum composition metal powder composed of 86% aluminum, 13% silicon, and 1% iron; and 1 part powdered tin.
Claim 13
Dependent Claim
123 words
A process for manufacturing structural elements, including the steps of: mixing minerals as well as low melting metallic substances to form a molding composition based on thermosetting phenolic resins; curing said molding composition to form said structural elements; wherein the molding composition is made up of the following components in parts by weight: 88 parts of sand; 3 parts of phenol resole resin having a viscosity of 9-11 centipoise at 20° C; 3 parts of phenol resole resin having a viscosity of 3300-3700 centipoise at 20° C; 1 part of toluene sulfonic acid in 65% solution; 2 parts of bonding clay; 2 parts of an aluminum composition metal powder composed of 86% aluminum, 13% silicon, and 1% iron; and 1 part powdered tin.
Claim 14
Dependent Claim
11 words
A product produced in accordance with the process of claim 1.
Claim 15
Dependent Claim
11 words
A product produced in accordance with the process of claim 5.
Claim 16
Dependent Claim
11 words
A product produced in accordance with the process of claim 8.
Claim 17
Dependent Claim
11 words
A product produced in accordance with the process of claim 9.
References Cited (Backward Citations)
US3078249A
Cited
US3238601A
Cited
US3259947A
Cited
US3849356A
Cited
US3723368A
Cited
US3705872A
Cited
US3846366A
Cited
US3878142A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-13 | 1980-12-13 | 1981-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-13 | 1984-12-13 | 1985-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-13 | 1988-12-13 | 1989-06-14 | $7700.00 | Window Closed / Lapsed |