US3869988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Consolidating ballast
Assignee: BASF SE
•
Filing: 1974-05-24
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Granted: 1975-03-11
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Expires: 1994-05-24
Abstract
Abstract Ballast beneath a railroad track is consolidated by spraying binder into the ballast in the zones of operation of the tampering and ramming units during operation of the same.
Inventors
- 👤 Olaf Unbehaun
- 👤 Uwe Hampel
- 👤 Norbert Scholz
- 👤 Horst Gassmann
- 👤 Walter Schneider
- 👤 Heinz Hesser
- 👤 Walter Herrmann
- 👤 Bertold Bechert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:18
CPC Classifications
E; E01; E01B; E01B1/00; E01B1/001; E01B27/00; E01B27/12; E01B2204/00; E01B2204/03
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
47 words
A process for consolidating ballast in railroad track, wherein the ballast is tamped and rammed by mechanical means and, during the tamping and ramming operations, a binder for the ballast is sprayed into said ballast in liquid form in the zones of operation of said mechanical means.
Claim 2
Dependent Claim
47 words
A process for consolidating ballast in railroad track, wherein the ballast is tamped and rammed by mechanical means and, during the tamping and ramming operations, a binder for the ballast is sprayed into said ballast in liquid form in the zones of operation of said mechanical means.
Claim 3
Dependent Claim
47 words
A process for consolidating ballast in railroad track, wherein the ballast is tamped and rammed by mechanical means and, during the tamping and ramming operations, a binder for the ballast is sprayed into said ballast in liquid form in the zones of operation of said mechanical means.
Claim 4
Dependent Claim
47 words
A process for consolidating ballast in railroad track, wherein the ballast is tamped and rammed by mechanical means and, during the tamping and ramming operations, a binder for the ballast is sprayed into said ballast in liquid form in the zones of operation of said mechanical means.
Claim 5
Dependent Claim
16 words
A process as claimed in claim 1, wherein the binder used is an aqueous polymer dispersion.
Claim 6
Dependent Claim
26 words
A process as claimed in claim 2, wherein the aqueous polymer dispersion contains at least one copolymer of an acrylate or methacrylate with a C1-12 alkanol.
Claim 7
Dependent Claim
187 words
A process as claimed in claim 3, wherein the aqueous polymer dispersion substantially contains a. from 30 to 80 parts by weight of a1. an approx. 50 percent aqueous dispersion of a copolymer of approximately equal parts of n-butyl acrylate, vinyl acetate and vinyl chloride or a2. a copolymer of from 80 to 92 percent by weight of iso-octyl acrylate, from 7 to 17 percent by weight of acrylonitrile and from 1 to 3 percent by weight of a C3-5 Alpha , Beta -olefinically unsaturated carboxylic acid or a3. a copolymer of approx. equal parts of styrene and an acrylate containing from two to four carbon atoms in the alcohol radical with from 1 to 4 percent by weight of acrylic acid and b. from 20 to 60 parts by weight of b1. a 10-60 percent w/w aqueous dispersion of polyisobutylene having a molecular weight of from 50,000 to 200,000 or b2. a 30-50 percent w/w aqueous dispersion of a copolymer of from 60 to 80 percent of vinyl propionate and from 40 to 20 percent of vinyl chloride or b3. a mixture of (b1) and (b2).
Claim 8
Dependent Claim
14 words
A process as claimed in claim 2, wherein the aqueous polymer dispersion contains polyisobutylene.
Claim 9
Dependent Claim
20 words
A process as claimed in claim 1, wherein the binder used is bitumen in a molten, dispersed or dissolved form.
References Cited (Backward Citations)
US3417678A
Cited
US3656690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |