Patent US4807982A successfully refreshed from Google Patents.
Patent US3782631A successfully refreshed from Google Patents.
US3782631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silica welding apparatus
Assignee: Beazer East Inc
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Filing: 1972-06-21
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Granted: 1974-01-01
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Expires: 1992-06-21
Abstract
Abstract A novel apparatus includes a cylindrical canister in which internal piping carries a gas that pressurizes a quantity of silica, preferably sand, therein. A nozzle at the bottom of the canister receives the silica under control of a valve, and the oxygen flowing into the canister and through the nozzle carries the silica to a torch tip where the silica melts in an oxy-fuel flame burning thereat. The oxygen propels the molten silica into cracks and openings in need of filling for repairs.
Inventors
- 👤 A Brockly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:21
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/14; B05B7/1404; B05B13/00; B05B7/1463
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
227 words
A silica welding apparatus comprising: a. a canister having a top and a bottom, said top having an opening closed and sealed by a removable cap, and said bottom being funnel shaped; b. means supporting said canister in an upright position; c. a first conduit entering said canister and having a perforated end portion terminating adjacent said top; d. a hood surrounding in spaced-apart relation said perforated terminal end portion; e. a second conduit communicating with the interior of said canister at the bottom; f. a valve installed in said second conduit for regulating the flow of material from said canister; g. a nozzle device installed in said second conduit including 1. a nozzle block having a cavity therein, 2. a pair of axially aligned fixed conduits extending thereinto and terminating in close proximity therein, and 3. a clean-out plug removably fastened thereinto for cleaning out said nozzle device; h. third conduit means communicating with said first conduit and said nozzle device; i. fourth conduit means communicating with said nozzle device and a silica welding torch; and j. means for conveying a carrier gas under pressure in said first conduit, whereby the interior of said canister is pressurized, and in said second and third conduits whereby material disposed in said canister is carried by said pressurized carrier gas therefrom through said valve when opened into said torch.
Claim 2
Dependent Claim
227 words
A silica welding apparatus comprising: a. a canister having a top and a bottom, said top having an opening closed and sealed by a removable cap, and said bottom being funnel shaped; b. means supporting said canister in an upright position; c. a first conduit entering said canister and having a perforated end portion terminating adjacent said top; d. a hood surrounding in spaced-apart relation said perforated terminal end portion; e. a second conduit communicating with the interior of said canister at the bottom; f. a valve installed in said second conduit for regulating the flow of material from said canister; g. a nozzle device installed in said second conduit including 1. a nozzle block having a cavity therein, 2. a pair of axially aligned fixed conduits extending thereinto and terminating in close proximity therein, and 3. a clean-out plug removably fastened thereinto for cleaning out said nozzle device; h. third conduit means communicating with said first conduit and said nozzle device; i. fourth conduit means communicating with said nozzle device and a silica welding torch; and j. means for conveying a carrier gas under pressure in said first conduit, whereby the interior of said canister is pressurized, and in said second and third conduits whereby material disposed in said canister is carried by said pressurized carrier gas therefrom through said valve when opened into said torch.
Claim 3
Dependent Claim
16 words
a pair of axially aligned fixed conduits extending thereinto and terminating in close proximity therein, and
Claim 4
Dependent Claim
16 words
a pair of axially aligned fixed conduits extending thereinto and terminating in close proximity therein, and
Claim 5
Dependent Claim
93 words
In a silica welding apparatus, the improvement comprising: a. a nozzle device installed in a conduit carrying silica material and through which fluid under pressure passes, including b. a nozzle block having a cavity therein; c. a pair of axially aligned fixed conduits for carrying said fluid extending into said cavity and terminating therewithin in close proximity; d. a clean-out plug removably fastened into said nozzle block for cleaning out said cavity in said nozzle block; and e. an opening in said nozzle block through which said silica material passes into said cavity.
Claim 6
Dependent Claim
93 words
In a silica welding apparatus, the improvement comprising: a. a nozzle device installed in a conduit carrying silica material and through which fluid under pressure passes, including b. a nozzle block having a cavity therein; c. a pair of axially aligned fixed conduits for carrying said fluid extending into said cavity and terminating therewithin in close proximity; d. a clean-out plug removably fastened into said nozzle block for cleaning out said cavity in said nozzle block; and e. an opening in said nozzle block through which said silica material passes into said cavity.
Claim 7
Dependent Claim
90 words
a clean-out plug removably fastened thereinto for cleaning out said nozzle device; h. third conduit means communicating with said first conduit and said nozzle device; i. fourth conduit means communicating with said nozzle device and a silica welding torch; and j. means for conveying a carrier gas under pressure in said first conduit, whereby the interior of said canister is pressurized, and in said second and third conduits whereby material disposed in said canister is carried by said pressurized carrier gas therefrom through said valve when opened into said torch.
Claim 8
Dependent Claim
90 words
a clean-out plug removably fastened thereinto for cleaning out said nozzle device; h. third conduit means communicating with said first conduit and said nozzle device; i. fourth conduit means communicating with said nozzle device and a silica welding torch; and j. means for conveying a carrier gas under pressure in said first conduit, whereby the interior of said canister is pressurized, and in said second and third conduits whereby material disposed in said canister is carried by said pressurized carrier gas therefrom through said valve when opened into said torch.
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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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |