Patent US3746256A successfully refreshed from Google Patents.
US3746256A
Expired / Lapsed
US
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Apparatus for producing a pulse of liquid for machining operations
Assignee: EXOTECH
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Filing: 1971-04-19
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Granted: 1973-07-17
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Expires: 1991-04-19
Abstract
Abstract Apparatus for producing a high velocity jet pulse of liquid suitable for cutting or fracturing such materials as rock, metal, concrete and wood. A barrel is provided with a bore that intersects a rotatable valve which in a first position receives a liquid or gel charge and which in a second position is colinear with the barrel bore. Compressed gas expells the charge from the barrel through a nozzle to form a pulsed jet of liquid. Means can be provided for positioning the nozzle adjacent an extrusion as it issues from an extruder, permitting on-line cutting of the extrusion and for rotating the nozzle about a horizontal axis to permit operation at the optimum angle of cut.
Inventors
- 👤 J Hall
- 👤 L Clipp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:45
CPC Classifications
E; E21; E21C; E21C25/00; E21C25/60; B; B02; B02C; B02C19/00; B26; B26F; B26F3/00; B26F3/004; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0591; Y10T83/364
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
234 words
Apparatus for forming a high velocity pulsed charge of liquid comprising: a source of charge material; a pressurized fluid source having an outlet; first valve means connected to said pressurized fluid source outlet for controlling passage of fluid therefrom; expulsion barrel means having a bore with an inlet communicatively coupled with said first valve means for receipt of fluid under pressure therefrom and with an outlet and including second valve means intermediate the bore inlet and the bore outlet and capable alternatively of assuming a first condition in which said second valve means is communicatively coupled with said source of charge material for receipt of charge material therefrom and of assuming a second condition in which said second valve means is communicatively coupled with said expulsion barrel means bore to permit passage of charge material therethrough; and an automatic control unit which sequentially: a. causes said second valve means to assume the first condition; b. actuates said source of charge material to pass charge material from said source of charge material to said second valve means; c. causes said second valve means to assume the second condition; and d. actuates said first valve means to pass a pulse of fluid under pressure from said pressurized fluid source through said first valve means, said expulsion barrel means bore inlet, said second valve means, and said expulsion barrel means bore outlet to expel charge material therefrom.
Claim 2
Dependent Claim
234 words
Apparatus for forming a high velocity pulsed charge of liquid comprising: a source of charge material; a pressurized fluid source having an outlet; first valve means connected to said pressurized fluid source outlet for controlling passage of fluid therefrom; expulsion barrel means having a bore with an inlet communicatively coupled with said first valve means for receipt of fluid under pressure therefrom and with an outlet and including second valve means intermediate the bore inlet and the bore outlet and capable alternatively of assuming a first condition in which said second valve means is communicatively coupled with said source of charge material for receipt of charge material therefrom and of assuming a second condition in which said second valve means is communicatively coupled with said expulsion barrel means bore to permit passage of charge material therethrough; and an automatic control unit which sequentially: a. causes said second valve means to assume the first condition; b. actuates said source of charge material to pass charge material from said source of charge material to said second valve means; c. causes said second valve means to assume the second condition; and d. actuates said first valve means to pass a pulse of fluid under pressure from said pressurized fluid source through said first valve means, said expulsion barrel means bore inlet, said second valve means, and said expulsion barrel means bore outlet to expel charge material therefrom.
Claim 3
Dependent Claim
53 words
Apparatus as claimed in claim 1 in which said source of charge material comprises: a charge reservoir; charge supply means responsive to said control means for supplying charge material to said charge reservoir; and ram means responsive to said control means for moving charge mateRial within said reservoir into said second valve means.
Claim 4
Dependent Claim
49 words
Apparatus as claimed in claim 2 in which said source of charge material further comprises wax supply means for supplying wax to said charge reservoir intermediate said ram means and said charge supply means to cause wax to enter and seal said second valve means after the charge material.
Claim 5
Dependent Claim
66 words
Apparatus as claimed in claim 1 in which said second valve means comprises a rotatable valve having a bore therethrough and capable of rotating between a first position in which the valve bore is communicatively coupled with said source of charge material for receipt of charge material therefrom and a second position in which the valve bore is communicatively coupled with said expulsion barrel means bore.
Claim 6
Dependent Claim
69 words
Apparatus as claimed in claim 4 in which the expulsion barrel means bore is of a first diameter adjacent said pressurized fluid source and of a smaller diameter on the opposite side of said second valve means and in which the rotatable valve bore is tapered to provide a rotatable valve bore inlet end of the first diameter and a rotatable valve bore outlet end of the smaller diameter.
Claim 7
Dependent Claim
18 words
Apparatus as claimed in claim 1 further comprising a nozzle connected to said expulsion barrel means bore outlet.
Claim 8
Dependent Claim
257 words
Apparatus for cutting extrusions issuing from an extruder by means of a high velocity pulsed charge of liquid, said apparatus comprising: a source of charge material; a pressurized fluid source having an outlet; first valve means connected to said pressurized fluid source outlet for controlling passage of fluid therefrom; expulsion barrel means having a bore with an inlet communicatively coupled with said first valve means for receipt of fluid under pressure therefrom and with an outlet and including second valve means intermediate the bore inlet and the bore outlet and capable alternatively of assuming a first condition in which said second valve means is communicatively coupled with said source of charge material for receipt of charge material therefrom and of assuming a second condition in which said second valve means is communicatively coupled with said expulsion barrel means bore to permit passage of charge material therethrough; adjustment means for adjusting the vertical position of the expulsion barrel means outlet; and an automatic control unit which sequentially: a. causes said second valve means to assume the first condition; b. actuates said source of charge material to pass charge material from said source of charge material to said second valve means; c. causes said second valve means to assume the second condition; and d. actuates said first valve means to pass a pulse of fluid under pressure from said pressurized fluid source through said first valve means, said expulsion barrel means bore inlet, said second valve means, and said expulsion barrel means bore outlet to expel charge material therefrom.
Claim 9
Dependent Claim
257 words
Apparatus for cutting extrusions issuing from an extruder by means of a high velocity pulsed charge of liquid, said apparatus comprising: a source of charge material; a pressurized fluid source having an outlet; first valve means connected to said pressurized fluid source outlet for controlling passage of fluid therefrom; expulsion barrel means having a bore with an inlet communicatively coupled with said first valve means for receipt of fluid under pressure therefrom and with an outlet and including second valve means intermediate the bore inlet and the bore outlet and capable alternatively of assuming a first condition in which said second valve means is communicatively coupled with said source of charge material for receipt of charge material therefrom and of assuming a second condition in which said second valve means is communicatively coupled with said expulsion barrel means bore to permit passage of charge material therethrough; adjustment means for adjusting the vertical position of the expulsion barrel means outlet; and an automatic control unit which sequentially: a. causes said second valve means to assume the first condition; b. actuates said source of charge material to pass charge material from said source of charge material to said second valve means; c. causes said second valve means to assume the second condition; and d. actuates said first valve means to pass a pulse of fluid under pressure from said pressurized fluid source through said first valve means, said expulsion barrel means bore inlet, said second valve means, and said expulsion barrel means bore outlet to expel charge material therefrom.
Claim 10
Dependent Claim
53 words
Apparatus as claimed in claim 7 in which said source of charge material comprises: a charge reservoir; charge supply means responsive to said control means for supplying charge material to said charge reservoir; and ram means responsive to said control means for moving charge material within said reservoir into said second valve means.
Claim 11
Dependent Claim
49 words
Apparatus as claimed in claim 8 in which said source of charge material further comprises wax supply means for supplying wax to said charge reservoir intermediate said ram means and said charge supply means to cause wax to enter and seal said second valve means after the charge material.
Claim 12
Dependent Claim
66 words
Apparatus as claimed in claim 7 in which said second valve means comprises a rotatable valve having a bore therethrough and capable of rotating between a first position in which the valve bore is communicatively coupled with said source of charge material for receipt of charge material therefrom and a second position in which the valve bore is communicatively coupled with said expulsion barrel means bore.
Claim 13
Dependent Claim
69 words
AppAratus as claimed in claim 10 in which the expulsion barrel means bore is of a first diameter adjacent said pressurized fluid source and of a smaller diameter on the opposite side of said second valve means and in which the rotatable valve bore is tapered to provide a rotatable valve bore inlet end of the fist diameter and a rotatable valve bore outlet end of the smaller diameter.
Claim 14
Dependent Claim
18 words
Apparatus as claimed in claim 7 further comprising a nozzle connected to said expulsion barrel means bore outlet.
Claim 15
Dependent Claim
32 words
Apparatus as claimed in claim 7 further comprising rotation means for rotating the expulsion barrel means outlet about a horizontal axis to cause adjustment of the angle at which extrusions are cut.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |