Patent US3833087A successfully refreshed from Google Patents.
US3833087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for generating acoustic waves by implosion
Assignee: IFP Energies nouvelles
•
Filing: 1972-01-11
•
Granted: 1974-09-03
•
Expires: 1992-01-11
Abstract
Abstract Device for generating acoustic waves by implosion comprising two stationary cylinders, two pistons solid with each other and each slidably mounted each in a separate cylinder but with different strokes so that one piston can be placed, by acting on the other piston, in a position of disengagement from the closed portion of its cylinder. A sealing arrangement is provided for insulating the last-mentioned cylinder from the external medium as long as its piston is not disengaged from the closed portion thereof. Intermittent communication between said closed portion of the cylinder and the external medium is established when the piston is displaced in said closed portion towards the bottom thereof.
Inventors
- 👤 J Cholet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:23
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/02; G01V1/133; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/791
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
123 words
A device for generating acoustic waves by implosion comprising: a first cylinder open at one end thereof and closed at the other end thereof, a first piston slidably mounted in said first cylinder, means for moving said first piston with respect to said first cylinder over a stroke longer than said first cylinder, sealing means provided on said first piston for insulating the cylinder portion between the closed end thereof and said first piston from an external medium during at least a stage of displacement of said first piston towards said open end of said first cylinder and means including a valve means provided in said first piston for establishing intermittent communication between the external medium and the interior of the first cylinder.
Claim 2
Independent Claim
123 words
A device for generating acoustic waves by implosion comprising: a first cylinder open at one end thereof and closed at the other end thereof, a first piston slidably mounted in said first cylinder, means for moving said first piston with respect to said first cylinder over a stroke longer than said first cylinder, sealing means provided on said first piston for insulating the cylinder portion between the closed end thereof and said first piston from an external medium during at least a stage of displacement of said first piston towards said open end of said first cylinder and means including a valve means provided in said first piston for establishing intermittent communication between the external medium and the interior of the first cylinder.
Claim 3
Dependent Claim
52 words
A device according to claim 1, wherein said means for establishing intermittent communication between the external medium and the interior of the first cylinder further includes at least one passageway provided through the body of said first piston, and wherein said valve means is a shut off valve provided in said passageway.
Claim 4
Dependent Claim
31 words
A device according to claim 2, wherein said shut off valve consists of a free ball in said passageway, and wherein stop members are provided in said passageway for said ball.
Claim 5
Dependent Claim
69 words
A device according to claim 1, wherein said means for establishing intermittent communication between the external medium and the interior of the first cylinder further include at least one duct arranged through the body of the first piston and provided with ports for communication between said external medium and the interior of said first cylinder, and wherein said valve means is a shut off valve disposed in said duct.
Claim 6
Dependent Claim
44 words
A device according to claim 1, wherein said sealing means includes at least one seal for obturating an annular passageway between said first cylinder and said first piston during the stage of displacement of the latter towards said open end of said first cylinder.
Claim 7
Dependent Claim
26 words
A device according to claim 1, wherein said sealing means consist of a seal of the lip type placed on the circumference of said first piston.
Claim 8
Dependent Claim
43 words
A device according to claim 1, wherein The means for moving said first piston with respect to said first cylinder comprises a second piston operatively connected with said first piston and slidably mounted in a second cylinder housed concentrically into said first cylinder.
Claim 9
Dependent Claim
55 words
A device according to claim 1, wherein the means for moving said first piston with respect to said first cylinder comprises a second piston operatively connected with said first piston and slidable in a second cylinder, extending from the open end of the first cylinder, in a direction opposite to that of said first cylinder.
Claim 10
Dependent Claim
69 words
A device according to claim 1, wherein said sealing means consists of at least one seal of the lip type said seal having a first portion affixed at the circumference of said first piston and a second portion disposed at an angle to said first portion, the free end of said second portion engaging said first cylinder whereby said lip type seal is deformable substantially in only one direction.
Claim 11
Dependent Claim
111 words
An acoustic wave generating device comprising: a cylinder provided with an open and closed end; a piston disposed in said cylinder; means for displacing said piston toward said closed end of said cylinder and out of said open end of said cylinder to allow an external medium to enter said cylinder; and sealing means provided on said piston for sealing said cylinder from the external medium during at least a portion of the displacement of said piston toward said open end of said cylinder including valve means in said piston for discharging the external medium from said cylinder upon the displacement of said piston toward said closed end of said cylinder.
Claim 12
Dependent Claim
111 words
An acoustic wave generating device comprising: a cylinder provided with an open and closed end; a piston disposed in said cylinder; means for displacing said piston toward said closed end of said cylinder and out of said open end of said cylinder to allow an external medium to enter said cylinder; and sealing means provided on said piston for sealing said cylinder from the external medium during at least a portion of the displacement of said piston toward said open end of said cylinder including valve means in said piston for discharging the external medium from said cylinder upon the displacement of said piston toward said closed end of said cylinder.
Claim 13
Dependent Claim
34 words
An acoustic wave generating device according to claim 10 wherein said sealing means further includes at least one passageway provided in said piston and a check valve disposed at one end of said passageway.
Claim 14
Dependent Claim
35 words
An acoustic wave generating device according to claim 11 wherein said check valve includes a ball member disposed in said passageway, said passageway being provided with means for limiting the displacement of said ball member.
Claim 15
Dependent Claim
27 words
An acoustic wave generating device according to claim 11 wherein said check valve includes a plate member of deformable material disposed over the end of said passageway.
Claim 16
Dependent Claim
35 words
An acoustic wave generating device according to claim 11 wherein said sealing means further includes at least one annular ring member disposed on the circumference of said piston engaging an inner surface of said cylinder.
Claim 17
Dependent Claim
34 words
An acoustic wave generating device according to claim 10 wherein said sealing means includes at least one annular deformable lip disposed on the circumference of said piston engaging an inner surface of said cylinder.
Claim 18
Dependent Claim
46 words
An acoustic wave generating device according to claim 10 wherein said means for displacing said piston in said cylinder includes a second cylinder concentrically disposed in the first mentioned cylinder and a second piston disposed in said second cylinder operatively connected to the first mentioned piston.
Claim 19
Dependent Claim
46 words
An acoustic wave generating device according to claim 10 wherein said means for displacing said piston in said cylinder includes a second cylinder diametrically disposed from the first mentioned cylinder and a second piston disposed in said second cylinder operatively connected to the first mentioned piston.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |