US4664635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Simulation device
Assignee: DIVETRONIC AG RENNHOFSTR
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Filing: 1985-09-12
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Granted: 1987-05-12
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Expires: 2005-09-12
Abstract
Abstract A test device for electronic pressure gauges used by underwater divers is described. The device, comprised of a pressure transmitter which is capable of being connected to the electronic pressure gauge's sensor, is used to simulate the pressure encountered during underwater diving outside of the underwater environment.
Inventors
- 👤 Jurgen Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:23
CPC Classifications
G; G09; G09B; G09B9/00; B; B63; B63C; B63C11/00; B63C11/02; B63C11/32
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
137 words
Simulation device for an electronic indicating device (43), said indicating device comprising a memory and a pressure sensor (35) for sensing the parameters of a diving maneuver and disposed inside a fluid-tight housing (41), characterized by the fact that the simulation device includes a pressure transmitter (1) having a pressure chamber (13), and a pressure line for connecting said chamber (13) with respect to said housing (41), in fluid-tight relation with said housing (41), and in fluid communication with said pressure sensor (35), said pressure transmitter (1) selectively varying the pressure of a pressure medium contained within said pressure chamber (13) and said housing (41) to simulate, at said pressure sensor, the parameters of said diving maneuver, such that the pressure chamber (13) of the pressure transmitter (1) is in fluid communication with the pressure sensor (35).
Claim 2
Dependent Claim
137 words
Simulation device for an electronic indicating device (43), said indicating device comprising a memory and a pressure sensor (35) for sensing the parameters of a diving maneuver and disposed inside a fluid-tight housing (41), characterized by the fact that the simulation device includes a pressure transmitter (1) having a pressure chamber (13), and a pressure line for connecting said chamber (13) with respect to said housing (41), in fluid-tight relation with said housing (41), and in fluid communication with said pressure sensor (35), said pressure transmitter (1) selectively varying the pressure of a pressure medium contained within said pressure chamber (13) and said housing (41) to simulate, at said pressure sensor, the parameters of said diving maneuver, such that the pressure chamber (13) of the pressure transmitter (1) is in fluid communication with the pressure sensor (35).
Claim 3
Dependent Claim
45 words
Simulation device according to claim 1, characterized in that the pressure transmitter (1) consists of a piston housing (3) with a piston (5) held internally in displaceable fashion, and includes an outlet opening (17) for the pressure medium for pressure stressing the pressure sensor (35).
Claim 4
Dependent Claim
32 words
Simulation device according to claim 2, characterized by the fact that the outlet (17) is disposed on the front side lying opposite to the piston head (7) inside the piston housing (3).
Claim 5
Dependent Claim
32 words
Simulation device according to claim 2, characterized by the fact that the outlet (17) is constructed as an outlet stub (19) projecting out over the front end of the piston housing (3).
Claim 6
Dependent Claim
23 words
Simulation device according to claim 4, characterized by the fact that the outlet stub (19) is provided with an external screw threading (21).
Claim 7
Dependent Claim
39 words
Simulation device according to claim 2, characterized by the fact that the outlet (17) and/or the outlet stub (19) is surrounded in the area of the associated front end of the piston housing (3) by a sealing ring (23).
Claim 8
Dependent Claim
28 words
Simulation device according to claim 3, characterized by the fact that the piston head (7) is provided with a sealing ring (11) running about in the circumferential direction.
Claim 9
Dependent Claim
54 words
Simulation device according to claim 2, characterized by the fact that the piston rod (9) projecting out over the piston housing (3) is provided with an external threading (25), that said piston housing (3) is provided in an internal threading (27) for the purpose of longitudinal displacement of the piston (5) by rotation thereof.
Claim 10
Dependent Claim
32 words
Simulation device according to claim 2, characterized by the fact that there is provided a handwheel (29) on the end of the piston rod (5) projecting outwardly of the piston housing (3).
Claim 11
Dependent Claim
54 words
Simulation device according to claim 9, characterized by the fact that there is installed, perpendicularly to the axial direction of the piston rod (5) a safety screw (31) as an end position stop for the piston head (7), separated from the pressure chamber (13) by the piston head (7) and projecting behind this latter.
Claim 12
Dependent Claim
35 words
Simulation device according to claim 10, characterized by the fact that the piston (5), with said safety screw (31) retracted, is completely removable from the piston housing (3) in the direction of said handwheel (29).
Claim 13
Dependent Claim
34 words
Simulation device according to claim 1, characterized by the fact that the pressure chamber (13) is provided with a pressure valve (37) leading to the outside and capable of being actuated from the outside.
Claim 14
Dependent Claim
22 words
Simulation device according to claim 2, characterized by the fact that the piston housing (3) and/or the piston (5) consist of plastic.
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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) | 1990-05-11 | 1990-11-10 | 1991-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-11 | 1994-11-10 | 1995-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-11 | 1998-11-10 | 1999-05-12 | $7700.00 | Window Closed / Lapsed |