Patent US3685539A successfully refreshed from Google Patents.
US3685539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Station combination vacuum-pressure system
Assignee: Individual
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Filing: 1970-11-01
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Granted: 1972-08-22
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Expires: 1990-11-01
Abstract
Abstract A vacuum-pressure system utilizing a single pump serving a plurality of stations for use selectively of either the vacuum or the pressure derived therefrom, each station having separate controls, by manual, electrical or mechanical means, providing either the vacuum or pressure, selectively, at any station without influencing any of the other remote stations.
Inventors
- 👤 William H Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:30
CPC Classifications
B; B65; B65G; B65G53/00; B65G53/34; B65G53/66; B65B; B65B23/00; B65B23/02; B65B23/06; B65B23/08; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85978; Y10T137/86107
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
103 words
A multiple use vacuum and pressure system comprising a pump, a conduit leading therefrom, an exhaust in the conduit, a pipe connected to said conduit at one end, a pair of spaced valves in the pipe, a station for use of either pressure or vacuum connected with respect to said pipe and located between the valves, and a second conduit connected to the intake for the pump and connected to the pipe at the opposite end thereof, said pump, pipe, and the two conduits forming a closed continuous system, and the pump providing pressure for one conduit, and vacuum for the other conduit.
Claim 2
Dependent Claim
103 words
A multiple use vacuum and pressure system comprising a pump, a conduit leading therefrom, an exhaust in the conduit, a pipe connected to said conduit at one end, a pair of spaced valves in the pipe, a station for use of either pressure or vacuum connected with respect to said pipe and located between the valves, and a second conduit connected to the intake for the pump and connected to the pipe at the opposite end thereof, said pump, pipe, and the two conduits forming a closed continuous system, and the pump providing pressure for one conduit, and vacuum for the other conduit.
Claim 3
Dependent Claim
23 words
The multiple use vacuum and pressure system of claim 1 including an extra intake valve to open the pump intake to atmospheric pressure.
Claim 4
Dependent Claim
18 words
The multiple use vacuum and pressure system of claim 1 including solenoid controls to operate the valves separately.
Claim 5
Dependent Claim
44 words
The multiple use vacuum and pressure system of claim 1 including a second pipe connected between the conduits, spaced valves in the second pipe, and second station for use of either pressure or vacuum connected to the second pipe between the two valves therein.
Claim 6
Dependent Claim
41 words
The multiple use vacuum and pressure system of claim 1 including a series of pipes connected between the conduits, a station for use in each pipe of the series, and a valve at each side of each station in each pipe.
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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |