← Back to Patent Explorer
US3744738A Expired / Lapsed US ⏱️ 0.0 years remaining

Zero gravity liquid transfer screen

Assignee: National Aeronautics and Space Administration
•
Filing: 1971-09-16
•
Granted: 1973-07-10
•
Expires: 1991-09-16
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A liquid transfer device for use in a zero gravity environment, such as outer space, for transferring liquid from one container to another. The device includes a spiral shaped screen type member which is carried in the container for collecting the randomly dispersed liquid in the container and transferring such to an exit port.

Inventors

  • 👤 F Howard

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 15:38
CPC Classifications
B; B64; B64G; B64G1/00; B64G1/22; B64G1/40; B64G1/402; F; F17; F17C; F17C13/00; F17C13/008; F17C9/00

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 159 words
In combination with a liquid container in a zero gravity environment such as outer space, a device for transferring liquid from said container through an exit port provided therein, comprising: A. a spiral shaped member rotatably mounted in said container along a longitudinal axis in alignment with said exit port; B. said spiral shaped member being constructed of a material having small perforations therein normally capable of imparting a motion to said liquid by surface tension and frictional forces created therebetween when said material contacts said liquid; C. means for rotating said spiral shaped member to impart said motion of said liquid to direct said liquid out through said exit port; D. said material being constructed so as to permit the passage of said liquid through said small perforations if the pressure buildup created by said spiral shaped member engaging said liquid becomes greater than said surface tension and frictional forces, thereby minimizing undesirable back pressures in said container.
Claim 2
Dependent Claim 159 words
In combination with a liquid container in a zero gravity environment such as outer space, a device for transferring liquid from said container through an exit port provided therein, comprising: A. a spiral shaped member rotatably mounted in said container along a longitudinal axis in alignment with said exit port; B. said spiral shaped member being constructed of a material having small perforations therein normally capable of imparting a motion to said liquid by surface tension and frictional forces created therebetween when said material contacts said liquid; C. means for rotating said spiral shaped member to impart said motion of said liquid to direct said liquid out through said exit port; D. said material being constructed so as to permit the passage of said liquid through said small perforations if the pressure buildup created by said spiral shaped member engaging said liquid becomes greater than said surface tension and frictional forces, thereby minimizing undesirable back pressures in said container.
Claim 3
Dependent Claim 22 words
The device as set forth in claim 1 wherein: A. said material consists of a woven metallic wire defining a perforated screen.

References Cited (Backward Citations)

US2617273A Cited
US3093271A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-07-09 1977-01-08 1977-07-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-07-09 1981-01-08 1981-07-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-07-09 1985-01-08 1985-07-10 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag