Screen for intake of emergency sump pump

• US 3,972,647 A
• Filed: 09/09/1974
• Issued: 08/03/1976
• Est. Priority Date: 04/12/1974
• Status: Expired due to Term

• Current Assignee: Karl O. Niedermeyer
• Original Assignee: Karl O. Niedermeyer
• Inventors: Niedermeyer, Karl O.
• Primary Examiner(s): Freeh, William L.
• Assistant Examiner(s): LaPointe, G. P.
• Application Number:
  US05/504,426
• Time in Patent Office: 694 Days
• Field of Search: 417/36, 417/37, 417/38, 417/40, 417/2, 415/121 G
• US Class Current: 417/2
• CPC Class Codes: F04B 49/025 by means of floats
• CPC Class Codes: F04B 49/10 Other safety measures
• CPC Class Codes: F04D 15/029 for pumps operating in parallel
• CPC Class Codes: F04D 29/708 specially for liquid pumps

Abstract

An emergency sump pump is employed in a sump from which the liquid is normally removed by a main pump. The main pump turns on when the liquid rises to an upper level and turns off when the liquid drops to a lower level. The emergency pump has a vertical intake conduit which opens at the bottom below the lower level. This conduit is surrounded by a tube which has openings in areas below the lower level and above the upper level. The tube is solid between those two levels and also is solid above the upper area of openings.

Claims

1. In a pump apparatus including a pump having a body, and power means for driving the pump, said pump having an intake opening and used to remove liquid from a sump, bilge, or the like wherein liquid accumulates with the liquid normally being between predetermined limits of height, and a screen device enclosing said intake opening for restricting access of floating debris to said opening, the improvement comprising:

said screen device comprising a tube having upper and lower ends, the upper end being affixed to said body with the tube extending downwardly therefrom, said tube having four portions in vertical arrangement, the uppermost of the portions being solid, the next lower portion having openings therein, the then next lower portion being solid, and the lowermost of the four portions having openings therein,

said pump having an intake conduit extending from said body down through said tube, said conduit defining said intake opening adjacent the lower end of the tube,

said body forming a closure for the upper end of the tube.

2. In a pump apparatus as set forth in claim 1, including removable cover means for the lower end of the tube.

3. In a pump apparatus including an emergency pump having a body, power means for driving said emergency pump and means for mounting said emergency pump, said pump having an intake opening and being used to remove liquid from a sump, bilge, or the like wherein liquid accumulates with the liquid normally being between predetermined limits of height, and a screen device enclosing said intake opening for restricting access of floating debris to said opening, and employed as an emergency apparatus to back up a primary sump pump which normally operates to maintain the liquid between said limits of height, the improvement wherein

said device comprises a tube having upper and lower ends, and two portions between said ends, the uppermost of the two portions being solid and extending throughout said vertical height, the lowermost of said two portions having openings therein, said tube having a third portion above said uppermost of said two portions, the third portion having openings therein,

said emergency pump having an intake conduit extending from said body down through said tube, said conduit defining said intake opening adjacent the lower end of the tube.

4. In a pump apparatus as set forth in claim 3,

wherein said tube has a fourth portion above said third portion, the fourth portion being solid,

wherein said body forms a closure for the upper end of the tube, and

including cover means for the lower end of the tube.

5. In a pump apparatus as set forth in claim 4, wherein said cover means for the lower end of the tube is removable.

6. In a pump apparatus as set forth in claim 4, wherein said tube and cover means are formed of plastic.

7. In a pump apparatus as set forth in claim 3, wherein said tube and conduit extend approximately to the bottom of said sump, and said pump and power means are positioned above said limits of height.

8. In a pump apparatus as set forth in claim 3, including means secured to the unit for supporting said unit in said sump, said means permitting adjustment of the height of the unit in the sump.