Apparatus for measuring a fluid level

• US 6,523,404 B1
• Filed: 01/14/2000
• Issued: 02/25/2003
• Est. Priority Date: 01/14/2000
• Status: Expired due to Term

• Current Assignee: OPW Fueling Components, LLC (Dover Corporation)
• Original Assignee: Delaware Capital Formation Incorporated (Dover Corporation)
• Inventors: Murphy, Michael E., Rogers, Leslie N. Jr., Scott, Sean K.
• Primary Examiner(s): LARKIN, DANIEL SEAN
• Application Number:
  US09/483,187
• Time in Patent Office: 1,138 Days
• Field of Search: 733/05, 733/07, 733/08, 733/10, 733/19, 733/20, 733/21, 733/225
• US Class Current: 73/305
• CPC Class Codes: G01F 23/42 using mechanically actuated indicating means
• CPC Class Codes: G01F 23/76 characterised by the construction of the float

Abstract

An apparatus for measuring a fluid level in a tank comprises a housing including a level indicator for displaying a measured fluid level in the tank. A rod extends from the housing and a float is adapted to travel along the rod. A first end of an elongated flexible member is attached to the float and an opposite end of the elongated flexible member is attached to a spool. The spool stores at least a portion of the elongated flexible member. The apparatus further includes a spring adapted to urge the spool to automatically uptake portions of the elongated flexible member as the float travels towards the housing and to allow the elongated flexible member to unwind from the spool as the float travels away from the housing.

Claims

1. An apparatus for measuring a fluid level, comprising:

a) a housing including a level indicator adapted to display a measured fluid level;

b) at least one rod extending from the housing;

c) a float adapted to travel along the rod;

d) an elongated flexible member having a first end and a second end, the first end being attached to the float;

e) a spool adapted to store at least a portion of the elongated flexible member, and the second end of the elongated flexible member being attached to the spool; and

f) a biasing member adapted to urge the spool to automatically uptake portions of the elongated flexible member as the float travels towards the housing and adapted to allow the elongated flexible member to unwind from the spool as the float travels away from the housing.

2. The apparatus according to claim 1, wherein the at least one rod is adjustable in length.

3. The apparatus according to claim 2, wherein the rod comprises a first rod and a second rod, and wherein the second rod is adjustable relative to the first rod.

4. The apparatus according to claim 3, wherein the second rod is in telescoping relation to the first rod.

5. The apparatus according to claim 1, wherein the float comprises a first end and a second end, wherein a through hole extends through the float from the first end to the second end, and further wherein the rod extends through the through hole.

6. The apparatus according to claim 5, wherein the through hole is provided with at least one beveled end portion.

7. The apparatus according to claim 6, wherein the beveled end portion has a conical surface.

8. The apparatus according to claim 1, wherein the float further comprises a bracket, and wherein the first end of the elongated flexible member is attached to the bracket of the float.

9. The apparatus according to claim 1, further comprising a foot attached to a distal end of the rod.

10. The apparatus according to claim 1, wherein the housing comprises an angled face adapted to display a measured fluid level in a direction downwardly and outwardly from the housing.

11. The apparatus according to claim 1, further comprising an alarm adapted to signal a predetermined fluid level in a tank.

12. The apparatus according to claim 1, wherein the at least one rod comprises at least two coaxial rods.

13. An apparatus for measuring a fluid level, comprising:

a) a housing including a level indicator adapted to display a measured fluid level;

b) at least one rod extending from the housing;

c) a swivel top attached to the housing and a swivel bottom rotatably attached to the swivel top, wherein a proximal end portion of the rod is attached to the swivel top, and whereby the housing is rotatable relative to the swivel bottom;

d) a float adapted to travel along the rod;

e) an elongated flexible member having a first end and a second end, the first end being attached to the float;

f) a spool adapted to store at least a portion of the elongated flexible member, and the second end of the elongated flexible member being attached to the spool; and

g) a biasing member adapted to urge the spool to automatically uptake portions of the elongated flexible member as the float travels towards the housing and adapted to allow the elongated flexible member to unwind from the spool as the float travels away from the housing.

14. The apparatus according to claim 13, wherein the swivel bottom comprises exterior male threads adapted to engage a tank opening.

15. The apparatus according to claim 13, wherein the swivel bottom comprises interior female threads adapted to engage a tank opening.

16. The apparatus according to claim 13, wherein the swivel top is formed with a guide hole, and the elongated flexible member extends through the guide hole.

17. The apparatus according to claim 13, wherein at least one set screw is threaded into the swivel top for engaging the swivel bottom.

18. An apparatus for measuring a fluid level, comprising:

a) a housing including a level indicator adapted to display a measured fluid level;

b) at least one rod extending from the housing;

c) a float adapted to travel along the rod;

d) an elongated flexible member having a first end and a second end, the first end being attached to the float;

e) a spool adapted to store at least a portion of the elongated flexible member, and the second end of the elongated flexible member being attached to the spool; and

f) a biasing member adapted to urge the spool to automatically uptake portions of the elongated flexible member as the float travels towards the housing and adapted to allow the elongated flexible member to unwind from the spool as the float travels away from the housing, wherein the biasing member comprises a spring and the level indicator includes a plurality of readout gears in communication with the spool, the readout gears each including indicia for displaying a measured fluid level, the readout gears being rotatably mounted on a first shaft, a spring storage spool adapted to store portions of the spring, and at least two indexing gears, the indexing gears and the storage spool being rotatably mounted on a second shaft.

19. An apparatus for measuring a fluid level, comprising:

a) a housing including a level indicator adapted to display a measured fluid level;

b) at least one rod extending from the housing;

c) a float adapted to travel along the rod;

d) an elongated flexible member having a first end and a second end, the first end being attached to the float;

e) a spool adapted to store at least a portion of the elongated flexible member, and the second end of the elongated flexible member being attached to the spool;

f) a biasing member adapted to urge the spool to automatically uptake portions of the elongated flexible member as the float travels towards the housing and adapted to allow the elongated flexible member to unwind from the spool as the float travels away from the housing; and

g) a vent apparatus.

20. The apparatus according to claim 19, wherein the vent apparatus comprises a pressure vacuum vent.

21. The apparatus according to claim 19, wherein the vent apparatus comprises a vent pipe and a pressure vacuum vent mounted on an end of the vent pipe.

22. The apparatus according to claim 19, wherein the housing includes a lid defining a vent opening and wherein the vent apparatus is mounted on the lid over the vent opening.

23. A tank assembly comprising:

a) a tank defining an interior portion and provided with an opening;

b) a fluid located in the interior portion of the tank, wherein the fluid defines a fluid level; and

c) an apparatus attached to the opening of the tank, the apparatus comprising;

i) a housing including a level indicator adapted to display a measured fluid level in the tank;

ii) an adjustable rod extending from the housing into the interior portion of the tank, the rod including a first rod and a second rod in telescoping relation to the first rod;

iii) a float adapted to travel along the adjustable rod, the float comprising a first end and a second end, wherein a through hole extends through the float from the first end to the second end, and further wherein the adjustable rod extends through the through hole;

iv) an elongated flexible member having a first end and a second end, the first end being attached to the float;

v) a spool adapted to store at least a portion of the elongated flexible member, the second end of the elongated flexible member being attached to the spool; and

vi) a biasing member adapted to urge the spool to automatically uptake portions of the elongated flexible member as the float travels towards the housing and adapted to allow the elongated flexible member to unwind from the spool as the float travels away from the housing.

24. The tank assembly according to claim 23, wherein the through hole is provided with at least one beveled end portion including a conical surface.

25. The tank assembly according to claim 23, wherein the housing comprises an angled face adapted to display a measured fluid level in a direction downwardly and outwardly from the housing.

26. The tank assembly according to claim 23, further comprising an alarm adapted to signal a predetermined fluid level in the tank.

27. A tank assembly comprising:

a) a tank defining an interior portion and provided with an opening;

b) a fluid located in the interior portion of the tank, wherein the fluid defines a fluid level; and

c) an apparatus attached to the opening of the tank, the apparatus comprising;

i) a housing including a level indicator adapted to display a measured fluid level in the tank;

ii) an adjustable rod extending from the housing into the interior portion of the tank, the rod including a first rod and a second rod in telescoping relation to the first rod;

iii) a swivel top attached to the housing and a swivel bottom rotatably attached to the swivel top, wherein a proximal end portion of the adjustable rod is attached to the swivel top, and whereby the housing is rotatable relative to the swivel bottom;

iv) a float adapted to travel along the adjustable rod, the float comprising a first end and a second end, wherein a through hole extends through the float from the first end to the second end, and further wherein the adjustable rod extends through the through hole;

v) an elongated flexible member having a first end and a second end, the first end being attached to the float;

vi) a spool adapted to store at least a portion of the elongated flexible member, the second end of the elongated flexible member being attached to the spool; and

vii) a biasing member adapted to urge the spool to automatically uptake portions of the elongated flexible member as the float travels towards the housing and adapted to allow the elongated flexible member to unwind from the spool as the float travels away from the housing.

28. The tank assembly according to claim 27, wherein the swivel bottom is attached to the tank and wherein the swivel bottom comprises threads engaging the opening of the tank.

29. The tank assembly according to claim 27, wherein the swivel top is provided with a guide hole, and the elongated flexible member extends through the guide hole.

30. A tank assembly comprising:

a) a tank defining an interior portion and provided with an opening;

b) a fluid located in the interior portion of the tank, wherein the fluid defines a fluid level; and

c) an apparatus attached to the opening of the tank, the apparatus comprising;

i) a housing including a level indicator adapted to display a measured fluid level in the tank;

ii) an adjustable rod extending from the housing into the interior portion of the tank, the rod including a first rod and a second rod in telescoping relation to the first rod;

iii) a float adapted to travel along the adjustable rod, the float comprising a first end and a second end, wherein a through hole extends through the float from the first end to the second end, and further wherein the adjustable rod extends through the through hole;

iv) an elongated flexible member having a first end and a second end, the first end being attached to the float;

v) a spool adapted to store at least a portion of the elongated flexible member, the second end of the elongated flexible member being attached to the spool; and

vi) a biasing member adapted to urge the spool to automatically uptake portions of the elongated flexible member as the float travels towards the housing and adapted to allow the elongated flexible member to unwind from the spool as the float travels away from the housing, wherein the biasing member comprises a spring and the level indicator includes a plurality of readout gears in communication with the spool, the readout gears each including indicia for displaying a measured fluid level in the tank, the readout gears being rotatably mounted on a first shaft, a spring storage spool adapted to store portions of the spring, and at least two indexing gears, the indexing gears and storage spool being rotatably mounted on a second shaft.

31. A tank assembly comprising:

a) a tank defining an interior portion and provided with an opening;

b) a fluid located in the interior portion of the tank, wherein the fluid defines a fluid level; and

c) an apparatus attached to the opening of the tank, the apparatus comprising;

i) a housing including a level indicator adapted to display a measured fluid level in the tank;

ii) an adjustable rod extending from the housing into the interior portion of the tank, the rod including a first rod and a second rod in telescoping relation to the first rod;

iii) a float adapted to travel along the adjustable rod, the float comprising a first end and a second end, wherein a through hole extends through the float from the first end to the second end, and further wherein the adjustable rod extends through the through hole;

iv) an elongated flexible member having a first end and a second end, the first end being attached to the float;

v) a spool adapted to store at least a portion of the elongated flexible member, the second end of the elongated flexible member being attached to the spool;

vi) a biasing member adapted to urge the spool to automatically uptake portions of the elongated flexible member as the float travels towards the housing and adapted to allow the elongated flexible member to unwind from the spool as the float travels away from the housing; and

vii) a vent apparatus.

32. The tank assembly according to claim 31, wherein the vent apparatus comprises a pressure vacuum vent.

33. The tank assembly according to claim 31, wherein the vent apparatus comprises a vent pipe and a pressure vacuum vent mounted on an end of the vent pipe.

34. The apparatus according to claim 31, wherein the housing includes a lid defining a vent opening and wherein the vent apparatus is mounted on the lid over the vent opening.