US3757581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Displacement meter for measuring fluids
Assignee: Bennett Pump Inc
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Filing: 1971-10-28
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Granted: 1973-09-11
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Expires: 1991-10-28
Abstract
Abstract The disclosure relates to an improved meter for measuring fluids such as gasoline including a plurality of pistons connected to a crankshaft by means of flexible rods, with the common crankshaft being journalled in axial relation to a series of cylinders. An adjustable eccentric mechanism is arranged on the crankshaft to enable an accurate adjustment of the stroke of the pistons, and a consequent adjustment of the displacement of the pistons to achieve a meter of high precision.
Inventors
- 👤 P Mankin
- 👤 T Mitchell
- 👤 P Zanoni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:15
CPC Classifications
G; G01; G01F; G01F3/00; G01F3/02; G01F3/04; G01F3/14; G01F3/16; G01F3/18
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
205 words
A fluid displacement meter comprising: a. a casing including a central fluid inlet chamber, a plurality of measuring cylinders placed around said inlet chamber and open at one end thereto, the opposite end of each measuring cylinder being closed, and a discharge chamber having a port opening into each of said cylinders, said cylinders each including a duct connecting one end thereof with the opposite end of the next adjacent cylinder; b. a valving piston arranged one in each of said cylinders and co-operating with said port and duct to open and close the same, each piston being separably operable and including a connecting rod connecting one to each of sAid other pistons, each of said connecting rods being made of a flexible material to compensate for misalignment of the piston and cylinder during operation of the meter; c. a crankshaft rotatably supported in said casing on a movable axis and having an eccentrically mounted crank pin operating in said inlet chamber and connected to the ends of said flexible connecting rods; and d. means for adjusting the position of said crankshaft for effecting adjustment of the reciprocal movement of said pistons in said cylinders so as to regulate the volumetric discharge from the cylinders.
Claim 2
Dependent Claim
205 words
A fluid displacement meter comprising: a. a casing including a central fluid inlet chamber, a plurality of measuring cylinders placed around said inlet chamber and open at one end thereto, the opposite end of each measuring cylinder being closed, and a discharge chamber having a port opening into each of said cylinders, said cylinders each including a duct connecting one end thereof with the opposite end of the next adjacent cylinder; b. a valving piston arranged one in each of said cylinders and co-operating with said port and duct to open and close the same, each piston being separably operable and including a connecting rod connecting one to each of sAid other pistons, each of said connecting rods being made of a flexible material to compensate for misalignment of the piston and cylinder during operation of the meter; c. a crankshaft rotatably supported in said casing on a movable axis and having an eccentrically mounted crank pin operating in said inlet chamber and connected to the ends of said flexible connecting rods; and d. means for adjusting the position of said crankshaft for effecting adjustment of the reciprocal movement of said pistons in said cylinders so as to regulate the volumetric discharge from the cylinders.
Claim 3
Dependent Claim
44 words
A fluid displacement meter as in claim 1 further including coupling means mounted externally of said casing and operatively associated with said crankshaft, said coupling means being connected to a device for indicating the volume flow of the fluid through the fluid displacement meter.
Claim 4
Dependent Claim
60 words
A fluid displacement meter as in claim 1 wherein said means for adjusting the position of said crankshaft includes an eccentric within which said crankshaft is rotabably supported, ball bearings rotatably supporting said eccentric to said casing, and means disposed externally of said casing for rotating the eccentric relative to the crankshaft in order to effect displacement of said shaft.
Claim 5
Dependent Claim
26 words
A fluid displacement meter as in claim 1 wherein said flexible connecting rods are made of a plastic material which is not affected by volatile fluids.
Claim 6
Dependent Claim
28 words
A fluid displacement meter as in claim 1 wherein each of said pistons includes an annular circmferential groove to allow passage of fluid between said ports and ducts.
Claim 7
Dependent Claim
41 words
A fluid displacement meter as in claim 1 wherein the discharge chamber is defined by an annular recess formed in the upper portion of the casing, and a cover plate secured to said casing, said cover plate including an outlet opening.
Claim 8
Dependent Claim
17 words
A fluid displacement meter as in claim 3 wherein the ball bearings supporting the eccentric are pre-loaded.
Claim 9
Dependent Claim
67 words
A fluid displacement meter having a plurality of measuring cylinders provided with pistons having connecting rods adapted to operate a totalizing device external of the meter, each of said connecting rods being made of a flexible plastic material, means for connecting each rod at one end thereof to said piston, while the opposite end of said rod is connected to the drive mechanism of said totalizing device.
Claim 10
Dependent Claim
67 words
A fluid displacement meter having a plurality of measuring cylinders provided with pistons having connecting rods adapted to operate a totalizing device external of the meter, each of said connecting rods being made of a flexible plastic material, means for connecting each rod at one end thereof to said piston, while the opposite end of said rod is connected to the drive mechanism of said totalizing device.
Claim 11
Dependent Claim
27 words
A fluid displacement meter as in claim 8 wherein said flexible connecting rods are made of a plastic material which is not adversely affected by volatile fluids.
Claim 12
Dependent Claim
37 words
A fluid displacement meter as in claim 9 wherein each connecting rod includes a brass bushing that is disposed intermediate the connecting rod and a carbon bushing rotatively mounted on the drive mechanism of said totalizing device.
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |