US4080874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive for a pair of metering pumps
Assignee: Individual
•
Filing: 1976-12-10
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Granted: 1978-03-28
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Expires: 1996-12-10
Abstract
Abstract A pair of metering pumps are fixedly supported on a mounting frame and are driven in tandem by a reciprocable thrust mechanism for driving the piston or cylinder element of the pump. The thrust mechanism is movable transversely to the reciprocating direction and is supported on a frame. Two levers have respective ends linked to the thrust mechanism and to the frame, respectively. One of the reciprocable pump elements is suspended on a respective lever whereby reciprocation of the thrust mechanism causes corresponding reciprocation of the suspended pump element. The levers are held stationary with respect to the thrust mechanism and the suspension of the reciprocable pump elements holds them stationary with respect to the mounting frame.
Inventors
- 👤 Wilfried W. Burkhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:29
CPC Classifications
G; G05; G05D; G05D11/00; G05D11/02; G05D11/13; G05D11/131; G05D11/132; F; F04; F04B; F04B13/00; F04B13/02; F04B49/00; F04B49/12; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18992; Y10T74/20; Y10T74/20012
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
174 words
A drive for a pair of pumps for metering liquid to paste-like materials, each of the pumps comprising a piston rod element and a cylinder element, one of the pump elements being reciprocable in relation to the other, and a mounting frame fixedly supporting the metering pumps in spaced relationship, the drive comprising (a) a reciprocable thrust mechanism for driving the one element of the pumps for reciprocation in a first direction, (1) the thrust mechanism being arranged for movement in relation to the mounting frame in a second direction transverse to the first direction, (b) a frame supporting the thrust mechanism, (c) two levers having respective ends linked to the thrust mechanism and to the frame, respectively, and (d) means suspending the one pump element to the pump on a respective one of the levers whereby reciprocation of the thrust mechanism causes corresponding reciprocation of the suspended pump elements, the levers being laterally stationary with respect to the thrust mechanism and the suspending means being laterally stationary with respect to the mounting frame.
Claim 2
Dependent Claim
174 words
A drive for a pair of pumps for metering liquid to paste-like materials, each of the pumps comprising a piston rod element and a cylinder element, one of the pump elements being reciprocable in relation to the other, and a mounting frame fixedly supporting the metering pumps in spaced relationship, the drive comprising (a) a reciprocable thrust mechanism for driving the one element of the pumps for reciprocation in a first direction, (1) the thrust mechanism being arranged for movement in relation to the mounting frame in a second direction transverse to the first direction, (b) a frame supporting the thrust mechanism, (c) two levers having respective ends linked to the thrust mechanism and to the frame, respectively, and (d) means suspending the one pump element to the pump on a respective one of the levers whereby reciprocation of the thrust mechanism causes corresponding reciprocation of the suspended pump elements, the levers being laterally stationary with respect to the thrust mechanism and the suspending means being laterally stationary with respect to the mounting frame.
Claim 3
Dependent Claim
18 words
The pump drive of claim 1, further comprising means for limiting the reciprocating stroke of the thrust mechanism.
Claim 4
Dependent Claim
32 words
The pump drive of claim 1, wherein the thrust mechanism comprises a piston rod having an outer end, the levers having one of their ends linked to the outer piston rod end.
Claim 5
Dependent Claim
28 words
The pump drive of claim 1, wherein the one pump element suspended on each of the levers is the piston rod of a respective one of the pumps.
Claim 6
Dependent Claim
85 words
The pump drive of claim 1, wherein the mounting frame comprises a pair of mounting plates substantially parallel to each other and two guide columns fixedly interconnecting the mounting plates, the pumps being fixedly supported on one of the mounting plates, and the suspending means comprises respective sliding elements mounted on the guide columns for reciprocating sliding movement therealong in the first direction, the sliding elements being connected to the levers and the one pump element being affixed to the sliding elements for reciprocation therewith.
Claim 7
Dependent Claim
24 words
The pump drive of claim 5, further comprising a ball-and-socket joint mounting each of the levers in a respective one of the sliding elements.
Claim 8
Dependent Claim
72 words
The pump drive of claim 1, wherein the frame comprises a mounting plate and two lateral supports affixed thereto, the thrust mechanism comprises a reciprocable push rod having an end linked to one of the ends of the levers for transmitting thrust from the reciprocable push rod to the levers, and the other ends of the levers are linked to the lateral supports of the frame and held therein against reciprocating movement.
Claim 9
Dependent Claim
32 words
The pump drive of claim 7, wherein the thrust mechanism is fixedly supported on the frame and the frame is mounted on the mounting frame for movement thereon in the second direction.
Claim 10
Dependent Claim
26 words
The pump drive of claim 1, wherein the levers are arranged in a scissors arrangement and pivot about the lever ends linked to the thrust mechanism.
References Cited (Backward Citations)
US2752989A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-27 | 1981-09-26 | 1982-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-27 | 1985-09-26 | 1986-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-27 | 1989-09-26 | 1990-03-28 | $7700.00 | Window Closed / Lapsed |