Patent US3784335A successfully refreshed from Google Patents.
US3784335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proportioning pump
Assignee: IRC CORP
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Filing: 1971-12-13
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Granted: 1974-01-08
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Expires: 1991-12-13
Abstract
Abstract A proportional displacement mechanism is disclosed for imparting proportional strokes to the piston rods of a plurality of pump units. A stroke of a first length is imparted to the piston rod of at least one pump unit by reciprocable drive means connected directly to the piston rod, and a stroke of a proportional length is imparted to the piston rod of another pump unit through linkage means interconnected between the drive means and the latter piston rod. The piston rods of the pump units are reciprocable relative to fixed support means, and the linkage means is in the form of a parallelogram of link elements pivotally connected at one point to the drive means and at another point to the support means. The piston rod of the second pump unit carries a cam track component which extends transverse to the axis of the piston rod, and an adjacent pair of the link elements carry cam elements which cooperatively engage the cam track means. In response to reciprocating motion of the drive means, the link elements of the parallelogram linkage means are displaced in a manner whereby the cam elements displace the cam track means and accordingly the piston rod of the second pump unit in the direction of movement of the drive means and a distance proportional to the movement of the drive means.
Inventors
- 👤 J Cevera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:39
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/12; F04B13/00; F04B13/02; F04B9/00; F04B9/02; F04B1/00; F04B1/04; F04B1/06
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
285 words
A proportional displacement mechanism comprising, support plate means, first driven output means reciprocable relative to said support plate means, drive means for displacing said first output means a first distance relative to said support plate means, second driven output means reciprocable relative to said support plate means, and linkage and cam means interconnecting said drive means and said second output means for said second output means to be displaced a second distance relative to said support plate means when said drive means displaces said first output means said first distance, said second distance being proportional to said first distance, said drive means including shaft means reciprocable relative to said support plate means, said first driven output means being connected to said shaft means for movement therewith, said linkage and cam means including first link elements each having one end thereof pivotally interconnected with one of said drive means and support plate means and the other end thereof interengaged with means to constrain said first link elements to pivot relative to said one of said drive means and support plate means in response to movement of said shaft means relative to said support plate means, said linkage and cam means further including cam means interconnecting said first link elements and said second output means and operable in response to pivotal movement of said first link elements to impart reciprocating movement to said second output means, said cam means including cam track means connected to said second output means and cam elements carried by said first link elements and interengaged with said cam track means to reciprocate said cam track means and thus said second output means in response to pivotal movement of said first link means.
Claim 2
Dependent Claim
285 words
A proportional displacement mechanism comprising, support plate means, first driven output means reciprocable relative to said support plate means, drive means for displacing said first output means a first distance relative to said support plate means, second driven output means reciprocable relative to said support plate means, and linkage and cam means interconnecting said drive means and said second output means for said second output means to be displaced a second distance relative to said support plate means when said drive means displaces said first output means said first distance, said second distance being proportional to said first distance, said drive means including shaft means reciprocable relative to said support plate means, said first driven output means being connected to said shaft means for movement therewith, said linkage and cam means including first link elements each having one end thereof pivotally interconnected with one of said drive means and support plate means and the other end thereof interengaged with means to constrain said first link elements to pivot relative to said one of said drive means and support plate means in response to movement of said shaft means relative to said support plate means, said linkage and cam means further including cam means interconnecting said first link elements and said second output means and operable in response to pivotal movement of said first link elements to impart reciprocating movement to said second output means, said cam means including cam track means connected to said second output means and cam elements carried by said first link elements and interengaged with said cam track means to reciprocate said cam track means and thus said second output means in response to pivotal movement of said first link means.
Claim 3
Dependent Claim
41 words
The mechanism of claim 1, wherein said cam elements are selectively positionable along said first link elements between said ends thereof to vary the length of said second distance and thus the proportional displacements of said first and second output means.
Claim 4
Dependent Claim
54 words
The mechanism of claim 1, wherein said means to constrain said first link elements includes second link elements each having one end thereof pivotally interconnected with the other of said drive means and support plate means and the other end thereof pivotally interengaged with said other end of one of said first link elements.
Claim 5
Dependent Claim
41 words
The mechanism of claim 3, wherein said cam elements are selectively positionable along said first link elements between said ends thereof to vary the length of said second distance and thus the proportional displacement of said first and second output means.
Claim 6
Dependent Claim
38 words
The mechanism of claim 4, wherein said one ends of said first link elements are pivotally interconnected with said drive means and said one ends of said second link means are pivotally interconnected with said support plate means.
Claim 7
Dependent Claim
373 words
A proportional displacement mechanism for use with a plurality of pump means each having cylinder and piston means including cylinder means and piston means reciprocable in said cylinder means through a stroke definitive of pump displacement, said mechanism comprising, support means for said cylinder means, at least one first driven output means reciprocable relative to said support means and interconnected with a first piston means in one of said cylinder means, drive means for displacing said first output means whereby said first piston means is displaced a first distance relative to said one cylinder means, second driven output means reciprocable relative to said support means and interconnected with a second piston means in another of said cylinder means, and linkage means interconnecting said drive means and said second output means for displacing said second output means whereby said second piston means is displaced a second distance relative to said another of said cylinder means when said drive means displaces said first output means said first distance, said second distance being proportional to said first distance, said drive means including shaft means reciprocable relative to said support means, and said first output means including first piston rod means having opposite ends interconnected one with said shaft means and the other with said first piston means, whereby said first distance corresponds to the displacement of said shaft means relative to said support means, said second output means including second piston rod means having opposite ends one of which is interconnected with said second piston means, and said linkage means including first link elements each having one end thereof pivotally interconnected with one of said drive means and support means and the other end thereof interengaged with means to constrain said first link elements to pivot relative to said one of said drive means and support means in response to movement of said shaft means relative to said support means, said linkage means further including cam means interconnecting said first link elements and the other of said opposite ends of said second piston rod means and operable in response to pivotal movement of said first link elements to impart reciprocating movement to said second piston rod means to displace said second piston means said second distance.
Claim 8
Dependent Claim
373 words
A proportional displacement mechanism for use with a plurality of pump means each having cylinder and piston means including cylinder means and piston means reciprocable in said cylinder means through a stroke definitive of pump displacement, said mechanism comprising, support means for said cylinder means, at least one first driven output means reciprocable relative to said support means and interconnected with a first piston means in one of said cylinder means, drive means for displacing said first output means whereby said first piston means is displaced a first distance relative to said one cylinder means, second driven output means reciprocable relative to said support means and interconnected with a second piston means in another of said cylinder means, and linkage means interconnecting said drive means and said second output means for displacing said second output means whereby said second piston means is displaced a second distance relative to said another of said cylinder means when said drive means displaces said first output means said first distance, said second distance being proportional to said first distance, said drive means including shaft means reciprocable relative to said support means, and said first output means including first piston rod means having opposite ends interconnected one with said shaft means and the other with said first piston means, whereby said first distance corresponds to the displacement of said shaft means relative to said support means, said second output means including second piston rod means having opposite ends one of which is interconnected with said second piston means, and said linkage means including first link elements each having one end thereof pivotally interconnected with one of said drive means and support means and the other end thereof interengaged with means to constrain said first link elements to pivot relative to said one of said drive means and support means in response to movement of said shaft means relative to said support means, said linkage means further including cam means interconnecting said first link elements and the other of said opposite ends of said second piston rod means and operable in response to pivotal movement of said first link elements to impart reciprocating movement to said second piston rod means to displace said second piston means said second distance.
Claim 9
Dependent Claim
62 words
The mechanism of claim 6, wherein said cam means includes cam track means interconnected with said other end of said second piston rod means and cam elements carried by said first link elements and engaging said cam track means to reciprocate said cam track means and thus said second pisTon rod means in response to pivotal movement of said first link elements.
Claim 10
Dependent Claim
41 words
The mechanism of claim 7, wherein said cam elements are selectively positionable along said first link elements between said ends thereof to vary the length of said second distance and thus the proportional displacements of said first and second piston means.
Claim 11
Dependent Claim
53 words
The mechanism of claim 7, wherein said means to constrain said first link elements includes second link elements each having one end thereof pivotally interconnected with the other of said drive means and support means and the other end thereof pivotally interconnected with said other end of one of said first link elements.
Claim 12
Dependent Claim
41 words
The mechanism of claim 9, wherein said cam elements are selectively positionable along said first link elements between said ends thereof to vary the length of said second distance and thus the proportional displacements of said first and second piston means.
Claim 13
Dependent Claim
37 words
The mechanism of claim 10, wherein said one ends of said first link elements are pivotally interconnected with said shaft means and said one ends of said second link elements are pivotally interconnected with said support means.
Claim 14
Dependent Claim
54 words
The mechanism of claim 11, wherein two first driven output means are included, said first and second output means being aligned side by side with said second output means between said two first output means, and said piston rod means of said first and second output means being disposed substantially parallel to one another.
Claim 15
Dependent Claim
65 words
The mechanism of claim 12, wherein said first link elements include parallel paris of first link elements on opposite sides of said aligned first and second output means, said second link elements include parallel pairs of second link elements on opposite sides of said alinged first and second output means, and said cam track means is disposed between said parallel pairs of first link elements.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |