US3801013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid injection device
Assignee: Individual
•
Filing: 1973-04-09
•
Granted: 1974-04-02
•
Expires: 1993-04-09
Abstract
Abstract The present invention has as its object an improvement in fluid injection device and more particularly in double injection devices arranged for injecting into a mixing chamber two fluid chemical components which enter into reaction in the said chamber. Said device comprises two needle injectors placed opposite to inject the said fluid into a common mixing chamber and controlled by volumetric pumps driven by a common motor, and a connection mechanism connected to the said needles so that the opening of a first injector obtained by displacement of its needle when the second injector is closed produces the rapid opening of the second injector by correlative displacement of its needle.
Inventors
- 👤 A Renaud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:01
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/74; B29B7/76; B29B7/7631; G; G05; G05D; G05D11/00; G05D11/006; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2516
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
72 words
Fluid injection device comprising two needle injectors placed opposite to inject the said fluid into a common mixing chamber and controlled by volumetric pumps driven by a common motor, and a connection mechanism connected to the said needles so that the opening of a first injector obtained by displacement of its needle when the second injector is closed produces the rapid opening of the second injector by correlative displacement of its needle.
Claim 2
Dependent Claim
72 words
Fluid injection device comprising two needle injectors placed opposite to inject the said fluid into a common mixing chamber and controlled by volumetric pumps driven by a common motor, and a connection mechanism connected to the said needles so that the opening of a first injector obtained by displacement of its needle when the second injector is closed produces the rapid opening of the second injector by correlative displacement of its needle.
Claim 3
Dependent Claim
25 words
Injection device according to claim 1 wherein the said connection mechanism comprises an articulated parallelogram supported on the heads of the needles of the injectors.
Claim 4
Dependent Claim
139 words
Injection device according to claim 1 wherein the said connection mechanism comprises a first piece supported on the head of the needle of the first injector and capable of turning about a first blade, a rod perpendicular to the first piece and articulated by its first end on this first piece, a second piece parallel to the first piece articulated on the second end of the said rod and capable of turning around a second blade and a third reversal of direction of displacement piece connected to the said second piece capable of turning Around a third blade and supported on the head of the needle of the second injector so that the displacement of the needle of one of the injectors in one direction controls the displacement of the needle of the other injector in the other direction.
Claim 5
Dependent Claim
29 words
Injection device according to claim 3 wherein the said second and third pieces are connected to one another by a ball located in corresponding recesses of the said pieces.
Claim 6
Dependent Claim
32 words
Injection device according to claim 1 wherein a fixed compression spring pushes the first piece so as to close the two injectors when the said pumps are not actuated by the motor.
Claim 7
Dependent Claim
51 words
Injection device according to claim 1 comprising a mechanical device for limitation of the opening of the injectors adjustable for each injector so as to vary the losses of charge in the passage of the injectors by the corresponding fluids and consequently their temperature at the admission into the mixing chamber.
Claim 8
Dependent Claim
36 words
Injection device according to claim 6 in which this limitation device for the opening of the injectors comprises two adjustable screws connected to the first and to the third pieces and associated with two fixed stops.
Claim 9
Dependent Claim
142 words
Fluid injection device comprising two needle injectors placed opposite one another so as to inject the said fluids into a common mixing chamber and controlled by volumetric pumps driven by a common motor comprising a connection mechanism connected to the said needles which comprises a first piece of U shape inside the branches of which there is located a fourth piece capable of turning around the said first piece and supported on a first fixed blade and on the head of the needle of the first injector by means of a screw, the said first piece being connected to a flexible metal ribbon itself connected to a second piece capable of turning about a second blade connected to a third reversal of direction of displacement piece capable of turning about a third blade and supported on the head of the second injector.
Claim 10
Dependent Claim
142 words
Fluid injection device comprising two needle injectors placed opposite one another so as to inject the said fluids into a common mixing chamber and controlled by volumetric pumps driven by a common motor comprising a connection mechanism connected to the said needles which comprises a first piece of U shape inside the branches of which there is located a fourth piece capable of turning around the said first piece and supported on a first fixed blade and on the head of the needle of the first injector by means of a screw, the said first piece being connected to a flexible metal ribbon itself connected to a second piece capable of turning about a second blade connected to a third reversal of direction of displacement piece capable of turning about a third blade and supported on the head of the second injector.
Claim 11
Dependent Claim
71 words
Device according to claim 8 wherein a fixed compression spring pushes the first piece so as to close the two injectors when the said pumps are not actuated by the motor, the thrust force of the spring being equally distributed between the axis of rotation of the fourth piece and the axis of transmission of thrust on the second injector which coincides with the plane of the said flexible metal ribbon.
Claim 12
Dependent Claim
62 words
Device according to claim 8, wherein an abutment screw which passes into a threaded hole of a part of the first piece permits of making the first and the fourth piece integral by tightening the said screw for a relative position of these pieces for which the thrust of the said spring is equally distributed on the two needles of the injectors.
References Cited (Backward Citations)
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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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |