US4534408A — Induction device fitted inside a tank for drawing…

Claim 1

Independent Claim 199 words

Fluid induction device for use with liquid fuel, fitted inside a tank for drawing in liquid fuels in particular, wherein said device comprises an enclosure (10) provided at its base with first communicating means and at its upper part with second means of communicating with the tank, said enclosure (10) containing, on the one head, an induction pipe (13) of a pump and on the other hand, a conduit (15) adapted to receive heated fluid ensuring the heating of the enclosure, characterized in that the enclosure (10) is resting on a dish member (11) at the bottom of the tank, in that the first communicating means is formed by vertical directional slots (12) situated at the base of said enclosure, in that the second means of communicating with the tank extends downwardly into the interior of said enclosure, said second means including a floating member (20) shiftable between sealing and unsealing positions of said second means in the filled and unfilled conditions respectively of said enclosure, and in that the induction pipe (13) comprises an end portion (13a) which is bent towards the top part of the enclosure and comprises a series of orifices 14 distributed throughout its length.

Claim 2

Dependent Claim 199 words

Fluid induction device for use with liquid fuel, fitted inside a tank for drawing in liquid fuels in particular, wherein said device comprises an enclosure (10) provided at its base with first communicating means and at its upper part with second means of communicating with the tank, said enclosure (10) containing, on the one head, an induction pipe (13) of a pump and on the other hand, a conduit (15) adapted to receive heated fluid ensuring the heating of the enclosure, characterized in that the enclosure (10) is resting on a dish member (11) at the bottom of the tank, in that the first communicating means is formed by vertical directional slots (12) situated at the base of said enclosure, in that the second means of communicating with the tank extends downwardly into the interior of said enclosure, said second means including a floating member (20) shiftable between sealing and unsealing positions of said second means in the filled and unfilled conditions respectively of said enclosure, and in that the induction pipe (13) comprises an end portion (13a) which is bent towards the top part of the enclosure and comprises a series of orifices 14 distributed throughout its length.

Claim 3

Dependent Claim 19 words

Device as claimed in claim 1, wherein the wall of the enclosure (10) is constituted by a heat-insulating material.

Claim 4

Dependent Claim 38 words

Device as claimed in claim 1, wherein said enclosure (10) is in the shape of a bell closed at its lower part and resting on said dish member, said dish member defining the low point of said tank.

Claim 5

Dependent Claim 64 words

Device as claimed in claim 1, wherein said conduit (15) comprises a continuous coil extending at least partly from the upper part to the lower part of said enclosure (15) and mounted on the inner wall of enclosure (10), said coil being provided at its base with a series of calibrated directional holes (15a) positioned to create a gyratory flow inside said enclosure (10).

Claim 6

Dependent Claim 72 words

Device as claimed in claim 1, wherein said second means is constituted by a hollow body (17) provided at its base with slots (18,19) issuing into the enclosure (10) as well as with an opening (22) at its upper part which opening issues into the tank (8) the combination including a float (20) situated in the hollow body (17) and positioned to block said opening in the full condition of said enclosure.

Claim 7

Dependent Claim 27 words

Device as claimed in claim 5, wherein said slots 19 in said hollow body are, orientted tangentially to thereby create a revolving flow inside the enclosure (10).

Claim 8

Dependent Claim 25 words

Device as claimed in claim 1, wherein said vertical directional slots (12) are oriented tangentially and are inclined upwardly from said tank into said enclosure.

Claim 9

Dependent Claim 20 words

Device as claimed in claim 1, wherein the inner surface of said enclosure (10) is provided with heat exchange means.

Claim 10

Dependent Claim 49 words

Device as claimed in claim 1, and including a heat regulator means (23) in said conduit (15) for selectively directing the warming-up fluid into the coil element of the enclosure (10) and into the tank (8) in relation to the temperature of the fluid passing through said induction pipe.

Claim 11

Dependent Claim 156 words

Fluid induction device, fitted inside a tank for drawing in liquid fuels in particular, wherein said device comprises an enclosure resting on a tray, said enclosure being provided at its base with vertical directional slots communicating with the tank, and at its upper part with a member adapted to connect the enclosure with the tank, said enclosure containing on the one hand an induction pipe with an end portion which is bent toward the upper part of the enclosure and comprising a series of orifices distributed over its length, and on the other hand a fluid return pipe ensuring the warming up of the enclosure, said fluid return pipe comprising conduits extending at least partly from the upper part to the lower part of said enclosure and mounted on the inner wall of the enclosure, said conduits being provided at their base with a series of calibrated directional holes creating a gyratory flow inside said enclosure.

Claim 12

Dependent Claim 156 words

Fluid induction device, fitted inside a tank for drawing in liquid fuels in particular, wherein said device comprises an enclosure resting on a tray, said enclosure being provided at its base with vertical directional slots communicating with the tank, and at its upper part with a member adapted to connect the enclosure with the tank, said enclosure containing on the one hand an induction pipe with an end portion which is bent toward the upper part of the enclosure and comprising a series of orifices distributed over its length, and on the other hand a fluid return pipe ensuring the warming up of the enclosure, said fluid return pipe comprising conduits extending at least partly from the upper part to the lower part of said enclosure and mounted on the inner wall of the enclosure, said conduits being provided at their base with a series of calibrated directional holes creating a gyratory flow inside said enclosure.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1988-08-12	1989-02-11	1989-08-13	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1992-08-12	1993-02-11	1993-08-13	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1996-08-12	1997-02-11	1997-08-13	$7700.00	Window Closed / Lapsed

Induction device fitted inside a tank for drawing in fluids such as liquid fuels

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