US3790030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid resin spray dispensers
Assignee: PMC Inc
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Filing: 1971-11-08
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Granted: 1974-02-05
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Expires: 1991-11-08
Abstract
Abstract Resin and catalyst, respectively, in unaerated liquid form are pumped from containers by interconnected pumps having a common drive motor and delivered in accurate proportions to a triggeroperated dispensing gun. The pump motor is controlled by back pressure of liquid delivered by a pump so that, when resin and catalyst control valves in the gun body are opened simultaneously, lowering the pressure in the supply lines, operation of the pump motor will be initiated automatically. To enable the relatively viscous resin and the relatively fluid catalyst to be supplied to the gun body in accurate proportions of the order of one-hundred times as much resin as catalyst by weight despite the employment of long lines, such as thirty feet, the catalyst supply line is a tube having in it a core rod to provide a restricted annular passage. Resin and catalyst supplied separately to the gun body pass through a tortuous mixing passage in the gun body for the purpose of mixing the resin and catalyst thoroughly before passage of the mixture through the spray gun aperture. The small mixing chamber in the gun body can be cleaned by supplying to it a suitable solvent, such as acetone, from a container connected to the gun body mixing camber by a tube. If desired, chopped reinforcing strand material can be blown into the resin spray to be deposited with the resin.
Inventors
- 👤 F Ives
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:44
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/74; B29B7/7438; B05; B05B; B05B7/00; B05B7/02; B05B7/04; B05B7/0408; B05B7/12; B05B7/1209
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
160 words
Mechanism for dispensing an unaerated liquid catalyst and resin mixture comprising unaerated liquid resin pumping means for supplying unaerated liquid resin under pressure, unaerated liquid catalyst pumping means for supplying unaerated liquid catalyst under pressure, mixing means including a mixing chamber receiving unaerated liquid resin under pressure from said resin pumping means and a catalyst supply member having an interior passage for flow of catalyst therethrough from said catalyst pumping means to said mixing chamber, said catalyst supply member having an end face around said Interior passage, exposed to said mixing chamber and having elongated grooves depressed in said end face, the lengths of said grooves radiating outwardly from said interior passage and the inner ends of said grooves opening into said interior passage, said radiating grooves dispersing into liquid resin within said mixing chamber catalyst flowing from the interior passage of said catalyst supply member, and discharge means for discharge of resin and catalyst mixture from said mixing means.
Claim 2
Dependent Claim
160 words
Mechanism for dispensing an unaerated liquid catalyst and resin mixture comprising unaerated liquid resin pumping means for supplying unaerated liquid resin under pressure, unaerated liquid catalyst pumping means for supplying unaerated liquid catalyst under pressure, mixing means including a mixing chamber receiving unaerated liquid resin under pressure from said resin pumping means and a catalyst supply member having an interior passage for flow of catalyst therethrough from said catalyst pumping means to said mixing chamber, said catalyst supply member having an end face around said Interior passage, exposed to said mixing chamber and having elongated grooves depressed in said end face, the lengths of said grooves radiating outwardly from said interior passage and the inner ends of said grooves opening into said interior passage, said radiating grooves dispersing into liquid resin within said mixing chamber catalyst flowing from the interior passage of said catalyst supply member, and discharge means for discharge of resin and catalyst mixture from said mixing means.
Claim 3
Dependent Claim
28 words
The mechanism defined in claim 1, and tortuous passage means connecting the mixing chamber and the discharge means for effecting further mixing of resin and catalyst flowing therethrough.
Claim 4
Dependent Claim
70 words
The mechanism defined in claim 1, a resin supply duct connecting the resin pumping means to one side of the mixing chamber, the catalyst supply member connecting the catalyst pumping means to the opposite side of the mixing chamber, and the openings into the mixing chamber of said resin supply duct and of the catalyst supply member interior passage being substantially aligned with each other and directed in opposite directions.
Claim 5
Dependent Claim
33 words
The mechanism defined in claim 1, the catalyst supply member having an end portion projecting a substantial distance into the mixing chamber the end face of which is disposed around the interior passage.
Claim 6
Dependent Claim
181 words
Mechanism for dispensing an unaerated liquid catalyst and resin mixture comprising unaerated liquid resin pumping means for supplying unaerated liquid resin under pressure, unaerated liquid catalyst pumping means for supplying unaerated liquid catalyst under pressure, mixing means including a mixing chamber receiving unaerated liquid resin under pressure from said resin pumping means and unaerated liquid catalyst under pressure from said catalyst pumping means and mixing them in said mixing chamber, and discharge means for discharge of resin and catalyst mixture from said mixing means, said mixing means further including tortuous passage means connecting said mixing chamber and said discharge means for effecting further mixing of resin and catalyst flowing therethrough, said tortuous passage means having an internal cavity with a flat wall at one side thereof, centrally-located passage means communicating with the side of said internal cavity opposite said flat wall for flow of both resin and catalyst therethrough toward said flat wall and a multiplicity of peripheral passages arranged around the margin of said flat wall and communicating with said internal cavity for flow of both resin and catalyst therethrough.
Claim 7
Dependent Claim
181 words
Mechanism for dispensing an unaerated liquid catalyst and resin mixture comprising unaerated liquid resin pumping means for supplying unaerated liquid resin under pressure, unaerated liquid catalyst pumping means for supplying unaerated liquid catalyst under pressure, mixing means including a mixing chamber receiving unaerated liquid resin under pressure from said resin pumping means and unaerated liquid catalyst under pressure from said catalyst pumping means and mixing them in said mixing chamber, and discharge means for discharge of resin and catalyst mixture from said mixing means, said mixing means further including tortuous passage means connecting said mixing chamber and said discharge means for effecting further mixing of resin and catalyst flowing therethrough, said tortuous passage means having an internal cavity with a flat wall at one side thereof, centrally-located passage means communicating with the side of said internal cavity opposite said flat wall for flow of both resin and catalyst therethrough toward said flat wall and a multiplicity of peripheral passages arranged around the margin of said flat wall and communicating with said internal cavity for flow of both resin and catalyst therethrough.
Claim 8
Dependent Claim
51 words
The mechanism defined in claim 5, in which the tortuous passage means includes a plurality of stacked baffle disks, each baffle disk having peripheral fingers projecting axially from the margin thereof with grooves therebetween forming the peripheral passages, said fingers effecting spacing of the peripheral passages from an adjacent baffle disk.
Claim 9
Dependent Claim
171 words
Mechanism for dispensing an unaerated liquid catalyst and resin mixture comprising unaerated liquid resin pumping means for supplying unaerated liquid resin under pressure, unaerated liquid catalyst pumping means for supplying unaerated liquid catalyst under pressure, mixing means connected to said resin pumping means for receiving unaerated liquid resin under pressure therefrom and also connected to said catalyst pumping means for receiving unaerated liquid catalyst under pressure therefrom and mixing said resin and catalyst, discharge means for discharge of resin and catalyst mixture from said mixing means, flushing solvent supply means connected to said mixing means at the same time that said resin pumping means and said catalyst pumping means are connected to said mixing means for supplying solvent thereto to flush out of said mixing means and said discharge means catalyst and resin mixture residue, and trigger control means movable in one direction to control discharge of resin and catalyst mixture from said mixing means and movable in a different direction to control supply of flushiNg solvent to said mixing means.
Claim 10
Dependent Claim
171 words
Mechanism for dispensing an unaerated liquid catalyst and resin mixture comprising unaerated liquid resin pumping means for supplying unaerated liquid resin under pressure, unaerated liquid catalyst pumping means for supplying unaerated liquid catalyst under pressure, mixing means connected to said resin pumping means for receiving unaerated liquid resin under pressure therefrom and also connected to said catalyst pumping means for receiving unaerated liquid catalyst under pressure therefrom and mixing said resin and catalyst, discharge means for discharge of resin and catalyst mixture from said mixing means, flushing solvent supply means connected to said mixing means at the same time that said resin pumping means and said catalyst pumping means are connected to said mixing means for supplying solvent thereto to flush out of said mixing means and said discharge means catalyst and resin mixture residue, and trigger control means movable in one direction to control discharge of resin and catalyst mixture from said mixing means and movable in a different direction to control supply of flushiNg solvent to said mixing means.
Claim 11
Dependent Claim
185 words
Mechanism for dispensing an unaerated liquid catalyst and resin mixture comprising unaerated liquid resin positive displacement pumping means for supplying unaerated liquid resin under pressure, unaerated liquid catalyst positive displacement pumping means for supplying unaerated liquid catalyst under pressure, pump-driving means for driving both of said pumping means in synchronism, mixing means, resin conduit means connecting said resin pumping means to said mixing means for delivering unaerated liquid resin to said mixing means, catalyst conduit means connecting said catalyst pumping means to said mixing means for delivering unaerated liquid catalyst to said mixing means and including a catalyst supply hose and a flexible solid core rod of plastic material received in the bore of said catalyst supply hose to form a small annular passage providing high resistance to flow of liquid catalyst therethrough, first accumulator means connected to said resin conduit means to damp surging of resin flow to said mixing means, second accumulator means connected to said catalyst conduit means to damp surging of catalyst flow to said mixing means, and discharge means for discharge of resin and catalyst mixture from said mixing means.
Claim 12
Dependent Claim
185 words
Mechanism for dispensing an unaerated liquid catalyst and resin mixture comprising unaerated liquid resin positive displacement pumping means for supplying unaerated liquid resin under pressure, unaerated liquid catalyst positive displacement pumping means for supplying unaerated liquid catalyst under pressure, pump-driving means for driving both of said pumping means in synchronism, mixing means, resin conduit means connecting said resin pumping means to said mixing means for delivering unaerated liquid resin to said mixing means, catalyst conduit means connecting said catalyst pumping means to said mixing means for delivering unaerated liquid catalyst to said mixing means and including a catalyst supply hose and a flexible solid core rod of plastic material received in the bore of said catalyst supply hose to form a small annular passage providing high resistance to flow of liquid catalyst therethrough, first accumulator means connected to said resin conduit means to damp surging of resin flow to said mixing means, second accumulator means connected to said catalyst conduit means to damp surging of catalyst flow to said mixing means, and discharge means for discharge of resin and catalyst mixture from said mixing means.
Claim 13
Dependent Claim
167 words
Mechanism for dispensing an unaerated liquid catalyst and resin mixture, comprising unaerated liquid resin pumping means for supplying unaerated liquid resin under pressure, unaerated liquid catalyst pumping means for supplying unaerated liquid catalyst under pressure, mixing means including a mixing chamber having outlet means in one side thereof, receiving unaerated liquid resin under pressure from said resin pumping means through a passage directed generally transversely of the direction of flow of catalyst and resin mixture through said outlet means, and a catalyst supply member having an interior passage for flow of catalyst therethrough from said catalyst pumping means to said mixing chamber directed generally transversely of the direction of flow of catalyst and resin mixture through said outlet means and opposite to said liquid resin passage and having a valve at the discharge end of said interior passage operable to close the mixing chamber end of said interior passage for preventing flow of liquid from said mixing chamber into said interior passage of said catalyst supply member.
Claim 14
Dependent Claim
167 words
Mechanism for dispensing an unaerated liquid catalyst and resin mixture, comprising unaerated liquid resin pumping means for supplying unaerated liquid resin under pressure, unaerated liquid catalyst pumping means for supplying unaerated liquid catalyst under pressure, mixing means including a mixing chamber having outlet means in one side thereof, receiving unaerated liquid resin under pressure from said resin pumping means through a passage directed generally transversely of the direction of flow of catalyst and resin mixture through said outlet means, and a catalyst supply member having an interior passage for flow of catalyst therethrough from said catalyst pumping means to said mixing chamber directed generally transversely of the direction of flow of catalyst and resin mixture through said outlet means and opposite to said liquid resin passage and having a valve at the discharge end of said interior passage operable to close the mixing chamber end of said interior passage for preventing flow of liquid from said mixing chamber into said interior passage of said catalyst supply member.
Claim 15
Dependent Claim
26 words
The mechanism defined in claim 9, in which the valve includes an annular flange projecting beyond the opening of the interior passage transversely of such passage.
Claim 16
Dependent Claim
187 words
Mechanism for dispensing an unaerated liquid catalyst and resin mixture, comprising unaerated liquid resin pumping means for supplying unaerated liquid resin under pressure, unaerated liquid catalyst pumping means for supplying unaerated liquid catalyst under pressure, mixing means including a mixing chamber having outlet means in one side thereof, receiving unaerated liquid resin under pressure from said resin pumping means through a passage directed generally transversely of the direction of flow of catalyst and resin mixture through said outlet means, and a catalyst supply member extending through an inner wall of said mixing chamber and having an interior passage opening through the inner end of said catalyst supply member for flow of catalyst therethrough from said catalyst pumping means to said mixing chamber, the inner end portion of said catalyst supply member projecting into said mixing chamber a substantial distance beyond the inner wall of said mixing chamber through which said catalyst supply member extends with the passage through said catalyst supply member being directed generally transversely of the direction of flow of catalyst and resin mixture through said outlet means and opposite to said liquid resin passage.
Claim 17
Dependent Claim
187 words
Mechanism for dispensing an unaerated liquid catalyst and resin mixture, comprising unaerated liquid resin pumping means for supplying unaerated liquid resin under pressure, unaerated liquid catalyst pumping means for supplying unaerated liquid catalyst under pressure, mixing means including a mixing chamber having outlet means in one side thereof, receiving unaerated liquid resin under pressure from said resin pumping means through a passage directed generally transversely of the direction of flow of catalyst and resin mixture through said outlet means, and a catalyst supply member extending through an inner wall of said mixing chamber and having an interior passage opening through the inner end of said catalyst supply member for flow of catalyst therethrough from said catalyst pumping means to said mixing chamber, the inner end portion of said catalyst supply member projecting into said mixing chamber a substantial distance beyond the inner wall of said mixing chamber through which said catalyst supply member extends with the passage through said catalyst supply member being directed generally transversely of the direction of flow of catalyst and resin mixture through said outlet means and opposite to said liquid resin passage.
Claim 18
Dependent Claim
54 words
The mechanism defined in claim 11, in which the inner end portion of the catalyst supply member projects into the mixing chamber beyond its inner wall at least approximately one-half the width of the mixing chambeR measured in a direction parallel to the length of the interior passage extending through the catalyst supply member.
Claim 19
Dependent Claim
198 words
Mechanism for dispensing an unaerated liquid catalyst and resin mixture, comprising unaerated liquid resin pumping means for supplying unaerated liquid resin under pressure, unaerated liquid catalyst pumping means for supplying unaerated liquid catalyst under pressure, mixing means including a mixing chamber receiving unaerated liquid resin under pressure from said resin pumping means and unaerated liquid catalyst under pressure from said catalyst pumping means and mixing them in said mixing chamber, and discharge means for discharge of resin and catalyst mixture from said mixing means, said mixing means further including a plurality of stacked baffle disks of greater radial extent than axial extent located between said mixing chamber and said discharge means, one baffle disk having a central aperture of a width less than half the radial width of such disk and an adjacent baffle disk having fingers projecting axially from the margin thereof with grooves therebetween forming peripheral passages spaced outwardly from said central aperture, said fingers effecting spacing of the peripheral passages from an adjacent baffle disk, said central aperture and said peripheral passages cooperatively forming tortuous passage means between said mixing chamber and said discharge means for effecting further mixing of resin and catalyst flowing therethrough.
Claim 20
Dependent Claim
198 words
Mechanism for dispensing an unaerated liquid catalyst and resin mixture, comprising unaerated liquid resin pumping means for supplying unaerated liquid resin under pressure, unaerated liquid catalyst pumping means for supplying unaerated liquid catalyst under pressure, mixing means including a mixing chamber receiving unaerated liquid resin under pressure from said resin pumping means and unaerated liquid catalyst under pressure from said catalyst pumping means and mixing them in said mixing chamber, and discharge means for discharge of resin and catalyst mixture from said mixing means, said mixing means further including a plurality of stacked baffle disks of greater radial extent than axial extent located between said mixing chamber and said discharge means, one baffle disk having a central aperture of a width less than half the radial width of such disk and an adjacent baffle disk having fingers projecting axially from the margin thereof with grooves therebetween forming peripheral passages spaced outwardly from said central aperture, said fingers effecting spacing of the peripheral passages from an adjacent baffle disk, said central aperture and said peripheral passages cooperatively forming tortuous passage means between said mixing chamber and said discharge means for effecting further mixing of resin and catalyst flowing therethrough.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |