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US4738219A Expired / Lapsed US ⏱️ 0.0 years remaining

Coating apparatus

Assignee: Kansai Paint Co Ltd
•
Filing: 1987-07-02
•
Granted: 1988-04-19
•
Expires: 2007-07-02
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Abstract

Abstract A coating apparatus comprising a composition feeder for delivering an unadjusted coating composition from a composition source 1 via a composition supply pipe 4, a solvent feeder unit for delivering a solvent from a solvent source 2, 3 via a solvent supply pipe 5, 6, a mixer 18 connected to the composition supply pipe 4 and to the solvent supply pipe 5, 6 for adjusting the viscosity of the coating composition, an applicator 19 for spraying the adjusted coating composition supplied from the mixer 18 and a temperature sensor 14 disposed in a coating booth 13, the solvent feeder unit being provided with a regulator 15 for controlling the supply of the solvent to a predetermined rate in response to a signal from the temperature sensor 14, the solvent feeder unit preferably comprising the two feeders for the high- and low-temperature solvent sources, the apparatus having the advantage that the amount of solvent to be admixed with an unadjusted coating composition can be automatically adjusted to a specified value in accordance with the internal temperature of the coating booth, so that the composition is readily adjustable to a proper viscosity by being mixed with a proper solvent according to variations in the internal booth temperature.

Inventors

  • 👤 Atuhisa Fujisawa

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 02:14
CPC Classifications
B; B05; B05B; B05B12/00; B05B12/14; B05B12/1418; B05B12/08; B05B12/12; B05B7/00; B05B7/24; B05B7/26; B05B7/28; B05B7/32

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 111 words
A coating apparatus comprising a composition feeder for delivering an unadjusted coating composition from a composition source via a composition supply pipe, a solvent feeder unit for delivering a solvent from a solvent source via a solvent supply pipe, a mixer connected to the composition supply pipe and to the solvent supply pipe for adjusting a viscosity of the coating composition, an applicator for spraying the adjusted coating composition supplied from the mixer and a temperature sensor disposed in a coating booth, the solvent feeder unit being provided with a regulator for controlling the supply of the solvent to a predetermined rate in response to a signal from the temperature sensor.
Claim 2
Dependent Claim 111 words
A coating apparatus comprising a composition feeder for delivering an unadjusted coating composition from a composition source via a composition supply pipe, a solvent feeder unit for delivering a solvent from a solvent source via a solvent supply pipe, a mixer connected to the composition supply pipe and to the solvent supply pipe for adjusting a viscosity of the coating composition, an applicator for spraying the adjusted coating composition supplied from the mixer and a temperature sensor disposed in a coating booth, the solvent feeder unit being provided with a regulator for controlling the supply of the solvent to a predetermined rate in response to a signal from the temperature sensor.
Claim 3
Dependent Claim 124 words
A coating apparatus as defined in claim 1 wherein the solvent feeder unit comprises a first solvent feeder for delivering a solvent from a high-temperature solvent source via a first supply pipe and a second solvent feeder for delivering a solvent from a low-temperature solvent source via a second supply pipe, the first solvent feeder being provided with a first regulator for delivering a proper amount of supply from the first solvent feeder when the temperature detected by the temperature sensor is not lower than a preset value, the second solvent feeder being provided with a second regulator for delivering a proper amount of supply from the second solvent feeder when the temperature detected by the temperature sensor is lower than a preset value.
Claim 4
Dependent Claim 36 words
A coating apparatus as defined in claim 2 wherein the preset values for the first and second regulators are equal so that the solvent is supplied to the mixer from only one of the solvent feeders.
Claim 5
Dependent Claim 44 words
A coating apparatus as defined in claim 2 wherein the preset value for the first regulator is lower than the preset value for the second regulator to provide an intermediate temperature range for delivering a proper amount of supply from both the solvent feeders.
Claim 6
Dependent Claim 26 words
A coating apparatus as defined in claim 1 wherein the regulator is provided with a throttle valve for controlling an orifice in the solvent supply pipe.
Claim 7
Dependent Claim 29 words
A coating apparatus as defined in claim 1 wherein the regulator is provided with a pump controllable in the rate of delivery and connected to the solvent supply pipe.

References Cited (Backward Citations)

US2763575A Cited
US4019653A Cited
US4258656A Cited
US4173924A Cited
US4313369A Cited
SU902847A1 Cited
US4505945A Cited
US4687686A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1991-04-19 1991-10-19 1992-04-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1995-04-19 1995-10-19 1996-04-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1999-04-19 1999-10-19 2000-04-19 $7700.00 Window Closed / Lapsed

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