US3876114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple ingredient metering, mixing and dispensing apparatus
Assignee: Artek Ind Inc
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Filing: 1973-02-14
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Granted: 1975-04-08
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Expires: 1993-02-14
Abstract
Abstract The dispensing apparatus is especially adapted for metering, mixing and dispensing small "shots" of synthetic resin material in liquid form with a minute percentage of a liquid catalyst for patching defects in wood panels. A hand-held dispensing gun of the apparatus has a static mix tube extending from a mixing chamber in a dispensing head where a single air-operated piston upon trigger actuation simultaneously opens resin and catalyst infeed ports to the mixing chamber. At the same time, trigger actuation connects a control air line from a source of compressed air to a pilot air line to start an air motor which drives resin and catalyst metering pumps. These pumps are driven from a common drive shaft with an adjustable mechanical linkage for adjusting the catalyst-resin metering ratio. The pumps meter resin and catalyst through separate lines to the mix chamber of the dispensing gun. A thermostatically controlled heater preheats the resin as it flows to the dispensing gun. An air-powered flush system selectively flushes the mixing chamber and mix tube with an atomized solvent to prevent set-up of resin in these parts. A combined electrical-air operated flush-warning system with an automatic trigger-actuated reset reminds the operator to flush the system when the gun is not used to dispense material for a prolonged period.
Inventors
- 👤 Prentiss C Hicks
- 👤 Fred C Turrentine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:45
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/24; B05B7/26; B05B7/28; B05B7/32; B05B7/16
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
523 words
Apparatus for metering, mixing and dispensing two liquid components of a synthetic material, said apparatus comprising in combination: dispensing means including means defining a mixing chamber for receiving said two liquid components, mixing tube means leading from said mixing chamber to a dispensing outlet opening, air-actuated valve means at entrances to said chamber for controlling the simultaneous admission of said two liquid components to said mixing chamber, and trigger-actuating means for controlling the simultaneous operation of said air-actuated valve means, a first metering means for metering a first of said two liquid components from a source of said first component to said mixing chamber, and first component passage means leading from the outlet side of said first metering means to said mixing chamber, a second metering means for metering the second of said two components from a second component source to said mixing chamber, and second component passage means leading from the outlet side of said second metering means to said mixing chamber, means including a source of air pressure for operating said first and second metering means, adjustment means for changing said metering ratio, first air passage means in communication with said air pressure source and leading to said first and second metering means, and normally closed air-operated valve-operated valve means in said first air passage means for controlling the operation of said metering means, trigger-operated air control means on said dispensing means operated by said trigger-actuating means, second air passage means in communication with said air pressure source and leading to said trigger-operated air control means, third air passage means extending from said triggering operated air control means to said normally closed air-operated valve means in said first air passage means and to said airoperated valve means of said dispensing means in a manner such that actuation of said trigger means simultaneously (1) opens said air-operated valve means in said first air passage means to operate said first and second metering means and (2) opens said air-operated valve means of said dispensing means to admit simultaneously said first and second liquid components from said first and second component passage means to said mixing chamber, a flush means comprising a source of liquid solvent, solvent passage means extending from said solvent source to said mixing chamber, fourth air passage means connected to said air pressure source and leading to said solvent source for forcing solvent into said solvent passage means, flush valve means in said solvent passage means at a position remote from said dispensing means, and a fifth air passage means connected to said air pressure source and to said solvent passage means at said flush valve means, said flush valve means being operable (1) in a first position to prevent both air flow and solvent flow through said solvent passage means to said mixing chamber, (2) in a second position to admit only a charge of solvent into said solvent passage means downstream of said flush valve means, and (3) in a third position to admit only pressurized air from said fifth air passage means into said solvent passage means and thereby propel said solvent charge into said mixing chamber.
Claim 2
Dependent Claim
523 words
Apparatus for metering, mixing and dispensing two liquid components of a synthetic material, said apparatus comprising in combination: dispensing means including means defining a mixing chamber for receiving said two liquid components, mixing tube means leading from said mixing chamber to a dispensing outlet opening, air-actuated valve means at entrances to said chamber for controlling the simultaneous admission of said two liquid components to said mixing chamber, and trigger-actuating means for controlling the simultaneous operation of said air-actuated valve means, a first metering means for metering a first of said two liquid components from a source of said first component to said mixing chamber, and first component passage means leading from the outlet side of said first metering means to said mixing chamber, a second metering means for metering the second of said two components from a second component source to said mixing chamber, and second component passage means leading from the outlet side of said second metering means to said mixing chamber, means including a source of air pressure for operating said first and second metering means, adjustment means for changing said metering ratio, first air passage means in communication with said air pressure source and leading to said first and second metering means, and normally closed air-operated valve-operated valve means in said first air passage means for controlling the operation of said metering means, trigger-operated air control means on said dispensing means operated by said trigger-actuating means, second air passage means in communication with said air pressure source and leading to said trigger-operated air control means, third air passage means extending from said triggering operated air control means to said normally closed air-operated valve means in said first air passage means and to said airoperated valve means of said dispensing means in a manner such that actuation of said trigger means simultaneously (1) opens said air-operated valve means in said first air passage means to operate said first and second metering means and (2) opens said air-operated valve means of said dispensing means to admit simultaneously said first and second liquid components from said first and second component passage means to said mixing chamber, a flush means comprising a source of liquid solvent, solvent passage means extending from said solvent source to said mixing chamber, fourth air passage means connected to said air pressure source and leading to said solvent source for forcing solvent into said solvent passage means, flush valve means in said solvent passage means at a position remote from said dispensing means, and a fifth air passage means connected to said air pressure source and to said solvent passage means at said flush valve means, said flush valve means being operable (1) in a first position to prevent both air flow and solvent flow through said solvent passage means to said mixing chamber, (2) in a second position to admit only a charge of solvent into said solvent passage means downstream of said flush valve means, and (3) in a third position to admit only pressurized air from said fifth air passage means into said solvent passage means and thereby propel said solvent charge into said mixing chamber.
Claim 3
Dependent Claim
65 words
Apparatus according to claim 1 including flush-warning means for indicating when said flush means should be operated including timer means, warning signal means operated by said timer means when said timer means times out, reset means for resetting said timer means, and means operably interconnecting said trigger-actuating means and said reset means to reset automatically said timer means upon each actuation of said trigger means.
Claim 4
Dependent Claim
29 words
Apparatus according to claim 2 wherein said reset means is air-pressure-operated and said means operably interconnecting said trigger means and said reset means includes said third air passage means.
Claim 5
Dependent Claim
508 words
Apparatus for metering, mixing and dispensing two liquid components of a synthetic material, said apparatus comprising in combination: dispensing means including means defining a mixing chamber for receiving said two liquid components, mixing tube means leading from said mixing chamber to a dispensing outlet opening, air-actuated valve means for controlling the simultaneous admission of said two liquid components to said mixing chamber, and trigger-actuating means, a first metering pump means for pumping a first of said two liquid components from a source of said first component to said mixing chamber, and first component passage means leading from the outlet side of said first pump means to said mixing chamber, a second metering pump means for pumping the second of said two components from a second component source to said mixing chamber, and second component passage means leading from the outlet side of said second pump means to said mixing chamber, drive means for driving said first and second metering pump means, including a single air-operated motor means and mechanical drive transmission means interconnecting said motor means and said first and second pump means for driving both said pump means at a predetermined metering ratio, said mechanical drive transmission means including ratio adjustment means for changing said metering ratio, first air passage means in communication with air pressure source and leading to said air motor means, and normally closed air-operated valve means in said first air passage means for controlling the operation of said motor means, trigger-operated air control means of said dispensing means operated by said trigger-actuating means, second air passage means in communication with said air pressure source and leading to said trigger-operated air control means, third air passage means extending from said trigger-operated air control means to said normally closed air-operated valve means in said first air passage means and to said air-operated valve means of said dispensing means in a manner such that actuation of said trigger means simultaneously (1) opens said air-operated valve means in said first air passage means to operate said air motor means and (2) opens said air-operated valve means of said dispensing means to admit simultaneously said first and second liquid components from said first and second component passage means to said mixing chamber, said first component being a single-component liquid resin and said second component being a liquid catalyst, said first pump means comprising a resin pump, said second pump means comprising a catalyst pump, a catalyst supply means positioned above said catalyst pump for feeding catalyst by gravity to the inlet side of said pump, said first component passage means comprising a resin passage, said second component passage means comprising a catalyst passage, a catalyst dump means positioned below said catalyst supply means, and a purge passage leading from said purge valve means to said catalyst dump means, said purge valve when open being operable to siphon catalyst from said catalyst supply means through said catalyst pump and purge passage to said catalyst dump means to purge said catalyst pump and catalyst passage of entrapped gases and impurities.
Claim 6
Dependent Claim
508 words
Apparatus for metering, mixing and dispensing two liquid components of a synthetic material, said apparatus comprising in combination: dispensing means including means defining a mixing chamber for receiving said two liquid components, mixing tube means leading from said mixing chamber to a dispensing outlet opening, air-actuated valve means for controlling the simultaneous admission of said two liquid components to said mixing chamber, and trigger-actuating means, a first metering pump means for pumping a first of said two liquid components from a source of said first component to said mixing chamber, and first component passage means leading from the outlet side of said first pump means to said mixing chamber, a second metering pump means for pumping the second of said two components from a second component source to said mixing chamber, and second component passage means leading from the outlet side of said second pump means to said mixing chamber, drive means for driving said first and second metering pump means, including a single air-operated motor means and mechanical drive transmission means interconnecting said motor means and said first and second pump means for driving both said pump means at a predetermined metering ratio, said mechanical drive transmission means including ratio adjustment means for changing said metering ratio, first air passage means in communication with air pressure source and leading to said air motor means, and normally closed air-operated valve means in said first air passage means for controlling the operation of said motor means, trigger-operated air control means of said dispensing means operated by said trigger-actuating means, second air passage means in communication with said air pressure source and leading to said trigger-operated air control means, third air passage means extending from said trigger-operated air control means to said normally closed air-operated valve means in said first air passage means and to said air-operated valve means of said dispensing means in a manner such that actuation of said trigger means simultaneously (1) opens said air-operated valve means in said first air passage means to operate said air motor means and (2) opens said air-operated valve means of said dispensing means to admit simultaneously said first and second liquid components from said first and second component passage means to said mixing chamber, said first component being a single-component liquid resin and said second component being a liquid catalyst, said first pump means comprising a resin pump, said second pump means comprising a catalyst pump, a catalyst supply means positioned above said catalyst pump for feeding catalyst by gravity to the inlet side of said pump, said first component passage means comprising a resin passage, said second component passage means comprising a catalyst passage, a catalyst dump means positioned below said catalyst supply means, and a purge passage leading from said purge valve means to said catalyst dump means, said purge valve when open being operable to siphon catalyst from said catalyst supply means through said catalyst pump and purge passage to said catalyst dump means to purge said catalyst pump and catalyst passage of entrapped gases and impurities.
Claim 7
Dependent Claim
161 words
Apparatus according to claim 4 including means for priming said catalyst pump, said priming meand comprising a bypass air passage bypassing said air-operated valve means in said first air passage means, a manually operated normally closed priming valve means in said bypass air passage for operating said air motor means when open, a resin recirculating passage for recirculating resin from the outlet to the inlet side of said resin pump, and manually operated recirculating valve means operable in a first position to close said resin passage and direct resin flow from said resin pump into said reciruclation passage and operable in a second position to close said recirculation passage and direct resin flow from said resin pump into said resin passage, whereby with said priming valve open and said recirculation valve in its said first position said air motor will operate said resin and catalyst pumps to build up catalyst pressure in said catalyst passage without dispensing any resin or catalyst.
Claim 8
Dependent Claim
184 words
In a liquid material-dispensing system including a dispensing means having manual dispenser-actuating means for operating said dispensing means to dispense said liquid material, and a flush means for flushing liquid material from said dispensing means including a manually operable flush-actuating means, a flush-warning means for warning an operator of said dispensing system when said system should be flushed, comprising timer means, warning signal means operated by said timer means when said timer means times out, air-operated timer-actuating means for commencing a timing cycle of said timer means, timer reset means operably connected to said timer-actuating means for resetting said timer means to the beginning of its timing cycle, reset-operating means operably interconnecting said dispenser-actuating means and said timer reset means in a manner such that said timer is reset upon each actuation of said dispenser-actuating means, said reset means being air operated and said reset-operating means including air passage means extending from said dispenser-actuating means to said reset means, said dispenser-actuating means being operable upon actuation to connect said air passage means to a source of air pressure sufficient to operate said reset means.
Claim 9
Dependent Claim
184 words
In a liquid material-dispensing system including a dispensing means having manual dispenser-actuating means for operating said dispensing means to dispense said liquid material, and a flush means for flushing liquid material from said dispensing means including a manually operable flush-actuating means, a flush-warning means for warning an operator of said dispensing system when said system should be flushed, comprising timer means, warning signal means operated by said timer means when said timer means times out, air-operated timer-actuating means for commencing a timing cycle of said timer means, timer reset means operably connected to said timer-actuating means for resetting said timer means to the beginning of its timing cycle, reset-operating means operably interconnecting said dispenser-actuating means and said timer reset means in a manner such that said timer is reset upon each actuation of said dispenser-actuating means, said reset means being air operated and said reset-operating means including air passage means extending from said dispenser-actuating means to said reset means, said dispenser-actuating means being operable upon actuation to connect said air passage means to a source of air pressure sufficient to operate said reset means.
Claim 10
Dependent Claim
356 words
In a liquid-dispensing system wherein first and second liquid components are caused to flow through separate component passages to a common mixing chamber in a dispensing head for intermixing just prior to dispensing through a dispensing means, a flush system comprising: a source of air pressure, a source of liquid solvent, solvent passage means extending from said solvent source to said mixing chamber, means including air pressure and a first air passage means extending from said air pressure source to said source of liquid solvent for inducing a flow of solvent from said source into said solvent passage means, second air passage means extending from said air pressure source to an intersection with said solvent passage means, and control valve means at said intersection operable (1) in a first position to prevent flow of both air and solvent through said solvent passage means toward said mixing chamber, (2) in a second position to admit a charge of solvent to the said solvent passage means between said valve means and said mixing chamber, and (3) in a third position to shut off flow from said solvent source and to admit air under pressure into said solvent passage means behind said solvent charge to propel said solvent charge into said mixing chamber under high pressure and there atomize said solvent and thereafter force the atomized solvent through said dispensing means to scrub said chamber and dispensing means, said control valve means being positioned in said solvent passage means at a point remotely upstream from said dispensing head, a flush warning means for warning an operator of said dispensing system when said system should be flushed including: timer means, warning signal means operated by said timer means when said timer means times out, timer actuating means for commencing a timing cycle of said timer means, timer reset means operably connected to said timer actuating means for resetting said timer means to the beginning of its timing cycle, and reset operating means operably interconnecting said dispenser actuating means and said timer reset means in a manner such that said timer is reset upon each actuation of said dispenser actuating means.
Claim 11
Dependent Claim
356 words
In a liquid-dispensing system wherein first and second liquid components are caused to flow through separate component passages to a common mixing chamber in a dispensing head for intermixing just prior to dispensing through a dispensing means, a flush system comprising: a source of air pressure, a source of liquid solvent, solvent passage means extending from said solvent source to said mixing chamber, means including air pressure and a first air passage means extending from said air pressure source to said source of liquid solvent for inducing a flow of solvent from said source into said solvent passage means, second air passage means extending from said air pressure source to an intersection with said solvent passage means, and control valve means at said intersection operable (1) in a first position to prevent flow of both air and solvent through said solvent passage means toward said mixing chamber, (2) in a second position to admit a charge of solvent to the said solvent passage means between said valve means and said mixing chamber, and (3) in a third position to shut off flow from said solvent source and to admit air under pressure into said solvent passage means behind said solvent charge to propel said solvent charge into said mixing chamber under high pressure and there atomize said solvent and thereafter force the atomized solvent through said dispensing means to scrub said chamber and dispensing means, said control valve means being positioned in said solvent passage means at a point remotely upstream from said dispensing head, a flush warning means for warning an operator of said dispensing system when said system should be flushed including: timer means, warning signal means operated by said timer means when said timer means times out, timer actuating means for commencing a timing cycle of said timer means, timer reset means operably connected to said timer actuating means for resetting said timer means to the beginning of its timing cycle, and reset operating means operably interconnecting said dispenser actuating means and said timer reset means in a manner such that said timer is reset upon each actuation of said dispenser actuating means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |