US3667682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray gun
Assignee: GROVHAC Inc
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Filing: 1970-07-20
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Granted: 1972-06-06
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Expires: 1990-07-20
Abstract
Abstract The disclosed gun for spraying atomized materials includes a housing having an orifice for discharge of the materials and atomizing air vent means associated with the orifice for atomizing the materials upon discharge from the orifice. A movable member and separate orifice closure member are reciprocally disposed in the housing and driven in sequence to provide for the venting of atomizing air through the vent means prior to the discharge of materials through the orifice. Adjustability is provided between the orifice containing member of the housing and the orifice closure member to compensate for wear therebetween, with such adjustability not materially affecting the flow volume of atomizing air. The main body and adjacent enclosure parts of the spray gun housing are secured together by a plurality of longitudinally extending fastening means to eliminate the need for distortion prone tools.
Inventors
- 👤 John M Purnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:28
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/02; B05B7/12; B05B7/1254; B05B7/1263; B05B7/1272; B05B1/00; B05B1/30; B05B1/3033; B05B1/304; B05B1/3046; B05B1/306
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
220 words
In a gun for spraying atomized fluent materials, a housing having a discharge orifice for the fluent materials, means for supplying the fluent materials to the housing, said housing having a bore longitudinally aligned with said discharge orifice, a movable member reciprocally disposed in the housing bore, an orifice closure member in said housing and extending rearwardly through said movable member, a carrier for the orifice closure member disposed rearwardly of said movable member, said carrier having a longitudinally extending through bore for receiving the orifice closUre member, means for movably securing the orifice closure member within the bore of said carrier, means biasing the carrier for the closure member forwardly to place said closure member in a position of closure over the orifice, and means for driving the movable member rearwardly within the housing bore, said movable member being initially movable relative to the orifice closure member and thereafter engaging its carrier to move the same along with the closure member rearwardly against the force of said biasing means to open the orifice and provide for the flow discharge of materials from the orifice said orifice closure member being selectively movable relative to the carrier to effect adjustment between the carrier and movable member, and said closure member being removable rearwardly from the bore of the carrier for replacement.
Claim 2
Dependent Claim
220 words
In a gun for spraying atomized fluent materials, a housing having a discharge orifice for the fluent materials, means for supplying the fluent materials to the housing, said housing having a bore longitudinally aligned with said discharge orifice, a movable member reciprocally disposed in the housing bore, an orifice closure member in said housing and extending rearwardly through said movable member, a carrier for the orifice closure member disposed rearwardly of said movable member, said carrier having a longitudinally extending through bore for receiving the orifice closUre member, means for movably securing the orifice closure member within the bore of said carrier, means biasing the carrier for the closure member forwardly to place said closure member in a position of closure over the orifice, and means for driving the movable member rearwardly within the housing bore, said movable member being initially movable relative to the orifice closure member and thereafter engaging its carrier to move the same along with the closure member rearwardly against the force of said biasing means to open the orifice and provide for the flow discharge of materials from the orifice said orifice closure member being selectively movable relative to the carrier to effect adjustment between the carrier and movable member, and said closure member being removable rearwardly from the bore of the carrier for replacement.
Claim 3
Dependent Claim
68 words
The invention as set forth in claim 1, wherein the housing comprises a longitudinally extending body mounting an orifice containing head at the forward end thereof and an end cap at the rear thereof, said head and end cap each having flange portions complementing the corresponding end of the housing body, and a plurality of longitudinally extending fastening means securing the head and end cap to the body.
Claim 4
Dependent Claim
63 words
The invention as set forth in claim 1, wherein the discharge orifice is disposed in an orifice containing member secured relative to the housing and the means biasing the carrier for the orifice closure member forwardly comprises a spring, and means to increase the biasing force of said spring to compensate for wear between said orifice containing member and the orifice closure member.
Claim 5
Dependent Claim
41 words
The invention as set forth in claim 3 wherein the means for movably securing the orifice closure member within the bore of said carrier is a threaded connection providing for relative movement therebetween to increase the biasing force of said spring.
Claim 6
Dependent Claim
79 words
The invention as set forth in claim 3 wherein an adjusting screw is threadedly engaged with the housing and the carrier for the orifice closure member is slidably disposed within a through bore in the adjusting screw, and wherein the spring for biasing the carrier for the orifice closure member is disposed between the adjusting screw and the carrier, said adjusting screw being selectively movable relative to the housing and carrier to increase the biasing force of said spring.
Claim 7
Dependent Claim
133 words
In a gun for spraying atomized fluent materials, a housing having a discharge orifice for the fluent materials and atomizing air vent means associated with the orifice to provide for atomizing of the materials upon discharge from the orifice, means for supplying the fluent materials to the housing, said housing having a stepped bore longitudinally aligned with said discharge orifice with the smaller bore portion disposed forwardly of the larger bore portion, a stepped plunger unit reciprocally disposed in the stepped housing bore, an orifice rearwardly to open the orifice and provide for materials flow through the orifice, said orifice closure member being selectively movable relative to the carrier to effect adjustment between the carrier and plunger unit, and said closure member being removable rearwardly from the bore of the carrier for replacement.
Claim 8
Dependent Claim
133 words
In a gun for spraying atomized fluent materials, a housing having a discharge orifice for the fluent materials and atomizing air vent means associated with the orifice to provide for atomizing of the materials upon discharge from the orifice, means for supplying the fluent materials to the housing, said housing having a stepped bore longitudinally aligned with said discharge orifice with the smaller bore portion disposed forwardly of the larger bore portion, a stepped plunger unit reciprocally disposed in the stepped housing bore, an orifice rearwardly to open the orifice and provide for materials flow through the orifice, said orifice closure member being selectively movable relative to the carrier to effect adjustment between the carrier and plunger unit, and said closure member being removable rearwardly from the bore of the carrier for replacement.
Claim 9
Dependent Claim
63 words
The invention as set forth in claim 6, wherein the discharge orifice is disposed in an orifice containing member secured relative to the housing and the means biasing the carrier for the orifice closure member forwardly comprises a spring, and means to increase the biasing force of said spring to compensate for wear between said orifice containing member and the orifice closure member.
Claim 10
Dependent Claim
41 words
The invention as set forth in claim 7, wherein the means for movably securing the orifice closure member within the bore of said carrier is a threaded connection providing for relative movement therebetween to increase the biasing force of said spring.
Claim 11
Dependent Claim
79 words
The invention as set forth in claim 7 wherein an adjusting screw is threadedly engaged with the housing and the carrIer for the orifice closure member is slidably disposed within a through bore in the adjusting screw, and wherein the spring for biasing the carrier for the orifice closure member is disposed between the adjusting screw and the carrier, said adjusting screw being selectively movable relative to the housing and carrier to increase the biasing force of said spring.
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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |