US3580431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerosol valve tip and stem assembly and method of assembling same
Assignee: Pittway Corp
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Filing: 1970-03-20
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Granted: 1971-05-25
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Expires: 1990-03-20
Abstract
Abstract This application describes and illustrates a method of making an aerosol valve tip and stem assembly and the interlocked assembly. The interlocked assembly is comprised of a tip and stem, one being a hard material defining a recess or notch, and the other being of a soft cold-flowable material that is caused to coldflow into the notch when the two members are telescopically assembled. When the members are assembled, the soft cold-flowable material cold-flows into the notch to interlock the members and to make disassembly thereof difficult.
Inventors
- 👤 Clarence O Kuffer
- 👤 Thomas Mcavoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:08
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/16; B65D83/162; B05; B05B; B05B1/00; B05B1/34; B05B1/3405; B05B1/341; B05B1/3421; B05B1/3431; B05B1/3436
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
140 words
An aerosol dispenser valve assembly mounted on an aerosol container comprising an elongate smooth-walled hard stem and a soft plastic actuator button defining a discharge passage and axially receiving one end of said stem in a smooth-walled bore therein, said actuator button receiving said stem in an interference fit and said actuator button bore and said stem being complementarily configured; said stem defining a recess in its outer surface in confronting relation to the wall of the bore of said actuator button, said interference fit autoflowing button material adjacent said recess into said recess to physically interlock said stem and said actuator button and to resist removal of said actuator button from said stem whereby the force to remove said button is greater than the force to assemble same and the autoflowed material assumes substantially the shape of the recess.
Claim 2
Dependent Claim
140 words
An aerosol dispenser valve assembly mounted on an aerosol container comprising an elongate smooth-walled hard stem and a soft plastic actuator button defining a discharge passage and axially receiving one end of said stem in a smooth-walled bore therein, said actuator button receiving said stem in an interference fit and said actuator button bore and said stem being complementarily configured; said stem defining a recess in its outer surface in confronting relation to the wall of the bore of said actuator button, said interference fit autoflowing button material adjacent said recess into said recess to physically interlock said stem and said actuator button and to resist removal of said actuator button from said stem whereby the force to remove said button is greater than the force to assemble same and the autoflowed material assumes substantially the shape of the recess.
Claim 3
Dependent Claim
44 words
The aerosol dispenser valve assembly of claim 1 herein the recess is a wedge-shaped transverse annular notch and has a transverse shoulder and a sidewall sloping downwardly and outwardly of said hard stem from the interior edge of said transverse shoulder toward said button.
Claim 4
Dependent Claim
167 words
An aerosol valve assembly mounted on an aerosol container, said assembly having a stem and a separate tip secured thereto and defining a continuous flow path therebetween, said stem comprising a hard elongate cylindrical portion defining a peripheral notch intermediate the ends of the cylindrical portion, said notch tapering inwardly and upwardly of said stem in said cylindrical portion and terminating in a generally transverse shoulder, said tip being of a soft cold-flowable material and defining an elongate cylindrical socket of generally uniform cross section for receiving said one end of said stem and said peripheral notch, the diameter of said cylindrical socket being slightly less than the peripheral diameter of the cylindrical portion of said stem prior to assembly of said stem and tip, and whereby when said stem is inserted into said socket, the material of said socket cold-flows into said notch thereby to provide a sealingly interlocked stem and tip assembly and to resist disassembly, the disassembly force being greater than the assembly force.
Claim 5
Dependent Claim
167 words
An aerosol valve assembly mounted on an aerosol container, said assembly having a stem and a separate tip secured thereto and defining a continuous flow path therebetween, said stem comprising a hard elongate cylindrical portion defining a peripheral notch intermediate the ends of the cylindrical portion, said notch tapering inwardly and upwardly of said stem in said cylindrical portion and terminating in a generally transverse shoulder, said tip being of a soft cold-flowable material and defining an elongate cylindrical socket of generally uniform cross section for receiving said one end of said stem and said peripheral notch, the diameter of said cylindrical socket being slightly less than the peripheral diameter of the cylindrical portion of said stem prior to assembly of said stem and tip, and whereby when said stem is inserted into said socket, the material of said socket cold-flows into said notch thereby to provide a sealingly interlocked stem and tip assembly and to resist disassembly, the disassembly force being greater than the assembly force.
Claim 6
Dependent Claim
17 words
7 The aerosol valve assembly of claim 3 in which the notch is a continuous annular notch.
Claim 7
Dependent Claim
36 words
The aerosol valve assembly of claim 3 in which the diameter of said socket is substantially equal to the diameter of said notch at its innermost dimension prior to assembly of the said stem and tip.
Claim 8
Dependent Claim
13 words
The aerosol valve assembly of claim 3 in which said tip is polyethylene.
Claim 9
Independent Claim
160 words
A method of sealingly interlocking an aerosol valve stem and tip, the steps comprising, providing a tip of a soft cold-flowable material defining an elongate smooth-walled stem receiving bore and a fluid flow passage therethrough, providing an elongate hollow stem of a hard material, said stem having a smooth-walled external peripheral shape complementary to but slightly greater in size than the internal shape of said bore, said stem having a transverse notch in the external wall of said stem adjacent one end thereof, forcing said stem axially into said bore to position said notch within said tip to provide a tight sealing fit between said stem and said tip, and, without external force, inelastically cold-flowing tip material confronting said notch into said notch to interlock said stem and said tip whereby the force required to disassemble said interlocked members is greater than the force required to assemble them, and whereby the cold-flowed material assumes substantially the shape of said notch.
Claim 10
Independent Claim
160 words
A method of sealingly interlocking an aerosol valve stem and tip, the steps comprising, providing a tip of a soft cold-flowable material defining an elongate smooth-walled stem receiving bore and a fluid flow passage therethrough, providing an elongate hollow stem of a hard material, said stem having a smooth-walled external peripheral shape complementary to but slightly greater in size than the internal shape of said bore, said stem having a transverse notch in the external wall of said stem adjacent one end thereof, forcing said stem axially into said bore to position said notch within said tip to provide a tight sealing fit between said stem and said tip, and, without external force, inelastically cold-flowing tip material confronting said notch into said notch to interlock said stem and said tip whereby the force required to disassemble said interlocked members is greater than the force required to assemble them, and whereby the cold-flowed material assumes substantially the shape of said notch.
Claim 11
Dependent Claim
15 words
The method of claim 7 in which said transverse notch is a wedge-shaped annular notch.
References Cited (Backward Citations)
US3100068A
Cited
US3129893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |