US3665158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic extrusion device
Assignee: Individual
•
Filing: 1970-07-31
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Granted: 1972-05-23
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Expires: 1990-07-31
Abstract
Abstract The device, in the form of a hand gun, includes a chamber for receiving plastic material and a nozzle assembly disposed along the gun barrel. The nozzle assembly includes a conical element having an eccentric opening. This conical element is rotatable between positions misaligning and aligning the eccentric opening with a similar eccentrically disposed opening in the barrel in communication with the chamber. An access cover is provided for the chamber whereby it can be loaded with plastic material. Heating elements are disposed about the chamber and a trigger assembly is connected to a wire for rotating the conical nozzle element. In operation, the plastic material in the chamber is heated. When the nozzle element is rotated into a position aligning its opening with the barrel opening by actuation of the trigger, the pressure generated by heating the plastic material in the chamber displaces molten plastic material through the aligned nozzle and barrel openings.
Inventors
- 👤 Don T Froedge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:12
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/005; B05C17/00523
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
176 words
A plastic extrusion device comprising a housing having a chamber for containing a plastic material, a value carried by said housing and having a passage in communication with said chamber for extruding molten plastic material therefrom, said value including an element movable between a first position preventing flow of molten plastic material from said chamber through said passage and a second position permitting flow of molten plastic material from said chamber through said passage, heating means carried by said housing for heating and melting the plastic material in said chamber to generate pressure sufficient to displace the molten plastic material from said chamber through said passage when said valve element lies in said second position, said chamber being otherwise substantially hermetically sealed when the plastic material is heated and flowed through said passage, the pressure developed in the chamber by heating and melting the plastic material constitutes the sole means for displacing the molten plastic material from the chamber, and means carried by said housing for moving said valve element between said first and second positions
Claim 2
Dependent Claim
176 words
A plastic extrusion device comprising a housing having a chamber for containing a plastic material, a value carried by said housing and having a passage in communication with said chamber for extruding molten plastic material therefrom, said value including an element movable between a first position preventing flow of molten plastic material from said chamber through said passage and a second position permitting flow of molten plastic material from said chamber through said passage, heating means carried by said housing for heating and melting the plastic material in said chamber to generate pressure sufficient to displace the molten plastic material from said chamber through said passage when said valve element lies in said second position, said chamber being otherwise substantially hermetically sealed when the plastic material is heated and flowed through said passage, the pressure developed in the chamber by heating and melting the plastic material constitutes the sole means for displacing the molten plastic material from the chamber, and means carried by said housing for moving said valve element between said first and second positions
Claim 3
Dependent Claim
98 words
The device according to claim 1 wherein said housing includes a passage in communication with said chamber, said valve element being carried by said housing for rotation between said first and second positions and including a passage through said valve element, said moving means being operable to rotate said valve element from said first position wherein said passages are misaligned one with the other with said valve element sealing said housing passage to a second position wherein said passages lie in communication one with the other permitted flow of molten plastic material from said chamber through said valve.
Claim 4
Dependent Claim
69 words
The device according to claim 2 wherein said housing is in the general shape of a hand gun with said chamber and valve forming a part of the gun barrel, said moving means including a movable trigger, and means connecting between said trigger and said valve element to rotate said valve element between said first and second positions in response to movement of said trigger from a predetermined position.
Claim 5
Dependent Claim
29 words
The device according to claim 3 including means for automatically returning said valve element to said first position from said second position in response to release of said trigger.
Claim 6
Dependent Claim
22 words
The device according to claim 4 wherein said returning means includes a spring for biasing said valve element into said first position.
Claim 7
Dependent Claim
41 words
A device according to claim 3 wherein said valve element is carried by said housing for rotation about an axis generally parallel to longitudinaL axis of said barrel, said passage in said valve element lying offset from its axis of rotation.
Claim 8
Dependent Claim
35 words
The device according to claim 3 including heat insulating material carried by said barrel about said chamber, and removable closure means for providing access to said chamber for supplying the latter with the plastic material.
Claim 9
Dependent Claim
20 words
The device according to claim 3 including means for selectively controlling the temperature of the plastic material in the chamber.
Claim 10
Dependent Claim
12 words
The device according to claim 1 in combination with the plastic material.
Claim 11
Dependent Claim
91 words
The device according to claim 1 wherein said housing is in the general shape of a hand gun with said chamber and valve forming a part of the gun barrel, said moving means including a movable trigger, means connecting between said trigger and said valve element to move said valve element between said first and second positions in response to movement of said trigger from a predetermined position, and means for automatically returning said valve element to said first position from said second position in response to release of said trigger.
Claim 12
Dependent Claim
50 words
The device according to claim 10 wherein said heating means includes an electrical circuit, said circuit comprising a heater coil carried by said housing about said chamber, and means forming a part of said electrical circuit for selectively controlling the temperature and pressure of the plastic material in said chamber.
Claim 13
Dependent Claim
147 words
A plastic extrusion device comprising a housing having a chamber for containing a plastic material and an outlet passage in communication with said chamber for extruding the plastic material therefrom, a valve carried by said housing including an opening for access to said chamber to load it with a plastic material, a closure member carried by said housing and sealingly engageable therewith about said opening, heating means carried by said housing for heating and melting the plastic material in said chamber to generate pressure sufficient to displace the molten plastic material from said chamber through said outlet passage when said passage is open, said chamber being substantially hermetically sealed when the plastic material is heated and flowed through said outlet passage, the pressure developed in the chamber by heating and melting the plastic material constitutes the sole means for displacing the molten plastic material from said chamber.
Claim 14
Dependent Claim
147 words
A plastic extrusion device comprising a housing having a chamber for containing a plastic material and an outlet passage in communication with said chamber for extruding the plastic material therefrom, a valve carried by said housing including an opening for access to said chamber to load it with a plastic material, a closure member carried by said housing and sealingly engageable therewith about said opening, heating means carried by said housing for heating and melting the plastic material in said chamber to generate pressure sufficient to displace the molten plastic material from said chamber through said outlet passage when said passage is open, said chamber being substantially hermetically sealed when the plastic material is heated and flowed through said outlet passage, the pressure developed in the chamber by heating and melting the plastic material constitutes the sole means for displacing the molten plastic material from said chamber.
Claim 15
Dependent Claim
24 words
A plastic extrusion device according to claim 12 including means for selectively controlling the temperature and pressure of the plastic material in said chamber.
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) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |