Patent US4292919A successfully refreshed from Google Patents.
US4292919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-metallic paste sectors and methods of fabricating and utilizing same
Assignee: Individual
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Filing: 1979-09-24
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Granted: 1981-10-06
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Expires: 1999-09-24
Abstract
Abstract A paste sector for applying paste in a predetermined pattern to an item being manufactured, such as to the open bottom portion of a partially formed bag in a bag making machine. The paste sector is molded from a substantially resilient non-metallic material, and includes an added-thickness bottom portion adapted to be directly fitted to a paste sector shaft. The paste sector is preferably injection molded from a rubber-like urethane material, and is provided with a Teflon coating having an affinity for the low viscosity paste employed in the fabrication of paper bags.
Inventors
- 👤 Walter C. Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:13
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/60; B31B70/62; B31B2160/00; B31B2160/10; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31551; Y10T428/31573; Y10T428/3158
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
185 words
A paste sector for mounting to a paste sector shaft of a bag making machine so as to apply paste to the open bottom of a bag being manufactured, said paste sector comprising: a main body including a central non-pasting upper surface portion having a raised upper surface portion extending integrally upwardly therefrom along at least opposite end portions of said central upper surface portion for applying paste in a predetermined pattern to the open bottom of a bag being manufactured; said main body including a lower surface which is concave and is curved so as to be directly closely fitted against a curved mounting surface portion of said paste sector shaft; said main body having a generally arcuate cross-sectional configuration; said main body being substantially imperforate; said main body including integral opposite end fastening portions for mounting said paste sector to said paste sector shaft; and said main body of said paste sector, including said raised upper surface portion, said non-pasting upper surface portion and said end fastening portions being integrally injection molded from a substantially resilient non-metallic material comprising a rubber-like urethane material.
Claim 2
Dependent Claim
185 words
A paste sector for mounting to a paste sector shaft of a bag making machine so as to apply paste to the open bottom of a bag being manufactured, said paste sector comprising: a main body including a central non-pasting upper surface portion having a raised upper surface portion extending integrally upwardly therefrom along at least opposite end portions of said central upper surface portion for applying paste in a predetermined pattern to the open bottom of a bag being manufactured; said main body including a lower surface which is concave and is curved so as to be directly closely fitted against a curved mounting surface portion of said paste sector shaft; said main body having a generally arcuate cross-sectional configuration; said main body being substantially imperforate; said main body including integral opposite end fastening portions for mounting said paste sector to said paste sector shaft; and said main body of said paste sector, including said raised upper surface portion, said non-pasting upper surface portion and said end fastening portions being integrally injection molded from a substantially resilient non-metallic material comprising a rubber-like urethane material.
Claim 3
Dependent Claim
25 words
A paste sector according to claim 1, wherein: said main body of said paste sector is provided with a surface coating of "TFE" fluorocarbon (Teflon).
Claim 4
Dependent Claim
58 words
A paste sector according to claim 1, wherein: said main body includes two oppositely-disposed end surfaces; said fastening portions extend integrally outwardly from each of said end surfaces; and said main body includes an added-thickness portion integrally molded with said main body and extending along the lower portion of said main body between said opposite end surfaces thereof.
Claim 5
Dependent Claim
46 words
A paste sector according to claim 3, wherein: said added-thickness portion of said main body includes said lower concave surface of said main body which is curved so as to be directly closely fitted against a curved mounting surface portion of said shaft of said machine.
Claim 6
Dependent Claim
34 words
A paste sector according to claim 1, wherein: said raised upper surface portion of said main body comprises a corrugated upper surface for applying paste in a predetermined pattern to said item being manufactured.
Claim 7
Dependent Claim
40 words
A paste sector according to claim 1, wherein: said raised upper surface portion of said main body includes recessed portions defining a crosshatched pattern on said upper surface for applying paste in a predetermined pattern to said item being manufactured.
Claim 8
Dependent Claim
94 words
A paste sector according to claim 3, wherein: said fastening portions comprise flanges extending integrally outwardly from each of said end surfaces of said main body for engagement by a hold-down plate for mounting said paste sector to said shaft of said machine; said fastening portions are provided with recesses extending along a portion of the length thereof; and said hold-down plate includes an aperture for receiving therethrough a threaded fastener which extends through said recess of said flange fastening portion for threaded engagement in an aperture provided in said shaft of said machine.
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) | 1984-10-05 | 1985-04-06 | 1985-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-05 | 1989-04-06 | 1989-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-05 | 1993-04-06 | 1993-10-06 | $7700.00 | Window Closed / Lapsed |