US4415513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a composite foam tape transport capstan
Assignee: Telex Computer Products Inc
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Filing: 1981-01-15
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Granted: 1983-11-15
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Expires: 2001-01-15
Abstract
Abstract A capstan for use on a tape transport, including a hub, a tubular outer rim supported co-axially about the hub, and a body portion of foam plastic between the hub and rim.
Inventors
- 👤 Ivo T. Plachy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:22
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/1228; B29C44/1242; G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/28; B29C33/00; B29C33/10; B29L; B29L2031/00; B29L2031/32; Y; Y10; Y10S; Y10S425/00; Y10S425/812
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
167 words
A method of manufacturing a tape transport capstan comprising: positioning a tubular outer rim in a cylindrical cavity mold, the internal diameter of the mold being equal the exterior diameter of the rim, the mold having an end surface perpendicular the cavity axis and having a cylindrical shaft extending from the end surface axially of the mold cavity; inserting a hub having an axial opening therein onto said shaft and within the mold cavity, the hub having an internal radially extending non-circular portion, such portion being spaced intermediate the hub ends and extending towards said tubular outer rim; closing the mold cavity with an end cap providing a second end surface parallel to and spaced from the mold cavity end surface; filling the mold cavity having the rim and hub therein with foam plastic material; allowing the foam plastic material within the mold to solidify; and removing the contents of the mold in which the hub, rim, and solidified foam plastic are bound into a unitary device.
Claim 2
Independent Claim
167 words
A method of manufacturing a tape transport capstan comprising: positioning a tubular outer rim in a cylindrical cavity mold, the internal diameter of the mold being equal the exterior diameter of the rim, the mold having an end surface perpendicular the cavity axis and having a cylindrical shaft extending from the end surface axially of the mold cavity; inserting a hub having an axial opening therein onto said shaft and within the mold cavity, the hub having an internal radially extending non-circular portion, such portion being spaced intermediate the hub ends and extending towards said tubular outer rim; closing the mold cavity with an end cap providing a second end surface parallel to and spaced from the mold cavity end surface; filling the mold cavity having the rim and hub therein with foam plastic material; allowing the foam plastic material within the mold to solidify; and removing the contents of the mold in which the hub, rim, and solidified foam plastic are bound into a unitary device.
Claim 3
Independent Claim
178 words
A method of manufacturing a tape transport capstan comprising: positioning a tubular outer rim in a cylindrical cavity mold, the internal diameter of the mold being equal the exterior diameter of the rim, the mold having an end surface perpendicular the cavity axis and having a cylindrical shaft extending from the end surface axially of the mold cavity; inserting a hub having an axial opening therein onto said shaft and within the mold cavity, the hub having an internal radially extending non-circular portion, such portion being spaced intermediate the hub ends and extending towards said tubular outer rim; filling the mold cavity having the rim and hub therein with expandable polystyrene particles; closing the mold cavity with an end cap providing a second end surface parallel to and spaced from the mold cavity end surface; introducing a heating fluid into the mold cavity to expand and coalesce the polystyrene particles; cooling the contents of the mold; and removing the contents of the mold in which the hub, rim and coalesced polystyrene particles are bound into a unitary device.
Claim 4
Independent Claim
178 words
A method of manufacturing a tape transport capstan comprising: positioning a tubular outer rim in a cylindrical cavity mold, the internal diameter of the mold being equal the exterior diameter of the rim, the mold having an end surface perpendicular the cavity axis and having a cylindrical shaft extending from the end surface axially of the mold cavity; inserting a hub having an axial opening therein onto said shaft and within the mold cavity, the hub having an internal radially extending non-circular portion, such portion being spaced intermediate the hub ends and extending towards said tubular outer rim; filling the mold cavity having the rim and hub therein with expandable polystyrene particles; closing the mold cavity with an end cap providing a second end surface parallel to and spaced from the mold cavity end surface; introducing a heating fluid into the mold cavity to expand and coalesce the polystyrene particles; cooling the contents of the mold; and removing the contents of the mold in which the hub, rim and coalesced polystyrene particles are bound into a unitary device.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-14 | 1987-05-16 | 1987-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-14 | 1991-05-16 | 1991-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-14 | 1995-05-16 | 1995-11-15 | $7700.00 | Window Closed / Lapsed |