US3632273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for producing simulated bamboo
Assignee: Individual
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Filing: 1970-06-19
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Granted: 1972-01-04
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Expires: 1990-06-19
Abstract
Abstract A machine for converting plain plastic tubing such as polyvinyl chloride tubing and the like into simulated bamboo for use in the manufacture of furniture, etc. by forming on the plain plastic tubing a plurality of spaced peripheral ridges along the full length of the tubing. The machine supports a length of the tubing by means of pairs of rollers and heats the tubing between the rollers at the positions ridges are to be formed as the tube is rotated. The pairs of rollers are mounted so that one roller may slide a short distance in the direction of the other roller whereby upon heating the tubing and sliding one roller in each pair in the direction of the other rollers simultaneously with forcing the axial movement of the plastic tubing, peripheral or circumferential ridges will be formed on the plain plastic tubing. The tubing is then cooled off to cause the ridges to become set.
Inventors
- 👤 Anthony P Savickas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:03
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/22; B29C53/30
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
105 words
A machine for converting the plain thermoplastic tubing into simulated bamboo having a longitudinal axis comprising a support, means mounted on said support for receiving a length of said tubing, rotatable means mounted on said support engaging the ends of said tubing, power-operated means rotating said rotatable means for rotating said tubing, heating means mounted in proximity of said tubing, and sliding means engaging one end of said tubing receiving means and said rotatable means and poweroperated means applying a force on said sliding means in the direction of said other end whereby ridges are formed at said heated portions of tubing to simulate bamboo.
Claim 2
Dependent Claim
105 words
A machine for converting the plain thermoplastic tubing into simulated bamboo having a longitudinal axis comprising a support, means mounted on said support for receiving a length of said tubing, rotatable means mounted on said support engaging the ends of said tubing, power-operated means rotating said rotatable means for rotating said tubing, heating means mounted in proximity of said tubing, and sliding means engaging one end of said tubing receiving means and said rotatable means and poweroperated means applying a force on said sliding means in the direction of said other end whereby ridges are formed at said heated portions of tubing to simulate bamboo.
Claim 3
Dependent Claim
57 words
The structure as recited by claim 1 wherein said tubing engaging and rotatable means comprise a plurality of shafts, extending iN substantially parallel relation, a plurality of sleeves mounted on said shafts, said sleeves terminating in spaced relation to each other to form a gap, and roller means mounted substantially concentrically on said sleeves adjacent said gaps.
Claim 4
Dependent Claim
59 words
The structure as recited by claim 2 wherein a pair of said shafts lie substantially in a horizontal plane and a third shaft lying in a plane above said pair of shafts for engaging said tubing and said roller means of one of said shafts lying substantially in alignment with said roller means on said other of said shafts.
Claim 5
Dependent Claim
38 words
The structure as recited by claim 3 wherein said sliding means comprise end plate means having a plurality of slots receiving end portions of said shafts, said tubing engaging rotatable means being mounted on said end plate means.
Claim 6
Dependent Claim
29 words
The structure as recited by claim 4 and fluid means connected at either end of said tubing engaging and rotatable means for cooling said heated portions of said tubing.
Claim 7
Dependent Claim
46 words
The structure as recited by claim 3 and adjustable means mounting said pair of shafts substantially equidistant from said longitudinal axis for receiving tubing of different diameters and means pivotally mounting said third shaft whereby said roller means of said third shaft lie on said tubing.
Claim 8
Dependent Claim
70 words
The structure as recited by claim 6 wherein said adjustable means comprises a threaded shaft having reverse threads extending from a center portion and follower engaging each of said reverse threads supporting said shafts lying in a horizontal plane whereby upon rotation of said threaded shaft said rollers mounted on said last-named shafts move equal distances from said center portion in a horizontal plane for receiving tubing of varying diameters.
Claim 9
Dependent Claim
23 words
The structure as recited by claim 7 and pivot means mounting said heating means for swinging said heating means away from said tubing.
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) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |