Patent US2244894A successfully refreshed from Google Patents.
Patent US4023589A successfully refreshed from Google Patents.
US4023589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubular joint and the product formed thereby
Assignee: Flexible Technologies Inc
•
Filing: 1974-10-15
•
Granted: 1977-05-17
•
Expires: 1994-10-15
Abstract
Abstract A method is described for joining the opposite edge portions of a sheet of flexible material to form a durably-joined elongated tubular member. The material is shaped or folded to provide opposite edge flaps, spaced and extending outwardly from the tubular member formed. A strip of connector tape, folded lengthwise to form a pair of leg flaps, is interposed between the edge flaps with its legs confronting and extending oppositely thereto. Each leg flap is bonded to its corresponding adjacent edge flaps, whereby the tape serves to connect the edge flaps and form a longitudinal joint within the elongated tubular member. The tubular member so produced may include an insulating layer and a flexible skeletal structure therewithin.
Inventors
- 👤 William E. Rejeski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:38
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/48; B29C65/50; B29C65/5042; B29C53/00; B29C53/36; B29C53/38; B29C53/48; B29C63/00; B29C63/02; B29C63/04; B29C63/06; B29C63/065; B29C65/5007; B29C65/5028; B29C65/5064; B29C65/5071; B29C65/5092; B29C65/78; B29C65/7858; B29C65/7888; B29C65/7894; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/114; B29C66/1142; B29C66/13; B29C66/133; B29C66/40; B29C66/41; B29C66/43; B29C66/432; B29C66/4322; B29C66/80; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/83413; F; F16; F16L; F16L59/00; F16L59/14; F16L59/147; F16L59/153; B29C2793/00; B29C2793/009; B29C65/4805; B29C65/481; B29C65/4815; B29C66/70; B29C66/71; B29L; B29L2023/00; B29L2023/22; B29L2023/225; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1008; Y10T156/1013; Y10T156/1036; Y10T156/1038
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
146 words
An elongated flexible tubular member of indeterminate length comprising a flexible sheet of material curved to close on itself to provide a tubular member with opposite edges having longitudinally extending radially outwardly projecting interior surfaces in adjacent relation, an elongated tape folded lengthwise to provide a fold having a bend directed away from the center of the tubular member and free edges directed toward its center, the tape having exterior surfaces respectively confronting said interior surfaces of the tubular member, and means to adhere said interior surfaces of the tubular member with confronting exterior surfaces of the tape to form a tubular member having a taped joint without the interior surfaces of the tape adhering to itself such that when tension is applied across the taped joint the tape will unfold and lie substantially flat inside the tubular member with its opposite edges overlapping the tape.
Claim 2
Dependent Claim
146 words
An elongated flexible tubular member of indeterminate length comprising a flexible sheet of material curved to close on itself to provide a tubular member with opposite edges having longitudinally extending radially outwardly projecting interior surfaces in adjacent relation, an elongated tape folded lengthwise to provide a fold having a bend directed away from the center of the tubular member and free edges directed toward its center, the tape having exterior surfaces respectively confronting said interior surfaces of the tubular member, and means to adhere said interior surfaces of the tubular member with confronting exterior surfaces of the tape to form a tubular member having a taped joint without the interior surfaces of the tape adhering to itself such that when tension is applied across the taped joint the tape will unfold and lie substantially flat inside the tubular member with its opposite edges overlapping the tape.
Claim 3
Dependent Claim
18 words
The tubular member of claim 1 wherein the tape comprises a continuous strip of flexible woven fiber glass.
Claim 4
Dependent Claim
51 words
The tubular member of clim 1 further including a resilient tubular inner content of diametrically compressible and expandable material, the tubular inner content being received within and releasably compressed by the flexible curved sheet during affixation of the tape to the sheet and expanded upon release to tension said taped joint.
Claim 5
Dependent Claim
51 words
The tubular member of clim 1 further including a resilient tubular inner content of diametrically compressible and expandable material, the tubular inner content being received within and releasably compressed by the flexible curved sheet during affixation of the tape to the sheet and expanded upon release to tension said taped joint.
References Cited (Backward Citations)
US652975A
Cited
US1907307A
Cited
US2302563A
Cited
US2394818A
Cited
US2380427A
Cited
US2625263A
Cited
US2801648A
Cited
US2990309A
Cited
US3066063A
Cited
US3070274A
Cited
US3877491A
Cited
US3763895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-16 | 1980-11-15 | 1981-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-16 | 1984-11-15 | 1985-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-16 | 1988-11-15 | 1989-05-17 | $7700.00 | Window Closed / Lapsed |