Patent US4351688A successfully refreshed from Google Patents.
US4351688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite tape laying machine
Assignee: Lockheed Martin Corp
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Filing: 1981-05-20
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Granted: 1982-09-28
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Expires: 2001-05-20
Abstract
Abstract An apparatus for severing and laying composite tape to form structural members with a shearing and compacting mechanism capable of a large variety of angular or circular severances. The severances are formed incrementally or digitally with a number of lengthwise slits of selected length. A plurality of transverse cuts are formed in the tape to intersect the slits to form a stairstepped severance. A curved chute at the discharge end of the apparatus has an endless belt to maintain the tape in alignment as it is pressed onto the work surface. The tape is compacted onto the work surface by a segmented roller system composed of several individual rollers. As the severance is reached, the rollers are selectively and individually disengaged from the work surface to correlate compaction termination with the shape of the severance.
Inventors
- 👤 Olin E. Weiss
- 👤 Grant L. Davis
- 👤 James L. Hudson
- 👤 Harlan T. Dowell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:46
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/30; B29C70/38; B29C70/386; B29C70/388; B26; B26D; B26D11/00; B26D5/00; B26D5/02; B26D5/04; B29C70/54; B29C70/545; B29C2793/00; B29C2793/0027; Y; Y10; Y10T; Y10T156/00; Y10T156/12; Y10T156/1348
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
140 words
In an apparatus for laying composite tape in parallel rows to form a structural member, the apparatus being of the type having a table, a tape laying head supported adjacent the table, drive means for providing relative movement between the head and the table, and a tape supply carried by the head, having a free end adapted to pass in a feed path in the head and out onto a work surface on the table, the improvement comprising: a chute mounted to the head at the discharge end of the feed path for guiding the tape, the chute being curved to change the direction of travel of the tape; and an endless belt mounted adjacent the chute in a curved configuration around the curved portion of the chute, the tape adapted to be carried between the chute and the belt.
Claim 2
Dependent Claim
140 words
In an apparatus for laying composite tape in parallel rows to form a structural member, the apparatus being of the type having a table, a tape laying head supported adjacent the table, drive means for providing relative movement between the head and the table, and a tape supply carried by the head, having a free end adapted to pass in a feed path in the head and out onto a work surface on the table, the improvement comprising: a chute mounted to the head at the discharge end of the feed path for guiding the tape, the chute being curved to change the direction of travel of the tape; and an endless belt mounted adjacent the chute in a curved configuration around the curved portion of the chute, the tape adapted to be carried between the chute and the belt.
Claim 3
Dependent Claim
143 words
In an apparatus for laying composite tape in parallel rows to form a structural member, the apparatus having a table, a tape laying head supported adjacent the table, drive means for providing relative movement between the head and the table, a tape supply carried by the head with a free end adapted to pass through a feed path in the head and out a discharge end onto a work surface on the table, and transverse cutter means for making a severance in the tape, the improvement comprising: a plurality of rollers carried by the head at the discharge end in a transverse row for pressing the tape onto the work surface; and roller actuating means for moving the rollers into and from pressing engagement during said relative movement and for retracting the rollers individually from pressing engagement once a roller approaches the severance.
Claim 4
Dependent Claim
143 words
In an apparatus for laying composite tape in parallel rows to form a structural member, the apparatus having a table, a tape laying head supported adjacent the table, drive means for providing relative movement between the head and the table, a tape supply carried by the head with a free end adapted to pass through a feed path in the head and out a discharge end onto a work surface on the table, and transverse cutter means for making a severance in the tape, the improvement comprising: a plurality of rollers carried by the head at the discharge end in a transverse row for pressing the tape onto the work surface; and roller actuating means for moving the rollers into and from pressing engagement during said relative movement and for retracting the rollers individually from pressing engagement once a roller approaches the severance.
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) | 1985-09-27 | 1986-03-29 | 1986-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-27 | 1990-03-29 | 1990-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-27 | 1994-03-29 | 1994-09-28 | $7700.00 | Window Closed / Lapsed |