Aeronautics and astronautics – Safety lowering devices – Parachutes
Patent
1991-09-09
1992-06-23
Peters, Jr., Joseph F.
Aeronautics and astronautics
Safety lowering devices
Parachutes
112417, B64D 1710
Patent
active
051236168
ABSTRACT:
A parachute canopy seam joint for fastening a ribbon seam and a radial seam of a parachute canopy together. This parachute canopy seam joint combines a ribbon seam using a zigzag stitch pattern and narrow strips of radial tape sewn together with multiple rows of a straight stitch pattern. The ribbon seam attaches two overlapping ribbons within the parachute. The narrow strips of radial tape shroud the ribbon seam which result in a high strength and low weight and volume radial seam and seam joint. This new configuration of a parachute seam joint has distinct advantages in terms of strength and shock absorbing capacity. Specifically, this new parachute seam joint has a seam strength equal to or greater than the minimum rated strength of the adjoining materials and employs a smaller weight and volume of material than conventional radial seams and seam joints.
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Dan Poynter, The Parachute Manual, 1984 pp. 474, 481-483.
Federal Standard (FED.STD) No. 751a, Jan. 25, 1965 Parts I and II.
E. G. Ewing, H. W. Bixby, T. W. Knacke, Recovery System Design Guide, Dec. 978 pp. 95-96, 181-186.
Buckley James A.
Hennings Elsa J.
Forrest, Jr. John L.
Mattix Carla
Peters Jr. Joseph F.
Sliwka Melvin J.
The United States of America as represented by the Secretary of
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