Lew Sanborn and Jacques-André Istel hold the U.S.patent on the attached sleeve (see first page of patent.)
Their claim notes:
"The most important disadvantage of the prior art sleeve was its separability from the parachute. After the canopy inflated, the sleeve was carried away from the jumper by the pilot parachute. In sport jumping, this is undesirable because of the difficulty in locating the sleeve after the jump and the expense incurred in replacing lost sleeves. For military purposes, the separability of sleeve and parachute is an even more serious problem. A lost sleeve can inform the enemy that a parachutist has been landed in their territory."
The patent was filed in 1957, one of the early "products" of their then-new company, Parachutes, Inc.
HW
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Their claim notes:
"The most important disadvantage of the prior art sleeve was its separability from the parachute. After the canopy inflated, the sleeve was carried away from the jumper by the pilot parachute. In sport jumping, this is undesirable because of the difficulty in locating the sleeve after the jump and the expense incurred in replacing lost sleeves. For military purposes, the separability of sleeve and parachute is an even more serious problem. A lost sleeve can inform the enemy that a parachutist has been landed in their territory."
The patent was filed in 1957, one of the early "products" of their then-new company, Parachutes, Inc.
HW
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