Zipper for heavy loads
AssigneeTerry G. Spragg
InventorGianfranco Germani
Life of this patent
Estimating the term…
Abstract
A zipper has its teeth formed by two interfitting plastic tooth elements one of which has pointed prongs fitting into matching holes in the other tooth element and extending through a fabric mounting strip having a bead clamped between the tooth elements of each zipper tooth. The tooth elements also interfit outwardly of the mounting strip by way of a land and matching recess, and an additional prong and matching hole. The interfitting tooth elements are welded together at the interfit of the prongs and of the land. The zipper is locked in closed position at each end by a locking unit which has a latch with locking pawls which fit between adjoining zipper teeth when the latch is swung into locking position after sliding the locking unit onto an end portion of the zipper.
Claims20
A zipper tooth comprising:
- two complementing tooth pieces each having a head end, a foot end, a back side and lateral sides, said tooth pieces being positioned in back-to-back relation,
- said tooth pieces each having a head portion, a body portion, and neck portion between and laterally narrower than said head and body portions,
- said tooth pieces interfitting at their head portions and at their body portions, and their body portions jointly providing a laterally extending passage therebetween adjacent said neck portions,
- the back sides of said head portions being in engagement with one another and
- there being a gap between the back sides of said body portions extending from said passage to the foot end of the body portions except where the body portions interfit.
A zipper assembly comprising:
- a flexible mounting strip having a bead along a longitudinal edge thereof;
- two interfitting parts, each with a head portion, a body portion, and a neck portion located between said head and body portions,
- a passage jointly provided by said body portions receiving said bead with said mounting strip extending by its width between said body portions, and
- a prong extending from one of said body portions into the other body portion and passing through said mounting strip, said prong being shaped so as to pass through said mounting strip when said parts are fitted together from opposite sides of the mounting strip.
Dependencies are inferred from the claim text.