KEY WALLET BUTTERFLY TYPE
First Claim
1. Wallet, having four wallet boundary edges, comprising two shell elements which are associated by connection means at a spine of the wallet in such a manner that they can pivot relative to one another around a pivot axis at the spine such that a first longitudinal boundary edge of the one shell element, can move away from the corresponding first longitudinal boundary edge of the other shell element to move between an open and a closed position of the wallet by mutually pivoting of the shell elements, wherein a pre tensioned membrane material extends from the one shell element via the spine to the other shell element and biases the shell elements to pivot in the direction from the closed to the open position of the wallet, both if the wallet is in the open and closed position, and each shell element provides a main face of the wallet and further pivoting, due to the bias of the pre tensioned membrane material, of the shell elements in the direction from the closed to the open position of the wallet, beyond the open position of the wallet is blocked by a stop means of the wallet.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed is a wallet comprising two shell halves which are associated by a rigid spine to open and close the wallet, and containing a bunch of keys, anchored to the wallet. The wallet is biased to the open position by a pre tensioned skin which covers windows in the two shell halves. The skin allows temporary outward bulging by elasticity, and immediately springs back into the initial unloaded state at the time the bulging load is removed.
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Citations
20 Claims
- 1. Wallet, having four wallet boundary edges, comprising two shell elements which are associated by connection means at a spine of the wallet in such a manner that they can pivot relative to one another around a pivot axis at the spine such that a first longitudinal boundary edge of the one shell element, can move away from the corresponding first longitudinal boundary edge of the other shell element to move between an open and a closed position of the wallet by mutually pivoting of the shell elements, wherein a pre tensioned membrane material extends from the one shell element via the spine to the other shell element and biases the shell elements to pivot in the direction from the closed to the open position of the wallet, both if the wallet is in the open and closed position, and each shell element provides a main face of the wallet and further pivoting, due to the bias of the pre tensioned membrane material, of the shell elements in the direction from the closed to the open position of the wallet, beyond the open position of the wallet is blocked by a stop means of the wallet.
- 19. Wallet, having four wallet boundary edges, which wallet is provided by two opposite main faces, two opposite long minor faces and two opposite short minor faces, wherein the long and short minor faces provide the wallet thickness and a long minor face meets a short minor face at an angle of 90 degrees, the wallet further comprising two shell elements which are associated by connection means at a spine of the wallet in such a manner that they can pivot relative to one another around a pivot axis at the spine such that a first longitudinal boundary edge of the one shell element, can move away from the corresponding first longitudinal boundary edge of the other shell element to move between an open and a closed position of the wallet by mutually pivoting of the shell elements, wherein a pre tensioned membrane material, providing an enveloping skin as external surface of the wallet, extends from the one shell element via the spine to the other shell element and biases the shell elements to pivot in the direction from the closed to the open position of the wallet, both if the wallet is open and closed, and each shell element provides a main face of the wallet, wherein the membrane material allows an elastic yield of at least 20%, in the closed position the wallet provides an elongated sleeve like shape, in the completely open position of the wallet the shell elements make a mutual angle of at least 45 degrees and less than 120 degrees, the shell elements are merely connected to each other along a second longitudinal boundary edge, also providing a hinged connection providing a rigid spine, the wallet contains a bunch of metal house door keys, which bunch is anchored to the wallet by retaining means, which retaining means can move between a retracted position, in which the retaining means and the bunch of keys are completely within the wallet, and an extended position, in which part of the retaining means and the complete bunch of keys project outside the wallet, the membrane material provides an elastically resilient foil covering both shell elements and extending from the one shell element to the other shell element via the spine and being pre tensioned by at least 5% yield both in the closed and open position of the wallet such that both in the open and closed position of the wallet the pre tensioned membrane material biases the shell elements in the direction of moving from the closed to the open position of the wallet, each shell element comprises a rigid space frame of rectangular shape in the shape of a cadre which provides the boundary edges of the shell element and also provides the external boundaries of an opening of said shell element which opening is covered by said membrane material such that the wallet has rigid wallet boundary edges and has main faces that, at the area within the opening, can be outwardly bulged by bulky contents within the closed wallet by elastic yield of the membrane material, and which opening makes at least 50% of the surface area of the shell element, the wallet is provided with a mechanical stop associated with the spine to limit the opening angle of the shell elements to less than 120 degrees, against the bias of the foil, the wallet has a length, measured parallel to the first and second longitudinal boundary edge, between 80 and 120 millimeter, a width, measured perpendicular to the first and second longitudinal boundary edge, between 30 and 60 millimeter and a thickness between 5 and 30 millimeter, the pre tension of the foil increases at least 2.5% while moving from the opened to the closed position of the wallet and the foil is easy elastically pleatable and foldable and provides flat main faces of the wallet in its open and closed position in the area where the foil covers the opening, the wallet is designed such that, in the closed position of the wallet, both long minor faces are tight such that they do not allow a key to pass while a short minor face delimits an opening of at least 2 millimeter for a key to pass, and the wallet is provided with a releasable lock to keep the wallet in the closed position by locking the shell elements to each other against the bias of the membrane material and is provided with releasing means for unlocking the lock to release the shell elements.
Specification