This invention is related to a convertible backpack capable of being converted from a regular backpack into a trolley case and vice versa according to a user preference. The convertible backpack of the invention comprises at least a rotatable wheels cover mechanism, for covering the outer side of ea
This invention is related to a convertible backpack capable of being converted from a regular backpack into a trolley case and vice versa according to a user preference. The convertible backpack of the invention comprises at least a rotatable wheels cover mechanism, for covering the outer side of each one of the wheels upon usage of the convertible backpack as a backpack and for uncovering the outer side of each one of the wheels upon usage of the convertible backpack as a trolley case.
대표청구항▼
1. A convertible backpack configured be converted from a backpack position into a trolley case, and vice versa according to a user preference, said convertible backpack comprising at least: a. a trolley base configured to hold a backpack and to be connected to a handle and to at least two wheels for
1. A convertible backpack configured be converted from a backpack position into a trolley case, and vice versa according to a user preference, said convertible backpack comprising at least: a. a trolley base configured to hold a backpack and to be connected to a handle and to at least two wheels for rolling the trolley case on the ground;b. a telescopic trolley handle configured to be extracted upward upon usage of the convertible backpack as a trolley case, and to be retracted inward upon usage as a backpack;c. at least two wheels configured to allow rolling of the trolley case on the ground;d. a backpack body configured to be assembled with said trolley base and said telescopic trolley handle; ande. a rotatable wheels cover mechanism for covering the outer side of each one of said wheels upon usage of said convertible backpack as a backpack and for uncovering the outer side of each one of said wheels upon usage of said convertible backpack as a trolley case. 2. A convertible backpack according to claim 1, wherein said rotatable wheels cover mechanism is operated by movement of said telescopic trolley handle upward and downward such that upon extraction of said telescopic trolley handle upward, each of said wheel covers rotates inward so as to uncover the outer side of said wheels, and upon insertion of said telescopic trolley handle downward, each of said wheel covers rotates outward so as to cover the outer side of said wheels. 3. A convertible backpack according to claim 1, wherein said rotatable wheels cover mechanism comprises at least: a. a crankshaft top pressure slider positioned at the lowest part of said telescopic trolley handle;b. a crank;c. a wheel shaft for connecting said wheels of said convertible backpack; andd. at least two retraction springs mounted on said wheel shaft;wherein, upon insertion of said telescopic trolley handle downward, each of said wheel covers is rotated by said wheel shaft outward by pressure produced by said crankshaft top pressure slider on said crank so as to cover said outer sides of the wheels, and upon extraction of said telescopic trolley handle upward, said crankshaft top pressure slider is pulled up, releasing the pressure on said crank, thereby allowing the wheel shaft to rotate inward with the aid of the force applied by said at least two retraction springs together with said wheel covers so as to uncover the outer sides of said wheels. 4. A convertible backpack according to claim 1, further comprising shoulder straps and a shoulder straps retraction mechanism, wherein upon extraction of the telescopic trolley handle upward for usage of said convertible backpack as a trolley case, said shoulder straps retraction mechanism is configured to pull the shoulder straps upward along said telescopic trolley handle, for elevating said shoulder straps away from the ground, and further to bring said shoulder straps back to their initial position, upon retraction of said telescopic trolley handle inward to a backpack position. 5. A rotatable wheel cover mechanism for a convertible backpack that can be converted from a backpack into a trolley case, and vice versa, according to a user's preference comprises at least: a. a crankshaft top pressure slider positioned at the lowest part of a telescopic trolley handle;b. a crank;c. a wheel shaft for connecting the wheels of said convertible backpack;d. wheel covers for covering the wheels of said convertible backpack, ande. at least two retraction springs mounted on said wheel shaft;wherein, upon usage of said convertible backpack as a backpack and insertion of said telescopic trolley handle downward, each of said wheels covers is rotated by said wheel shaft outward by pressure produced by said crankshaft top pressure slider on said crank, so as to cover the outer sides of said wheels, and upon extraction of said telescopic trolley handle upward to use said convertible backpack as a trolley case, said crankshaft top pressure slider is pulled up, and the pressure on said crank is released, allowing said wheel shaft, with the aid of the force applied by said at least two retraction springs, to rotate inward, together with said wheels covers, so as to uncover the outer sides of said wheels.
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이 특허에 인용된 특허 (10)
Russo,Steve; Chi,Tung Cheng, Backpack with removable handle and wheel assembly.
Nykoluk, Cory O.; Nordstrom, Mark B.; O'Shea, Jr., James Edward, Method of and device for extending and retracting the wheels of a piece of towable baggage.
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