US3596416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expandable structure
Assignee: Individual
•
Filing: 1969-06-19
•
Granted: 1971-08-03
•
Expires: 1989-06-19
Abstract
Abstract An expandable structure is disclosed herein in the form of a trailer. The trailer is provided with an extensible base frame and collapsible shells which, in addition to being vertically expandable, are extendible with the base frame. A means is provided for extending the secondary frame means along with a means for adjustably positioning a roof assembly with respect to the shells and to expand the shells.
Inventors
- 👤 Walter S Hojka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:52
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/32; B60P3/34
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
123 words
An expandable structure comprising a base frame assembly having a primary frame with secondary frame means horizontally extendible therefrom, said secondary frame means having a pair of secondary frames adjustably extendible from opposite sides of said primary base frame, vertically expandable shell enclosure means secured to said extendible secondary frame means for movement therewith from a given space to vacate and provide an upwardly enlarged space adjacent said shell means when said secondary fame is extended, said shell means comprising a pair of expandable lower shells respectively secured to said secondary frames and a pair of upper shells respectively pivotally secured to said lower shells to be pivotally vertically expandable therefrom, and a roof assembly for enclosing said space with said shell means.
Claim 2
Dependent Claim
123 words
An expandable structure comprising a base frame assembly having a primary frame with secondary frame means horizontally extendible therefrom, said secondary frame means having a pair of secondary frames adjustably extendible from opposite sides of said primary base frame, vertically expandable shell enclosure means secured to said extendible secondary frame means for movement therewith from a given space to vacate and provide an upwardly enlarged space adjacent said shell means when said secondary fame is extended, said shell means comprising a pair of expandable lower shells respectively secured to said secondary frames and a pair of upper shells respectively pivotally secured to said lower shells to be pivotally vertically expandable therefrom, and a roof assembly for enclosing said space with said shell means.
Claim 3
Dependent Claim
127 words
An expandable structure as defined in claim 1 wherein said lower shell portion has a vertical wall panel extending upwardly and longitudinally along said secondary frame means, said upper shell portion having a roof panel secured to one edge of an upper shell wall panel along a fixed dihedral and having said upper shell wall panel pivotally secured to an upper portion of said lower shell wall panel along the other edge of said upper shell wall panel whereby said upper shell portion is rigid and pivotable upwardly from a down position which encloses essentially the same space as said lower shell portion and away from said secondary frame and said lower shell portion to a vertically expanded up position to vertically expand said shell assembly frame.
Claim 4
Dependent Claim
50 words
An expandable structure as defined in claim 2 wherein a wall panel is pivotally secured to said upper shell roof panel and is pivotable downwardly therefrom and into said shell when said upper shell portion is pivoted to the up position to provide a vertical wall in said expandable shell.
Claim 5
Dependent Claim
70 words
An expandable structure as defined in claim 2 wherein a vertical wall panel is rigidly secured to said lower shell portion at a predetermined location and within said upper shell when said upper shell is in the down position, and a wall panel is pivotally secured to said upper shell roof panel and pivotable downwardly therefrom into engagement with sail Lower shell vertical wall to provide a continuous wall therewith.
Claim 6
Dependent Claim
34 words
An expandable structure as defined in claim 2 wherein said roof assembly comprises a horizontal roof panel normally supported by said shell means, and means for vertically adjustably raising and positioning said roof panel.
Claim 7
Dependent Claim
38 words
An expandable structure as defined in claim 5 wherein an inner wall panel is pivotally secured to said roof panel and is pivotable downwardly therefrom and into the vacated space to provide a vertical wall within said space.
Claim 8
Dependent Claim
31 words
An expandable structure as defined in claim 5 wherein said means for vertically adjustably positioning said roof panel comprises a jack means operatively interconnecting said primary frame and said roof panel.
Claim 9
Dependent Claim
37 words
An expandable structure as defined in claim 5 wherein link means interconnects said roof assembly and upper shell portions to pivot said upper shell portions upwardly in the expanded up position when said roof panel is raised.
Claim 10
Dependent Claim
78 words
An expandable structure as defined in claim 8 wherein said link means comprises a pulley rotatably secured to said roof panel and a cable operatively engaging said pulley and secured at one end to said primary frame and at the other end to said upper shell portion at a point away from the pivotal connection thereof with said lower shell portion whereby upward movement of said roof panel will pivot said upper shell to the expanded up position.
References Cited (Backward Citations)
US2732251A
Cited
US2561921A
Cited
US2704223A
Cited
US2842972A
Cited
GB882258A
Cited
US3352596A
Cited
US3429608A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |