US4133571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expandable camper body
Assignee: Individual
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Filing: 1977-02-07
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Granted: 1979-01-09
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Expires: 1997-02-07
Abstract
Abstract An expandable camper body having an aft section which telescopes within a forward section, folding support tracks for guiding and supporting the aft section when extended, said support tracks providing an extension of tracks within the forward section, hydraulic power for raising and lowering said support tracks and powered gear drive to extend and retract said aft section on said tracks. Flexible utility connections are provided such that all utilities are operative in the extended or retracted positions.
Inventors
- 👤 Frank T. Fillios
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:52
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/32; B60P3/34
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
273 words
An expandable camper body for mounting on a truck chassis comprising: a forward fixed section including a roof, two spaced parallel side walls, a floor and a front wall, said forward section being mounted on a truck chassis; an aft section including a roof, two spaced parallel side walls, a floor and a rear wall, said aft section being movable in and out with respect to said forward section in telescoping fashion; a support and guide mechanism to guide and support said aft section as it is extended from and retracted into said forward section; said guide and support mechanism further comprising: a pair of spaced apart, parallel longitudinal rectangular depressions forming tracks recessed in the floor of said forward section; a pair of spaced apart support and guide tracks extending rearward from said van chassis, each of said support tracks having a longitudinal rectangular depression forming a longitudinal extension of said tracks in said forward section; at least two vertical adjustable legs for each of said support and guide tracks; horizontal support braces positioned between said support and guide tracks to maintain proper track alignment; a plurality of wheels mounted on the underside of said aft section to ride in said recessed tracks in said forward section and in said support and guide tracks; drive means to move said aft section along said depressed tracks to extend and retract said aft section; said drive means further comprising: a gear rack mounted on the underside of said aft section; a spur gear mounted at the rear of said van chassis which engages said gear rack; an electrical motor to drive said spur gear.
Claim 2
Dependent Claim
273 words
An expandable camper body for mounting on a truck chassis comprising: a forward fixed section including a roof, two spaced parallel side walls, a floor and a front wall, said forward section being mounted on a truck chassis; an aft section including a roof, two spaced parallel side walls, a floor and a rear wall, said aft section being movable in and out with respect to said forward section in telescoping fashion; a support and guide mechanism to guide and support said aft section as it is extended from and retracted into said forward section; said guide and support mechanism further comprising: a pair of spaced apart, parallel longitudinal rectangular depressions forming tracks recessed in the floor of said forward section; a pair of spaced apart support and guide tracks extending rearward from said van chassis, each of said support tracks having a longitudinal rectangular depression forming a longitudinal extension of said tracks in said forward section; at least two vertical adjustable legs for each of said support and guide tracks; horizontal support braces positioned between said support and guide tracks to maintain proper track alignment; a plurality of wheels mounted on the underside of said aft section to ride in said recessed tracks in said forward section and in said support and guide tracks; drive means to move said aft section along said depressed tracks to extend and retract said aft section; said drive means further comprising: a gear rack mounted on the underside of said aft section; a spur gear mounted at the rear of said van chassis which engages said gear rack; an electrical motor to drive said spur gear.
Claim 3
Dependent Claim
156 words
The expandable camper body of claim 1 wherein each of said support and guide tracks further comprises: two equal sections, the front end of said first section being hinged to the chassis of said van so that it may bold upwards against the rear wall of said aft section it its retracted position; said two sections being hinged together at the middle of said support track such that said second section folds downward against said first section when said first section is raised; a first vertical support leg positioned under said middle hinge and having two diagonal braces one extending to each of said sections; said first vertical support leg pivotally mounted such that it can fold under said first section, and having an opening therein such that said diagonal braces may be folded thereinto; a second vertical leg pivotally mounted to rear of said second section such that it can fold under said second section.
Claim 4
Dependent Claim
80 words
The expandable camper body of claim 2 further including: a first dual action hydraulic cylinder to raise and lower said said first support track section mounted at the rear of said van chassis; a second dual action hydraulic cylinder to fold and unfold said first and second support track sections, by raising and positioning said diagonal braced, mounted at the base of said first vertical leg; a third dual action hydraulic cylinder to raise and lower said second vertical leg.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-08 | 1982-07-10 | 1983-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-08 | 1986-07-10 | 1987-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-08 | 1990-07-10 | 1991-01-09 | $7700.00 | Window Closed / Lapsed |