Patent US5634113A successfully refreshed from Google Patents.
Patent US3787910A successfully refreshed from Google Patents.
US3787910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amphibious vehicle
Assignee: Design Dimension Inc
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Filing: 1972-05-18
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Granted: 1974-01-29
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Expires: 1992-05-18
Abstract
Abstract In abstract, a preferred embodiment of this invention is a towable, land type vehicle which is launchable and expansible for use as a stable watercraft with roomy, trailer-like accommodations. Basically the body of the vehicle comprises a central section having expandable wing sections disposed on each side thereof. Each wing section has a retractable wheel assembly incorporated therein. A retractable tow bar is provided about the front of the body which enables the tow bar to be moved inwardly relative to the body when the amphibious vehicle is used as a watercraft.
Inventors
- 👤 J Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:56
CPC Classifications
B; B63; B63C; B63C13/00; B60; B60F; B60F3/00; B60F3/0061; B60F3/0092
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
149 words
An amphibious type unit comprising: a generally elongated central section having outwardly extending sides with the outer lower edge extremities of said sides formed into a generally hooked shaped longitudinal groove; a pair of wing sections hingedly attached on opposite sides of said central section with each wing section having a V-bottom boat shape when in a hingedly extending pOsition relative to said central section, each wing section having generally hooked shaped groove formed about the inner side thereof and spaced so as to engage and mate with the respective groove formed in the outwardly extending sides of said central section when the respective wing section is hingedly extended thereby effectively limiting the outward movement of the wing section and generally forming a continuous structure between said central section and a respective wing section; and means for hingedly extending and retracting said wing sections relative to said central section.
Claim 2
Dependent Claim
149 words
An amphibious type unit comprising: a generally elongated central section having outwardly extending sides with the outer lower edge extremities of said sides formed into a generally hooked shaped longitudinal groove; a pair of wing sections hingedly attached on opposite sides of said central section with each wing section having a V-bottom boat shape when in a hingedly extending pOsition relative to said central section, each wing section having generally hooked shaped groove formed about the inner side thereof and spaced so as to engage and mate with the respective groove formed in the outwardly extending sides of said central section when the respective wing section is hingedly extended thereby effectively limiting the outward movement of the wing section and generally forming a continuous structure between said central section and a respective wing section; and means for hingedly extending and retracting said wing sections relative to said central section.
Claim 3
Dependent Claim
95 words
The amphibious type unit of claim 1 wherein said means for hingedly extending and retracting said wing sections comprises: threaded helical shaft means; follower means threaded on said helical shaft means and axially movable thereon in response to the rotation of said threaded shaft; push arm means interconnected between said follower means and a respective wing section; and means for rotating said threaded helical shaft means so as to axially move said follower means thereby resulting in said wing sections being expanded or retracted depending on the direction of rotation of said helical shaft means.
Claim 4
Dependent Claim
46 words
The amphibious type unit of claim 2 wherein said helical shaft means comprises a pair of generally upright laterally spaced helical screw shafts and wherein said means for rotating said helical shaft means comprises a handcrank extending between said screw shafts and operatively connected to each.
Claim 5
Dependent Claim
23 words
The amphibious type unit of claim 3 wherein a water tight gasket seal is secured within said groove formed within each wing section.
Claim 6
Dependent Claim
33 words
The unit of claim 4 including tow bar means retractingly attached to the central section of said unit for connecting the same to a self-propelled vehicle whereby a trailer type unit is provided.
Claim 7
Dependent Claim
19 words
The unit of claim 5 including at least one retractable wheel rotatively attached to each of said wing sections.
Claim 8
Dependent Claim
28 words
The unit of claim 6, therein locking means are provided for each of said retractable wheels whereby the same may be locked in either retracted or extended positions.
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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |