Patent US4755491A successfully refreshed from Google Patents.
Patent US4733905A successfully refreshed from Google Patents.
US4733905A
Expired / Lapsed
US
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Combination chair and cart
Assignee: Individual
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Filing: 1987-04-20
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Granted: 1988-03-29
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Expires: 2007-04-20
Abstract
Abstract A two-wheeled vehicle which can be collapsed into a fully compact, retracted condition or expanded into any one of a number of different forms including the form of a cart, a chair or seat and a two-wheeled carrier for an elongated object, such as a two-wheeled carrier for an elongated object, such as a surfboard. The vehicle has an axle provided with a pair of wheels at the opposed ends thereof. First and second U-shaped elements are pivotally connected to the shaft near respective wheels. A flexible sheet is mounted on and extends between the crosspieces of the first and second elements. Third and fourth U-shaped elements are pivotally coupled intermediate their ends on respective first and second elements, and the positions of these third and fourth elements determine the form in which the unit is to assume. A locking bar near each mounting plate frictionally engages the fourth element to releasably lock the latter in its operative position so that the fourth element forms the handle of a cart. Adjustments of the third and fourth elements from the cart locations thereof permits the unit of the present invention to be converted from the cart to a chair and from the chair to a two-wheeled carrier.
Inventors
- 👤 Kenneth N. Buickerood
- 👤 Edgar J. Garroni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:13
CPC Classifications
B; B62; B62B; B62B1/00; B62B1/02; B62B1/04; A; A47; A47C; A47C13/00; B62B1/10; B62B1/12; B62B2205/00; B62B2205/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
237 words
A combination chair and cart unit comprising: a shaft having ground engaging wheels mounted thereon at the ends thereof; first and second U-shaped elements each having a pair of generally rigid sides and a crosspiece interconnecting first ends of the sides, the second ends of the sides being rotatably mounted on the shaft; a flexible sheet secured at the ends thereof to and extending between the crosspieces of the first and second elements and passing partially about the shaft, said sheet having a pair of parts normally extending outwardly from said shaft and being in operative position angularly disposed relative to each other; third and fourth U-shaped elements, each of the third and forth elements including a pair of generally rigid sides and a crosspiece at first ends of the sides; means pivotally connecting the sides of the third element with respective sides of the first element; means pivotally connecting the sides of the fourth element with respective sides of the second element, said fourth element being movable from a first location extending upwardly and away from the second element to a second location extending downwardly and along the third element when the third element is in a position extending forwardly and downwardly from the first element; and means coupling the adjacent ends of the third element with the ends of the fourth element when said fourth element is in the first and second operative locations thereof.
Claim 2
Dependent Claim
237 words
A combination chair and cart unit comprising: a shaft having ground engaging wheels mounted thereon at the ends thereof; first and second U-shaped elements each having a pair of generally rigid sides and a crosspiece interconnecting first ends of the sides, the second ends of the sides being rotatably mounted on the shaft; a flexible sheet secured at the ends thereof to and extending between the crosspieces of the first and second elements and passing partially about the shaft, said sheet having a pair of parts normally extending outwardly from said shaft and being in operative position angularly disposed relative to each other; third and fourth U-shaped elements, each of the third and forth elements including a pair of generally rigid sides and a crosspiece at first ends of the sides; means pivotally connecting the sides of the third element with respective sides of the first element; means pivotally connecting the sides of the fourth element with respective sides of the second element, said fourth element being movable from a first location extending upwardly and away from the second element to a second location extending downwardly and along the third element when the third element is in a position extending forwardly and downwardly from the first element; and means coupling the adjacent ends of the third element with the ends of the fourth element when said fourth element is in the first and second operative locations thereof.
Claim 3
Dependent Claim
32 words
The combination as set forth in claim 1, wherein, the sides of the third and fourth elements are generally parallel with each other when the fourth element is in said second location.
Claim 4
Dependent Claim
46 words
The combination as set forth in claim 1, wherein the coupling means includes a number of pins on one of said third and fourth elements, and a plate on the other of said third and fourth elements, the plate having holes for removably receiving the pins.
Claim 5
Dependent Claim
24 words
The combination as set forth in claim 3, wherein the pins and plates are near respective second ends of the third and fourth elements.
Claim 6
Dependent Claim
37 words
The combination as set forth in claim 1, wherein the crosspiece of the third element is in a ground engageable position when the third element is in said position extending forwardly and downwardly from the first element.
Claim 7
Dependent Claim
32 words
The combination as set forth in claim 1, wherein the ends of the third and fourth elements are adjacent to each other when the fourth element is in either of said locations.
Claim 8
Dependent Claim
79 words
The combination as set forth in claim 1, wherein said coupling means includes a plate for each side of the third element, respectively, each plate having a number of pin-reciving holes therethrough, and a plurality of spaced pins on each side of the fourth element, respectively, one pin being in a respective hole when the fourth element is in the first location, and a second pin being in another hole when the fourth element is in the second location.
Claim 9
Dependent Claim
57 words
The combination as set forth in claim 7, wherein each plate has a pair of side margins which converge toward each other, said one pin being received within a hole adjacent to one side margin of a respective plate and the second pin being received within a hole adjacent to the other side margin of the plate.
Claim 10
Dependent Claim
32 words
The combination as set forth in claim 7, wherein the plates are attached to the outer portions of respective sides of said third element near the outer ends of the third element.
Claim 11
Dependent Claim
45 words
The combination as set forth in claim 1, wherein the coupling means permits said first element and the second element to be moved toward each other to decrease the angular distance therebetween whereby the elements and wheels can define a wheeled carrier for elongated objects.
Claim 12
Dependent Claim
26 words
The combination as set forth in claim 1, wherein the elements are movable into juxtapositions with each other to present a collapsed condition for said elements.
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) | 1991-03-29 | 1991-09-28 | 1992-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-29 | 1995-09-28 | 1996-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-29 | 1999-09-28 | 2000-03-29 | $7700.00 | Window Closed / Lapsed |