Patent US4846486A successfully refreshed from Google Patents.
US4846486A
Expired / Lapsed
US
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Combined trolley and seat unit
Assignee: Individual
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Filing: 1987-11-20
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Granted: 1989-07-11
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Expires: 2007-11-20
Abstract
Abstract A combined trolley and seat unit has an inverted U-shape main frame with principal frame side members carrying ground-engaging wheels and having a main frame support rigidly fixed thereto and to a projecting bag support which carries the lower end of a bag the upper end of which is hooked by a pocket over a hook. A folding seat frame having a U-shape leg frame is pivotally carried on the main frame on the side thereof remote from the bag-like container and is movable between a folded position lying substantially parallel to the main frame and an unfolded position in which a front leg frame to which the seat frame is attached contacts the ground and the wheels are spaced from the ground to allow the unit to be used as a seat with no risk of rolling movement.
Inventors
- 👤 Michael J. Hobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:46
CPC Classifications
A; A47; A47C; A47C4/00; A47C4/52; A47C13/00; B; B62; B62B; B62B1/00; B62B1/10; B62B1/12; B62B2202/00; B62B2202/26; B62B2202/40; B62B2202/402; B62B5/00; B62B5/08; B62B5/085
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
285 words
In a combined trolley and seat unit of the type comprising: a main frame including tubular or rod-like rod-like frame members, load container support means for supporting a load container on one side of said main frame, a folding seat frame of tubular or rod-like members, means pivotally mounting said folding seat frame to said main frame on the opposite side of said main frame from said load container support means for movement between folded and unfolded positions, a flexible laminar seat spanning seat frame members of said seat frame, leg frame means of tubular or rod-like frame members, means pivotally connecting said leg frame means to said seat frame, and ground-engaging wheels, the improvement comprising: main frame support means rigidly fixed to said main frame and said container support means and projecting from said main frame downwardly towards the ground thereby forming a triangular reinforcing sub-frame on said one side of said main frame, means mounting said ground-engaging wheels to said main frame, and said wheel mounting means and said main frame support means cooperatively interacting whereby when said seat frame is in its unfolded position, said wheel mounting means holds said wheels substantially out of load-bearing contact with the ground and said main frame support means and said leg frame means carrying the weight of said main frame to permit a user to sit safely on said seat without risk of movement by rolling on said wheels, and when said seat frame is moved from said unfolded to said folded position said wheel mounting means automatically moves said wheels into contact with the ground so that the weight of said main frame is carried by said wheels and said main frame support means.
Claim 2
Dependent Claim
285 words
In a combined trolley and seat unit of the type comprising: a main frame including tubular or rod-like rod-like frame members, load container support means for supporting a load container on one side of said main frame, a folding seat frame of tubular or rod-like members, means pivotally mounting said folding seat frame to said main frame on the opposite side of said main frame from said load container support means for movement between folded and unfolded positions, a flexible laminar seat spanning seat frame members of said seat frame, leg frame means of tubular or rod-like frame members, means pivotally connecting said leg frame means to said seat frame, and ground-engaging wheels, the improvement comprising: main frame support means rigidly fixed to said main frame and said container support means and projecting from said main frame downwardly towards the ground thereby forming a triangular reinforcing sub-frame on said one side of said main frame, means mounting said ground-engaging wheels to said main frame, and said wheel mounting means and said main frame support means cooperatively interacting whereby when said seat frame is in its unfolded position, said wheel mounting means holds said wheels substantially out of load-bearing contact with the ground and said main frame support means and said leg frame means carrying the weight of said main frame to permit a user to sit safely on said seat without risk of movement by rolling on said wheels, and when said seat frame is moved from said unfolded to said folded position said wheel mounting means automatically moves said wheels into contact with the ground so that the weight of said main frame is carried by said wheels and said main frame support means.
Claim 3
Dependent Claim
42 words
The combined trolley and seat unit of claim 1, wherein said main frame comprises two generally parallel side frame members joined at an upper end by a transverse handle member and spanned at or adjacent a lower end by a transverse support.
Claim 4
Dependent Claim
38 words
The combined trolley and seat unit of claim 1, wherein said seat frame comprises a U-shape seat member supporting a flexible fabric seat, and pivotally attached at the free ends of the limbs thereof to said main frame.
Claim 5
Dependent Claim
57 words
The combined trolley and seat unit of claim 3, wherein said leg frame is generally U-shape and is pivotally connected to said seat frame by pivot connector brackets at the free ends of the limbs of said U-shape leg frame such that the ground-contacting part of said leg frame comprises the central portion joining said two limbs.
Claim 6
Dependent Claim
82 words
The combined trolley and seat unit of claim 4, wherein said leg frame is connected to one end of at least one side strut pivotally attached at the other end to one of said main frame side frame members whereby to form a quadrilateral linkage the four sides of which are constituted by said side strut, said front leg frame, the adjacent side of said folding seat frame and the associated part of said principal side frame members of said main frame.
Claim 7
Dependent Claim
68 words
The combined trolley and seat unit of claim 5, wherein the shape and dimension of each of the members of said quadrilateral linkage are such that in the folded position of said folding seat frame the U-shape front leg frame lies substantially parallel to the plane defined by said main frame and lower than an upper transverse member of said main frame spanning said side frame members thereof.
Claim 8
Dependent Claim
46 words
The combined seat and trolley unit of claim 1, wherein there is provided a seat catch on said folding seat frame and catch pin means on said main frame engageable by said seat catch for retaining said catch with said seat frame in said folded position.
Claim 9
Dependent Claim
54 words
The combined seat and trolley unit of claim 1, wherein said ground wheels are located between said leg frame and said main frame support and entirely above a straight line joining the ground-contacting ends of said front leg frame and said main frame support when said seat frame is in the seat-unfolded position thereof.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-10 | 1993-01-09 | 1993-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-10 | 1997-01-09 | 1997-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-10 | 2001-01-09 | 2001-07-11 | $7700.00 | Window Closed / Lapsed |