US4934728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folding cart
Assignee: Individual
•
Filing: 1989-08-23
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Granted: 1990-06-19
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Expires: 2009-08-23
Abstract
Abstract A three-wheeled cart includes a frame body whose rear portion is supported by a pair of rear wheels. An inclined, elongated U-shaped tube which has an upper handle portion and a lower turnable transverse connecting tube is pivoted to the frame body. A front fork member carrying a front wheel is attached to the turnable connecting tube. The front fork member supports the front portion of the frame body when the cart is in use and can be turned rearward to place the front wheel between the rear wheels when not in use.
Inventors
- 👤 Franys Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:44
CPC Classifications
B; B62; B62B; B62B7/00; B62B7/04; B62B7/06; B62B7/004; B62B7/044
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
280 words
A cart for use between an extended operative position and a folded stored position comprising: a frame body having a rear portion, a front portion, and two spaced apart side fence members interconnecting said rear and front portions, said front portion having a front transverse tube portion with two ends connected to said side fence members; a pair of rear wheels attached to the bottom side of said rear portion of said frame body; a U-shaped tube having two arm portions extending in between and respectively pivoted to said side fence members each arm portion having an upper end and a bottom end, and an upper transverse handle portion connected to the upper end of said arm portions, said U-shaped tube being inclined with respect to a vertical axis; a transverse connecting member connected to the bottom ends of said arm portions, said transverse connecting member being rotatable about a transverse horizontal axis relative to said arm portions, said axis being located rearwardly of said front transverse tube portion of said frame body and lying substantially in the same horizontal plane as said front transverse tube portion of said frame body while in said operative position; a front fork member having a rear end connected to said transverse connecting member and a front end having a downwardly bent portion which extends below said front transverse tube portion of said frame body, said front fork member supporting said front transverse tube portion while in said operative position; a front wheel attached to said downwardly bent portion; and locking means for releasably locking said transverse connecting member in a fixed position relative to said front transverse tube while in said operative position.
Claim 2
Dependent Claim
280 words
A cart for use between an extended operative position and a folded stored position comprising: a frame body having a rear portion, a front portion, and two spaced apart side fence members interconnecting said rear and front portions, said front portion having a front transverse tube portion with two ends connected to said side fence members; a pair of rear wheels attached to the bottom side of said rear portion of said frame body; a U-shaped tube having two arm portions extending in between and respectively pivoted to said side fence members each arm portion having an upper end and a bottom end, and an upper transverse handle portion connected to the upper end of said arm portions, said U-shaped tube being inclined with respect to a vertical axis; a transverse connecting member connected to the bottom ends of said arm portions, said transverse connecting member being rotatable about a transverse horizontal axis relative to said arm portions, said axis being located rearwardly of said front transverse tube portion of said frame body and lying substantially in the same horizontal plane as said front transverse tube portion of said frame body while in said operative position; a front fork member having a rear end connected to said transverse connecting member and a front end having a downwardly bent portion which extends below said front transverse tube portion of said frame body, said front fork member supporting said front transverse tube portion while in said operative position; a front wheel attached to said downwardly bent portion; and locking means for releasably locking said transverse connecting member in a fixed position relative to said front transverse tube while in said operative position.
Claim 3
Dependent Claim
65 words
A cart as claimed in claim 1, wherein each of said side fence members includes a framing tube which has a rear end connected to one of said rear wheels, said framing tube extending upward from said rear end, then bending forward and subsequently downward to a front end, each of said side fence members further having a covering sheet held by said framing tube.
Claim 4
Dependent Claim
47 words
A cart as claimed in claim 2, wherein said rear portion of said frame body has a transverse elongated member connected to said rear ends of said framing tubes, said front transverse tube portion having two ends respectively connected to said front ends of said framing tubes.
Claim 5
Dependent Claim
54 words
A cart as claimed in claim 3, wherein said transverse connecting member includes a transverse tube-like member and a transverse plate which is fixed to and extends radially from said transverse tube-like member, said locking means including means for detachably securing said transverse plate to said front transverse tube portion of said frame body.
Claim 6
Dependent Claim
21 words
A cart as claimed in claim 4, wherein said arm portions of said U-shaped tube are pivoted to said framing tubes.
Claim 7
Dependent Claim
28 words
A cart as claimed in claim 5, further including a seat member which is made of a flexible sheeting material and which is suspended from said U-shaped tube.
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) | 1993-06-18 | 1993-12-18 | 1994-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-18 | 1997-12-18 | 1998-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-18 | 2001-12-18 | 2002-06-19 | $7700.00 | Window Closed / Lapsed |