US4846493A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable cooler with retractable wheels
Assignee: Individual
•
Filing: 1987-10-26
•
Granted: 1989-07-11
•
Expires: 2007-10-26
Abstract
Abstract A portable cooler includes a pair of wheels which are retractable into a pair of recesses in the main body of the cooler. The wheels pivot on frames which are connected by a horizontally-oriented rod, the rod being lockable in hook members in a retracted position and in an operable position. An extendable handle is attached to the forward end of the cooler to pull the cooler along the ground on its wheels.
Inventors
- 👤 Donald W. Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:30
CPC Classifications
A; A45; A45C; A45C5/00; A45C5/14; A45C5/146; B; B62; B62B; B62B1/00; B62B1/18; B62B1/20; B62B2204/00; B62B2204/06; B62B2205/00; B62B2205/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
198 words
A portable cooler, comprising: a hollow, main body having forward and rearward ends and an open top; a lid for selectively closing said open top; a recess in each corner of the lower rearward end of said cooler for receiving a wheel; a pair of wheels, each rotatably mounted on a frame connected to said body, each said frame pivotally connected to said body for pivoting said wheels means between a lower operable position and an upper retracted position; a horizontally-oriented rod connected between said frame means and vertically movable along the rearward end of said body so as to simultaneously pivot both said frame means between said operable and retracted positions; means for selectively locking said wheels in said operable position, including first rod-holding means mounted on the lower end of said rearward end of the main body for holding said rod and wheels in said operable position; means for selectively locking said wheels in said retracted position including second rod-holding means mounted above said first rod-holding means and adapted to hold said rod and wheels in said retracted position; means connected to said cooler for pulling the same when the wheels are in the operable position.
Claim 2
Dependent Claim
198 words
A portable cooler, comprising: a hollow, main body having forward and rearward ends and an open top; a lid for selectively closing said open top; a recess in each corner of the lower rearward end of said cooler for receiving a wheel; a pair of wheels, each rotatably mounted on a frame connected to said body, each said frame pivotally connected to said body for pivoting said wheels means between a lower operable position and an upper retracted position; a horizontally-oriented rod connected between said frame means and vertically movable along the rearward end of said body so as to simultaneously pivot both said frame means between said operable and retracted positions; means for selectively locking said wheels in said operable position, including first rod-holding means mounted on the lower end of said rearward end of the main body for holding said rod and wheels in said operable position; means for selectively locking said wheels in said retracted position including second rod-holding means mounted above said first rod-holding means and adapted to hold said rod and wheels in said retracted position; means connected to said cooler for pulling the same when the wheels are in the operable position.
Claim 3
Dependent Claim
18 words
The cooler of claim 1, wherein each said frame is connected to said body within each said recess.
Claim 4
Dependent Claim
19 words
The cooler of claim 1, wherein said means for pulling the cooler is mounted to the forward end thereof.
Claim 5
Dependent Claim
45 words
The cooler of claim 1, wherein said recesses have greater dimensions than said wheels such that said wheels will retract completely therein, such that when the wheels are retracted the cooler may be stored within the same space as a conventional cooler without such wheels.
Claim 6
Dependent Claim
64 words
The cooler of claim 1 wherein each said frame includes a vertically oriented plate means, said plate means having a forward end, a rearward end and an outwardly facing surface, said plate means pivotally mounted at its forward end for pivoting within a vertical plane, each said plate means having one of said wheels rotatably mounted on the outward surface intermediate the ends thereof.
Claim 7
Dependent Claim
46 words
The cooler of claim 1, wherein said first rod-holding means includes first hook member means with a downwardly directed hook portion for receiving said rod and wherein said second rod-holding means includes second hook member means with an upwardly directed hook portion for receiving said rod.
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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 |