Patent US4873841A successfully refreshed from Google Patents.
US4873841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable cooler
Assignee: Individual
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Filing: 1989-04-03
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Granted: 1989-10-17
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Expires: 2009-04-03
Abstract
Abstract A portable cooler comprising a cooling compartment having a pair of wheels coupled thereto at one end thereof and having a handle positioned on and coupled to one side of the cooling compartment opposite said wheels for pulling the portable cooler. The handle is angularly adjustable about an axle when the cooler is being pulled and is secured to the cooler when not in use. A pair of lifting handles are positioned on opposite sides of the cooler for lifting the cooler to and from a vehicle.
Inventors
- 👤 William Bradshaw
- 👤 Robert Shepard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:23
CPC Classifications
F; F25; F25D; F25D3/00; F25D3/02; F25D3/06; A; A45; A45C; A45C11/00; A45C11/20; A45C5/00; A45C5/14; B; B62; B62B; B62B2204/00; B62B2204/06; F25D2303/00; F25D2303/08; F25D2303/081; F25D2331/00; F25D2331/80; F25D2331/804; F25D2400/00; F25D2400/38
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
142 words
A portable cooler comprising: a cooling compartment; an axle positioned through the lower portion of one end of the cooling compartment and extending beyond the sides of the cooling compartment; a pair of wheels, one of which is coupled to each end of the axle; a wheel nut coupled to the end of axle securing said wheels to the axle; a pair of handle support structures coupled to opposite sides of the cooler compartment each support structure having a handle support axle; a lifting handle coupled to the handle support axle of each handle support structure enabling the cooler to be easily lifted to and from a vehicle; and a pulling handle coupled to one of the handle support axles wherein said pulling handle being easily rotated about the handle axle enabling a user to easily and comfortably pull the portable cooler.
Claim 2
Dependent Claim
142 words
A portable cooler comprising: a cooling compartment; an axle positioned through the lower portion of one end of the cooling compartment and extending beyond the sides of the cooling compartment; a pair of wheels, one of which is coupled to each end of the axle; a wheel nut coupled to the end of axle securing said wheels to the axle; a pair of handle support structures coupled to opposite sides of the cooler compartment each support structure having a handle support axle; a lifting handle coupled to the handle support axle of each handle support structure enabling the cooler to be easily lifted to and from a vehicle; and a pulling handle coupled to one of the handle support axles wherein said pulling handle being easily rotated about the handle axle enabling a user to easily and comfortably pull the portable cooler.
Claim 3
Dependent Claim
41 words
A portable cooler as set forth in claim 1 wherein the handle support structure further comprises: a pair of handle support flanges coupled to the sides of the cooler compartment, said flanges having apertures suitable for receiving the handle support axle.
Claim 4
Dependent Claim
33 words
A portable cooler as set forth in claim 2 wherein said portable cooler further comprises a wheel spacer positioned between each side of the cooler compartment adjacent each of the pair of wheels.
Claim 5
Dependent Claim
38 words
A portable cooler as set forth in claim 3 wherein said portable cooler further comprises a handle clip positioned on the side of the cooler, suitable for receiving the handle when the portable cooler is not in use.
Claim 6
Dependent Claim
56 words
A portable cooler as set forth in claim 4 wherein said portable cooler further comprises a base stand positioned on the underside of the cooler compartment opposite the pair of wheels, said base stand being of a height to create a slope from the wheels to the base stand when the cooler is not in use.
Claim 7
Dependent Claim
176 words
A portable cooler comprising; a cooling compartment; axle support extensions coupled to the underside of said cooling compartment at one end thereof having a semi-circular groove; an axle being positioned within the semi-circular groove of the axle support extensions and said axle extending beyond the sides of the cooler compartment; a pair of wheels, coupled to each end of the axle; a wheel nut coupled to each end of the axle thereby inhibiting the wheel from falling off the axle; a pair of handle support structures coupled to opposite sides of the cooler compartment, each support structure having a handle support axle, wherein one of said pair of the handle support structures is positioned on the side of the cooler adjacent the wheels; a lifting handle coupled to the handle support axle of each handle support structure; and a pulling handle coupled to the handle support axle of the handle support structure opposite the wheels, said pulling handle being easily rotated about the handle axle enabling a user to easily and comfortably pull the portable cooler.
Claim 8
Dependent Claim
176 words
A portable cooler comprising; a cooling compartment; axle support extensions coupled to the underside of said cooling compartment at one end thereof having a semi-circular groove; an axle being positioned within the semi-circular groove of the axle support extensions and said axle extending beyond the sides of the cooler compartment; a pair of wheels, coupled to each end of the axle; a wheel nut coupled to each end of the axle thereby inhibiting the wheel from falling off the axle; a pair of handle support structures coupled to opposite sides of the cooler compartment, each support structure having a handle support axle, wherein one of said pair of the handle support structures is positioned on the side of the cooler adjacent the wheels; a lifting handle coupled to the handle support axle of each handle support structure; and a pulling handle coupled to the handle support axle of the handle support structure opposite the wheels, said pulling handle being easily rotated about the handle axle enabling a user to easily and comfortably pull the portable cooler.
Claim 9
Dependent Claim
41 words
A portable cooler as set forth in claim 6 wherein the handle support structure further comprises: a pair of handle support flanges coupled to the sides of the cooler compartment, said flanges having apertures suitable for receiving the handle support axle.
Claim 10
Dependent Claim
33 words
A portable cooler as set forth in claim 7 wherein said portable cooler further comprises a wheel spacer positioned between each side of the cooler compartment and each of the pair of wheels.
Claim 11
Dependent Claim
38 words
A portable cooler as set forth in claim 8 wherein said portable cooler further comprises a handle clip positioned on the side of the cooler suitable for receiving the handle when the portable cooler is not in use.
Claim 12
Dependent Claim
56 words
A portable cooler as set forth in claim 9 wherein said portable cooler further comprises a base stand positioned on the underside of the cooler compartment opposite the pair of wheels, said base stand being of a height to create a slope from the wheels to the base stand when the cooler is not in use.
Claim 13
Dependent Claim
171 words
A portable cooler comprising; a cooling compartment; a semi-circular groove positioned on the underside of the cooling compartment at one end thereof suitable for receiving an axle; an axle positioned within said semi-circular groove of a length extending beyond the sides of the cooling compartment; a pair of wheels coupled to each end of the axle; a wheel nut coupled to each end of the axle thereby inhibiting the wheel from falling off the axle; a pair of handle support structures coupled to opposite sides of the cooler compartment, each support structure having a handle support axle, wherein one of said pair of the handle support structures is positioned on the side of the cooler adjacent the wheels; a lifting handle coupled to the handles support axle of each handle support structure; and a pulling handle coupled to the handle support axle of the handle support structure opposite the wheels, said pulling handle being easily rotated about the handle axle enabling a user to easily and comfortably pull said portable cooler.
Claim 14
Dependent Claim
171 words
A portable cooler comprising; a cooling compartment; a semi-circular groove positioned on the underside of the cooling compartment at one end thereof suitable for receiving an axle; an axle positioned within said semi-circular groove of a length extending beyond the sides of the cooling compartment; a pair of wheels coupled to each end of the axle; a wheel nut coupled to each end of the axle thereby inhibiting the wheel from falling off the axle; a pair of handle support structures coupled to opposite sides of the cooler compartment, each support structure having a handle support axle, wherein one of said pair of the handle support structures is positioned on the side of the cooler adjacent the wheels; a lifting handle coupled to the handles support axle of each handle support structure; and a pulling handle coupled to the handle support axle of the handle support structure opposite the wheels, said pulling handle being easily rotated about the handle axle enabling a user to easily and comfortably pull said portable cooler.
Claim 15
Dependent Claim
41 words
A portable cooler as set forth in claim 11 wherein the handle support structure further comprises; a pair of handle support flanges coupled to the sides of the cooler compartment, said flanges having apertures suitable for receiving the handle support axle.
Claim 16
Dependent Claim
33 words
A portable cooler as set forth in claim 12 wherein said portable cooler further comprises a wheel spacer positioned between each side of the cooler compartment and each of the pair of wheels.
Claim 17
Dependent Claim
38 words
A portable cooler as set forth in claim 13 wherein said portable cooler further comprises a handle clip positioned on the side of the cooler suitable for receiving the handle when the portable cooler is not in use.
Claim 18
Dependent Claim
43 words
A portable cooler as set forth in claim 14 wherein said portable cooler further comprises a base stand positioned on the underside of the cooler compartment opposite the pair of wheels enabling the portable cooler to be almost level when not in use.
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) | 1992-10-16 | 1993-04-17 | 1993-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-16 | 1997-04-17 | 1997-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-16 | 2001-04-17 | 2001-10-17 | $7700.00 | Window Closed / Lapsed |