US4819448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evaporative cooler
Assignee: TRADEWINDS Tech Inc
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Filing: 1987-09-11
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Granted: 1989-04-11
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Expires: 2007-09-11
Abstract
Abstract An evaporative cooler having a molded plastic base and a molded plastic top cap includes molded plastic legs on the base and molded recesses in the top cap for permitting a plurality of coolers to be stacked. Adjustable leg extensions can be attached to the legs for mounting the cooler on a sloping roof. Latches are pivotally mounted on the corners of the base and the top cap for holding the side panels of the cooler together.
Inventors
- 👤 Charles J. Bardo
- 👤 Charles M. Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:16
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/32; Y; Y10; Y10S; Y10S62/00; Y10S62/16
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
99 words
An evaporative cooler comprising a molded plastic base, a plurality of side panels mountd on the base, and a top cap above the side panels, the base including a plurality of molded legs, a leg extension attached to at least one of the molded legs for mounting the cooler on a sloping surface, and a leveler support bracket attached to the leg extension and having a flat supporting surface, the leveler support bracket being adjustably attached to the leg extension whereby the angle of the flat supporting surface can be adjusted to correspond to the slope of the roof.
Claim 2
Dependent Claim
99 words
An evaporative cooler comprising a molded plastic base, a plurality of side panels mountd on the base, and a top cap above the side panels, the base including a plurality of molded legs, a leg extension attached to at least one of the molded legs for mounting the cooler on a sloping surface, and a leveler support bracket attached to the leg extension and having a flat supporting surface, the leveler support bracket being adjustably attached to the leg extension whereby the angle of the flat supporting surface can be adjusted to correspond to the slope of the roof.
Claim 3
Dependent Claim
34 words
The cooler of claim 1 including a foot attached to the leg extension and having a generally vertically extending flat mounting bracket, the leveler support bracket being adjustably attached to the flat mounting bracket.
Claim 4
Dependent Claim
87 words
The cooler of claim 1 in which the leg extension includes an upper part attached to the molded leg and a lower part attached to the upper part, one of the upper and lower parts having an attaching opening and the other of the upper and lower parts having a plurality of vertically spaced attaching openings which are alignable with the attaching opening in said one part by moving the parts vertically relative to each other whereby the overall length of the leg extension can be varied.
Claim 5
Dependent Claim
40 words
The cooler of claim 1 in which the base includes a downwardly extending projection adjacent said one molded leg and space from one molded leg approximately the thickness of the leg extension for holding the leg extension against the leg.
Claim 6
Dependent Claim
72 words
The cooler of claim 1 in which said one molded leg includes a middle vertically extending panel and a pair of side vertically extending panels each of which form an obtuse included angle with the middle panel, said leg extension including a middle vertically extending panel which abuts the middle panel of said one leg and a pair of side vertically extending panels which abut the side panels of said one leg.
Claim 7
Dependent Claim
62 words
The cooler of claim 1 in which said top cap is molded plastic and is provided with a recess vertically above said legs, each of said recesses having a shape corresponding to the bottom of the legs whereby a pair of said coolers can be vertically stacked by inserting the legs of the upper cooler into the recesses of the lower cooler.
Claim 8
Dependent Claim
33 words
The cooler of claim 6 in which each of said recesses has a plurality of side walls for engaging the leg of a stacked cooler and for restraining horizontal movement of said leg.
Claim 9
Dependent Claim
65 words
The cooler of claim 1 including a latch pivotally mounted on the top cap above the juncture between each pair of adjacent side panels and a pair of latch brackets attached to the top of each of the side panels, each of the latches being engageable with a pair of latch brackets on a pair of adjacent side panels for holding the side panels together.
Claim 10
Dependent Claim
28 words
The cooler of claim 8 in which each of said latch brackets includes a generally vertically extending groove into which the latch is inserted for latching the brackets.
Claim 11
Dependent Claim
68 words
The cooler of claim 8 including a bottom latch pivotally mounted on the base below the juncture between each pair of adjacent side panels and a pair of bottom latch brackets attached to the bottom of each of the side panels, each of the bottom latches being engageable with a pair of bottom latch brackets on a pair of adjacent side panels for holding the side panels together.
Claim 12
Dependent Claim
30 words
The cooler of claim 10 in which each of said bottom latch brackets includes a generally vertically extending groove into which the bottom latch is inserted for latching the brackets.
Claim 13
Dependent Claim
96 words
An evaporative cooler comprising a molded plastic base, a plurality of side panels mounted on the base, and a molded plastic top cap above the side panels, the base being generally rectangular and having a downwardly extending molded leg at each corner thereof, the top cap being generally rectangular and having a downwardly extending recess at each corner thereof, each recess having a shape corresponding to the bottom of the legs whereby a pair of said coolers can be vertically stacked by inserting the legs of the upper cooler into the recesses of the lower cooler.
Claim 14
Dependent Claim
96 words
An evaporative cooler comprising a molded plastic base, a plurality of side panels mounted on the base, and a molded plastic top cap above the side panels, the base being generally rectangular and having a downwardly extending molded leg at each corner thereof, the top cap being generally rectangular and having a downwardly extending recess at each corner thereof, each recess having a shape corresponding to the bottom of the legs whereby a pair of said coolers can be vertically stacked by inserting the legs of the upper cooler into the recesses of the lower cooler.
Claim 15
Dependent Claim
33 words
The cooler of claim 12 in which each of said recesses has a plurality of side walls for engaging the leg of a stacked cooler and for restraining horizontal movement of said leg.
Claim 16
Dependent Claim
93 words
An evaporative cooler comprising a generally rectangular molded plastic base, four molded plastic side panels mounted on the base, and a generally rectangular molded plastic top cap above the side panels, a latch pivotally mounted on the top cap at each of the corners thereof for movement between latching and unlatching positions, and a pair of molded latch brackets at the top of each of the side panels, each of the latches being engageable with a pair of latch brackets on a pair of adjacent side panels for holding the side panels together.
Claim 17
Dependent Claim
93 words
An evaporative cooler comprising a generally rectangular molded plastic base, four molded plastic side panels mounted on the base, and a generally rectangular molded plastic top cap above the side panels, a latch pivotally mounted on the top cap at each of the corners thereof for movement between latching and unlatching positions, and a pair of molded latch brackets at the top of each of the side panels, each of the latches being engageable with a pair of latch brackets on a pair of adjacent side panels for holding the side panels together.
Claim 18
Dependent Claim
34 words
The cooler of claim 14 in which the latch is generally U-shaped and each of the latch brackets includes a generally vertically extending groove into which the latch is inserted for latching the brackets.
Claim 19
Dependent Claim
67 words
The cooler of claim 14 including a bottom latch pivotally mounted on the base below the juncture between each pair of adjacent side panels and a pair of bottom latch brackets attached to the bottom of each of the side panels, each of the bottom latches being engageable with a pair of bottom latch brackets on a pair of adjacent side panels for holding the side panels.
Claim 20
Dependent Claim
30 words
The cooler of claim 16 in which each of said bottom latch brackets includes a generally vertically extending groove into which the bottom latch is inserted for latching the brackets.
Claim 21
Dependent Claim
83 words
The cooler of claim 14 in which the top cap includes a molded latch support bracket at each corner thereof, each latch having a generally U-shaped latching portion and a pair of outwardly extending end portions which are pivotally mounted in openings in one of the latch support brackets, each of the latch support brackets having a detent for engaging the U-shaped latching portion of a latch for maintaining the latch out of engagement with the side panels when the latch is unlatched.
References Cited (Backward Citations)
US4470271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-10 | 1992-10-10 | 1993-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-10 | 1996-10-10 | 1997-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-10 | 2000-10-10 | 2001-04-11 | $7700.00 | Window Closed / Lapsed |