US3860020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tray cart washer
Assignee: Individual
•
Filing: 1973-07-09
•
Granted: 1975-01-14
•
Expires: 1993-07-09
Abstract
Abstract An enclosed wash chamber has an open top inclined at 45* and extending down substantially to the floor level. A tray cart used for carrying food trays on airlines may be wheeled to the wash chamber and then tilted over on the open top with its door opened 180* so that the open side of the tray cart covers half the open top of the wash chamber and the door of the cart covers the other half. Revolving wash and rinse sprays in the wash chamber wash and rinse the inside of the cart and the inside of the door with the water draining down into the wash chamber. A foot pedal operated clamp bar grips the top of the cart and the top of the door to hold the cart and door securely in washing position.
Inventors
- 👤 Jr Milton H King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:42
CPC Classifications
A; A47; A47L; A47L15/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
85 words
A tray cart washer comprising a wash chamber having a pair of side walls defining an inclined open top sloping down substantially to floor level on the front side of said chamber, wash and rinse nozzles in said chamber directed toward said open top, means to support a tilted tray cart in inclined position on said open top of said chamber with the inside of said cart exposed to sprays from said nozzles, and means to clamp the top of the cart against said chamber.
Claim 2
Dependent Claim
85 words
A tray cart washer comprising a wash chamber having a pair of side walls defining an inclined open top sloping down substantially to floor level on the front side of said chamber, wash and rinse nozzles in said chamber directed toward said open top, means to support a tilted tray cart in inclined position on said open top of said chamber with the inside of said cart exposed to sprays from said nozzles, and means to clamp the top of the cart against said chamber.
Claim 3
Dependent Claim
30 words
A tray cart washer as defined in claim 1, said clamp means comprising a movable clamp bar, and a foot pedal for retracting said clamp bar out of clamping position.
Claim 4
Dependent Claim
35 words
A tray cart washer as defined in claim 2 including a vertically slidable back plate closing the back side of said chamber, said clamp bar being connected with the upper end of said back plate.
Claim 5
Dependent Claim
64 words
A tray cart washer as defined in claim 1 for carts having hinged doors, said means to support a tray cart comprising a support bar on one of said side walls for one side of said cart, a support bar on the opposite side wall for the swinging edge of the cart door, and a central support bar arranged to underlie the door hinge.
Claim 6
Dependent Claim
75 words
A tray cart washer as defined in claim 1 for carts supported on wheels which elevate the bottom of the cart above floor level, said chamber including a low front wall, and support brackets on said front wall below the level of the bottom of the cart permitting the front of the cart to be wheeled over said brackets so that the cart may be tilted on said brackets to said inclined position for washing.
Claim 7
Dependent Claim
28 words
A tray cart washer as defined in claim 1, said wash and rinse nozzles being rotatable in inclined planes parallel with said inclined open top of said chamber.
Claim 8
Dependent Claim
25 words
A tray cart washer as defined in claim 1 including removable strainer trays in the bottom of said chamber, and a sump under said trays.
Claim 9
Dependent Claim
61 words
A tray cart washer as defined in claim 1 including means for rotating said nozzles adjacent said open top of said wash chamber, brackets on the front of said chamber engageable with the bottom of the cart for pivoting the cart to said inclined position, and foot lever operated means for clamping the top of the cart in said inclined position.
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) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |