Patent US3578148A successfully refreshed from Google Patents.
US3578148A
Expired / Lapsed
US
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Tray and conveyor assembly
Assignee: Individual
•
Filing: 1969-01-27
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Granted: 1971-05-11
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Expires: 1989-01-27
Abstract
Abstract A multitiered conveyor tray for facilitating serving tray assembly having a base, side and end walls for retaining articles on each tier level for travel along a directed path of travel on a conveyor to expose selected tiers to various treatment.
Inventors
- 👤 Charles P Pinckard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:48
CPC Classifications
A; A47; A47F; A47F10/00; A47F10/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
88 words
A portable, lightweight tray platform for a conveyor comprising: a horizontally disposed base, a plurality of stepped horizontal tiers supported on said base for retaining articles thereon, said tiers being horizontally and vertically spaced from each other such that there is no overlapping of the tiers, vertically disposed sections interconnecting and supporting adjacent tiers, said vertically disposed sections being horizontally and vertically spaced from each other, and means on said base for supporting independently said tray for displacement in straight and curved paths of travel along a surface.
Claim 2
Dependent Claim
88 words
A portable, lightweight tray platform for a conveyor comprising: a horizontally disposed base, a plurality of stepped horizontal tiers supported on said base for retaining articles thereon, said tiers being horizontally and vertically spaced from each other such that there is no overlapping of the tiers, vertically disposed sections interconnecting and supporting adjacent tiers, said vertically disposed sections being horizontally and vertically spaced from each other, and means on said base for supporting independently said tray for displacement in straight and curved paths of travel along a surface.
Claim 3
Dependent Claim
38 words
A tray platform for a conveyor as claimed in claim 1, rear and sidewalls and said vertically disposed sections on said tray forming a hollow interior with said tiers, said base enclosing the bottom of the tray platform.
Claim 4
Dependent Claim
57 words
A tray platform for a conveyor as claimed in claim 1, rear and sidewalls and said vertically disposed sections forming a hollow interior with said stepped horizontal tiers, said sidewalls converging partially toward each other intermediate the stepped tiers to permit contiguous tray alignment of a plurality of tray platforms traveling around a curved path of travel.
Claim 5
Dependent Claim
42 words
A tray platform for a conveyor as claimed in claim 1, each of said tiers having upwardly extending means for retaining articles on said tiers in selected portions thereof, one of said plurality of tiers being cantilevered with respect to said base.
Claim 6
Dependent Claim
21 words
A tray platform for a conveyor as claimed in claim 1, said base having a tray-receiving displacing lug recess formed therein.
Claim 7
Dependent Claim
19 words
A tray platform as claimed in claim 1, a foam material retained as backing for said stepped horizontal tiers.
Claim 8
Dependent Claim
20 words
A tray platform for a conveyor as claimed in claim 2, and a sound deadening material contained within said interior.
Claim 9
Dependent Claim
19 words
A tray platform as claimed in claim 2, and a foam material in said hollow interior for deadening sound.
Claim 10
Dependent Claim
25 words
A tray platform for a conveyor as claimed in claim 2, said stepped horizontal tiers, rear and sidewalls being of integral construction of plastic material.
Claim 11
Dependent Claim
37 words
A tray platform for a conveyor as claimed in claim 9, said stepped tiers being vertically and horizontally spaced apart to receive heat from an overhead heat source on a selected tier to heat articles supported thereon.
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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |