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US4620637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trolley
Assignee: Individual
•
Filing: 1985-09-09
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Granted: 1986-11-04
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Expires: 2005-09-09
Abstract
Abstract Four metal support pipes with casters mounted on the lower ends thereof are arranged at the four corners of a quadrilateral. Pipe cover portions provided at four corners of a plurality of synthetic resin rack boards are threaded over the corresponding support pipes. Synthetic resin spacer pipes are threaded over the support pipes between the pipe cover portions of vertically-adjacent rack boards. Tubular cushion materials which can freely expand and contract are threaded over the support pipes between the pipe cover portions of the uppermost rack board and the uppermost spacer pipes, and fastening members are fitted into the upper ends of the support pipes to fasten the uppermost rack board.
Inventors
- 👤 Masashi Karashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:04
CPC Classifications
B; B62; B62B; B62B3/00; B62B3/006; A; A47; A47B; A47B96/00; F; F16; F16B; F16B7/00; F16B7/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A trolley comprising: four metal support pipes which are arranged at the four corners of a quadrilateral and which have casters mounted on the lower ends thereof; a plurality of rack boards of a synthetic resin provided with pipe cover portions at four corners thereof which are threaded over said metal support pipes; spacer pipes of a synthetic resin inserted between said pipe cover portions of vertically-adjacent rack boards; fastening members which are fitted into the upper ends of said support pipes for the purpose of fastening the uppermost of said rack boards; and tubular cushion materials which can freely expand and contract and which are inserted between said pipe cover portions of said uppermost rack board and the uppermost of said spacer pipes.
Claim 2
Dependent Claim
124 words
A trolley comprising: four metal support pipes which are arranged at the four corners of a quadrilateral and which have casters mounted on the lower ends thereof; a plurality of rack boards of a synthetic resin provided with pipe cover portions at four corners thereof which are threaded over said metal support pipes; spacer pipes of a synthetic resin inserted between said pipe cover portions of vertically-adjacent rack boards; fastening members which are fitted into the upper ends of said support pipes for the purpose of fastening the uppermost of said rack boards; and tubular cushion materials which can freely expand and contract and which are inserted between said pipe cover portions of said uppermost rack board and the uppermost of said spacer pipes.
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) | 1989-11-03 | 1990-05-05 | 1990-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-03 | 1994-05-05 | 1994-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-03 | 1998-05-05 | 1998-11-04 | $7700.00 | Window Closed / Lapsed |