US3968606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable rostrum
Assignee: CALOS PETER M
•
Filing: 1974-08-30
•
Granted: 1976-07-13
•
Expires: 1994-08-30
Abstract
Abstract This invention has to do with a portable rostrum and, more particularly, to apparatus arranged to provide a stage for educational purposes and the like, which stage can be dis-assembled and carried to a remote area and re-erected without difficulty.
Inventors
- 👤 Odie D. Facemire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:39
CPC Classifications
E; E04; E04H; E04H3/00; E04H3/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
174 words
A portable rostrum, comprising a. a unit adapted to be connected to similar units, the unit consisting of a rectangular main frame from each corner of which extends a short leg, the frame being formed of angle iron with an upwardly-extending flange extending around its periphery to form a recess, and an inwardly- and horizontally-extending flange defining an opening, b. a continuous rigid rectangular floor removably carried in the recess and covering the opening, the floor having its upper surface covered with a rug material, c. a fastening means extending downwardly from the floor and movable from a first position in which the floor is removable from the frame to a second position in which the fastening means engages the underside of the frame and locks the floor in the frame against removal, d. a controller positioned at the upper surface of the floor and adapted to effect the movement of the fastening means when the controller is rotated, and e. a clamp adapted to hold the unit in contact with the similar units.
Claim 2
Dependent Claim
174 words
A portable rostrum, comprising a. a unit adapted to be connected to similar units, the unit consisting of a rectangular main frame from each corner of which extends a short leg, the frame being formed of angle iron with an upwardly-extending flange extending around its periphery to form a recess, and an inwardly- and horizontally-extending flange defining an opening, b. a continuous rigid rectangular floor removably carried in the recess and covering the opening, the floor having its upper surface covered with a rug material, c. a fastening means extending downwardly from the floor and movable from a first position in which the floor is removable from the frame to a second position in which the fastening means engages the underside of the frame and locks the floor in the frame against removal, d. a controller positioned at the upper surface of the floor and adapted to effect the movement of the fastening means when the controller is rotated, and e. a clamp adapted to hold the unit in contact with the similar units.
Claim 3
Dependent Claim
56 words
A portable rostrum as recited in Claim 1, wherein the fastening means consists of a shaft rotatably mounted in and extending vertically through the floor with the controller at its upper end and an arm non-rotatably mounted on the lower end of the shaft for movement from the said first position to the said second position.
Claim 4
Dependent Claim
76 words
A portable rostrum as recited in Claim 1, wherein the floor is provided with a peripheral frame of angle iron having an inwardly-directed horizontal flange that overlies the rug material and clamps it in place and a downwardly-directed flange which lies out side the main frame, the peripheral frame being attached to the floor by releasable fasteners which allow non-destructive release of the peripheral frame and thereby the rug material from the floor and subsequent reattachment.
References Cited (Backward Citations)
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FR1475402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |