US3217366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound projecting shell
Assignee: Individual
•
Filing: 1959-11-18
•
Granted: 1965-11-16
•
Expires: 1979-11-18
Abstract
No abstract record available.
Inventors
- 👤 Harry J Wenger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 01:07
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/025; B60P3/0252; E; E04; E04B; E04B1/00; E04B1/343; E04B1/34336; E04H; E04H3/00; E04H3/10; E04H3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A SOUND PROJECTING SHELL COMPRISING, A WHEELED VAN OPEN AT ONE SIDE, A PLURALITY OF FIXED RISERS SECURED THEREIN, A SERIES OF INDIVIDUALLY MOVABLE RISERS SHORTER THAN SAID FIXED RISERS ENGAGED WITH AND POSITIONED ADJACENT TO SAID FIXED RISERS SELECTIVELY TO FORM A FLAT STAGE AND CONSECUTIVE RISERS ALTERNATELY, A CANOPY HINGED TO SAID VAN AT THE TOP OF ITS OPEN SIDE, AND MEANS FOR OPENING, SUPPORTED IN AN OPEN POSITION, AND CLOSING SAID CANOPY SELECTIVELY; SAID MEANS COMPRISING, ARMS PIVOTED TO SAID CANOPY, TRACKS SECURED TO SAID VAN, SAID ARMS HAVING ENDS SLIDABLY ENGAGING SAID TRACKS, SHEAVE POSITIONED NEAR SAID TRACKS, CABLES REEVED OVER SAID SHEAVES, MEANS SECURING SAID CABLES TO THE ARM ENDS IN SAID TRACKS, AND A WINCH FOR MOVING SAID CABLE IN TWO DIRECTIONS.
Claim 2
Dependent Claim
128 words
A SOUND PROJECTING SHELL COMPRISING, A WHEELED VAN OPEN AT ONE SIDE, A PLURALITY OF FIXED RISERS SECURED THEREIN, A SERIES OF INDIVIDUALLY MOVABLE RISERS SHORTER THAN SAID FIXED RISERS ENGAGED WITH AND POSITIONED ADJACENT TO SAID FIXED RISERS SELECTIVELY TO FORM A FLAT STAGE AND CONSECUTIVE RISERS ALTERNATELY, A CANOPY HINGED TO SAID VAN AT THE TOP OF ITS OPEN SIDE, AND MEANS FOR OPENING, SUPPORTED IN AN OPEN POSITION, AND CLOSING SAID CANOPY SELECTIVELY; SAID MEANS COMPRISING, ARMS PIVOTED TO SAID CANOPY, TRACKS SECURED TO SAID VAN, SAID ARMS HAVING ENDS SLIDABLY ENGAGING SAID TRACKS, SHEAVE POSITIONED NEAR SAID TRACKS, CABLES REEVED OVER SAID SHEAVES, MEANS SECURING SAID CABLES TO THE ARM ENDS IN SAID TRACKS, AND A WINCH FOR MOVING SAID CABLE IN TWO DIRECTIONS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |