US3178154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power actuator mechanism
Assignee: Safway Steel Products Inc
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Filing: 1963-01-07
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Granted: 1965-04-13
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Expires: 1983-01-07
Abstract
No abstract record available.
Inventors
- 👤 Mcclelland Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:14
CPC Classifications
D; D06; D06B; D06B3/00; D06B3/10; D06B2700/00; D06B2700/09
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
106 words
A PUSH-PULL ACTUATOR MECHANISM FOR OPERATING RETRACTABLE BLEACHERS AND THE LIKE COMPRISING: AN ACTUATOR CHAIN MEANS INCLUDING AN ACTUATOR CHAIN ADAPTED WHEN ACTUATED TO OPEN AN CLOSE A RETRACTABLE BLEACHER; A DRIVE MEANS FOR SAID ACTUATOR CHAIN MEANS INCLUDING A DRIVE MEMBER OPERATIVELY CONNECTED TO SAID ACTUATOR CHAIN; AND STORAGE MEANS FOR SAID ACTUATOR CHAIN, SAID STORAGE MEANS INCLUDING TRACK MEANS ADAPTED TO GUIDE SAID ACTUATOR CHAIN IN A SPIRAL PATH WHICH EXTENDS UPWARDLY AND BACK OVER SAID ACTUATOR MEMBER, SAID ACTUATOR CHAIN, ACTUATOR MEMBER AND TRACK MEANS ALL LYING IN A COMMON VERTICAL PLANE WHICH EXTENDS PARALLEL TO THE PATH OF MOVEMENT OF THE BLEACHERS.
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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |