Patent US3704527A successfully refreshed from Google Patents.
US3704527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical transfer teaching system with universal mountings
Assignee: Individual
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Filing: 1970-04-06
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Granted: 1972-12-05
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Expires: 1990-04-06
Abstract
Abstract A mechanical transfer teaching system including a planar base having a plurality of parallel grooves therein, a plurality of shaft support bases slidably disposed within and interlocked with said grooves, one or more shaft supports perpendicular to each shaft support base and rotatably attached thereto, which shaft support base and shaft support serve as a universal mounting to which mechanical transfer elements can be interchangably attached.
Inventors
- 👤 Stephen A Berkman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:23
CPC Classifications
G; G09; G09B; G09B25/00; G09B25/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
114 words
In a mechanical transfer teaching system having a planar base with a plurality of parallel grooves therein, the improvement comprising a plurality of shaft support members adapted to be slideably moved to any desired position within said grooves; each of said shaft support members comprising a planar shaft support base adapted to interlock with one of said grooves and at least one shaft support post adapted to extend upwardly from said shaft support base and means for rotatably mounting the post to the shaft support base; each of said shaft support members being adapted to receive interchangeable mechanical transfer elements; and means for locking said transfer support members in desired positions in said grooves.
Claim 2
Dependent Claim
114 words
In a mechanical transfer teaching system having a planar base with a plurality of parallel grooves therein, the improvement comprising a plurality of shaft support members adapted to be slideably moved to any desired position within said grooves; each of said shaft support members comprising a planar shaft support base adapted to interlock with one of said grooves and at least one shaft support post adapted to extend upwardly from said shaft support base and means for rotatably mounting the post to the shaft support base; each of said shaft support members being adapted to receive interchangeable mechanical transfer elements; and means for locking said transfer support members in desired positions in said grooves.
Claim 3
Dependent Claim
38 words
A mechanical transfer teaching system as claimed in claim 1 wherein at least one of said posts is comprised of an upper shaft support rod and a lower shaft support rod arranged in telescoping relationShip with each other.
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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |