US3437858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slot wedge for electric motors or generators
Assignee: Glastic Corp
•
Filing: 1966-11-17
•
Granted: 1969-04-08
•
Expires: 1986-11-17
Abstract
No abstract record available.
Inventors
- 👤 Roger B White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:34
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/46; H02K3/48; H02K3/487; Y; Y10; Y10S; Y10S174/00; Y10S174/13; Y10S174/14; Y10S174/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A SLOT WEDGE ADAPTED TO BE POSITIONED IN A COIL SLOT OF AN ELECTRIC MOTOR OR GENERATOR WHEREIN THE OUTER PORTIONS OF THE SLOT SIDEWALLS EACH HAVE AN INWARDLY FACING SURFACE FORMING A TOOTH LIP THEREBEYOND, THE EXTREME ENDS OF WHICH LIPS EACH DEFINE A RADIALLY EXTENDING SHEAR PLANE, SAID WEDGE HAVING A WIDTH GREATER THAN THE DISTANCE BETWEEN SAID PLANES AND HAVING EDGES DEFINED BY ANGLED SURFACES TO MATE WITH THE INWARDLY FACING SURFACES, THE IMPROVEMENT WHICH COMPRISES: A PAIR OF SPACED PORTIONS ONE IN EACH OF THE SHEAR PLANES AND AN INTERMEDIATE PORTION, SAID INTERMEDIATE PORTION BEING COMPRISES OF A PLURALITY OF FIBERS BOUND TOGETHER BY A HARDENED THERMOSETTING RESIN, SAID FIBERS AND RESIN HAVING A LOW SHEAR STRENGTH, SAID SPACED PORTIONS BEING COMPRISED OF MEANS HAVING A SUBSTANTIALLY HIGHER SHEAR STRENGTH AND BEING INTEGRALLY BOUND TO SAID INTERMEDIATE PORTION BY SAID RESIN.
Claim 2
Dependent Claim
145 words
A SLOT WEDGE ADAPTED TO BE POSITIONED IN A COIL SLOT OF AN ELECTRIC MOTOR OR GENERATOR WHEREIN THE OUTER PORTIONS OF THE SLOT SIDEWALLS EACH HAVE AN INWARDLY FACING SURFACE FORMING A TOOTH LIP THEREBEYOND, THE EXTREME ENDS OF WHICH LIPS EACH DEFINE A RADIALLY EXTENDING SHEAR PLANE, SAID WEDGE HAVING A WIDTH GREATER THAN THE DISTANCE BETWEEN SAID PLANES AND HAVING EDGES DEFINED BY ANGLED SURFACES TO MATE WITH THE INWARDLY FACING SURFACES, THE IMPROVEMENT WHICH COMPRISES: A PAIR OF SPACED PORTIONS ONE IN EACH OF THE SHEAR PLANES AND AN INTERMEDIATE PORTION, SAID INTERMEDIATE PORTION BEING COMPRISES OF A PLURALITY OF FIBERS BOUND TOGETHER BY A HARDENED THERMOSETTING RESIN, SAID FIBERS AND RESIN HAVING A LOW SHEAR STRENGTH, SAID SPACED PORTIONS BEING COMPRISED OF MEANS HAVING A SUBSTANTIALLY HIGHER SHEAR STRENGTH AND BEING INTEGRALLY BOUND TO SAID INTERMEDIATE PORTION BY SAID RESIN.
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) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |