US3694909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing electric rotary machines
Assignee: Individual
•
Filing: 1970-11-18
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Granted: 1972-10-03
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Expires: 1990-11-18
Abstract
Abstract The present disclosure relates to a manufacturing method for electric rotary machines. By employing this method the machines, e.g. electric motors, can be submitted to a running test before the rotor assembly is permanently mounted by bonding its cupshaped bearing supports to the ends of the stator core inside the stator winding heads. Machines which fail to meet the requirements need not be scrapped, but can be readily disassembled for recovering their good components.
Inventors
- 👤 Stig Lennart Hallerback
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:51
CPC Classifications
H; H02; H02K; H02K15/00; H02K15/16; H02K5/00; H02K5/04; H02K5/15; H02K5/16; H02K5/173; H02K5/1732; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49004; Y10T29/49009
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
142 words
A method for manufacturing rotary electric machines, such as electric motors comprising a stator member having a rotor chamber, a rotor member in the rotor chamber and bearing support member permanently bondEd to the stator at one end and supporting the rotor bearing means at its opposite end, consisting of the steps of assembling and supporting said rotor, stator, and bearing support members in an unsecured relationship under a compressive force between a pair of mandrels so that the rotor axis is coaxial with the rotor chamber in the stator and the bearing support member, subjecting the supported elements to a test to evaluate mechanical and electrical functioning and bonding the bearing support means to the stator core with a bonding agent prior to removal of the members from the support means if the unit passes predetermined mechanical and electrical test standards.
Claim 2
Independent Claim
142 words
A method for manufacturing rotary electric machines, such as electric motors comprising a stator member having a rotor chamber, a rotor member in the rotor chamber and bearing support member permanently bondEd to the stator at one end and supporting the rotor bearing means at its opposite end, consisting of the steps of assembling and supporting said rotor, stator, and bearing support members in an unsecured relationship under a compressive force between a pair of mandrels so that the rotor axis is coaxial with the rotor chamber in the stator and the bearing support member, subjecting the supported elements to a test to evaluate mechanical and electrical functioning and bonding the bearing support means to the stator core with a bonding agent prior to removal of the members from the support means if the unit passes predetermined mechanical and electrical test standards.
Claim 3
Dependent Claim
40 words
A method as claimed in claim 1 wherein the bearing support means is provided with an aperture and including the step of sealing off the aperture during the bonding operation to prevent bonding agent from penetrating into the rotor chamber.
Claim 4
Dependent Claim
25 words
A method as claimed in claim 1 including the step of insulating the stator after subjecting the machine to the mechanical and electrical functioning test.
Claim 5
Dependent Claim
51 words
A method as claimed in claim 1 including the step of feeding electric current to the machine after the mechanical and electrical functioning test and prior to removing it from the mounting means, the current being fed in a manner to cause the heat generated to act upon the bonding agent.
Claim 6
Dependent Claim
19 words
A method as claimed in claim 1 including the step of cementing the bearing means to the stator member.
Claim 7
Dependent Claim
18 words
A method as claimed in claim 1 including molding in the bearing support means to the stator member.
Claim 8
Dependent Claim
15 words
A method as claimed in claim 1 wherein the electric machine is an electric motor.
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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |