Patent US3601644A successfully refreshed from Google Patents.
US3601644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed regulation device for swing machine motors
Assignee: Necchi SpA
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Filing: 1969-12-17
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Granted: 1971-08-24
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Expires: 1989-12-17
Abstract
Abstract The invention relates to a device which permits the operator of a home-type sewing machine to regulate the speed thereof. The machine motor is of the commutator-type and is provided with a hand-manipulable knob member for varying the brush holder position.
Inventors
- 👤 Silvano Perlino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:03
CPC Classifications
H; H02; H02P; H02P25/00; H02P25/02; H02P25/10; H02P25/12; H02K; H02K23/00; H02K23/02; H02K23/18; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; H02P7/288
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
109 words
A driving motor of the commutator-type for sewing machines, comprising a housing, a commutator and rotatable brush holder within said housing, a motor shaft having an end proximate to said holder, a handle means extending outwardly of said housing, a cylindrical body having opposite ends, said handle being fixedly attached to one of said opposite ends and said holder being fixedly attached to the other of said opposite ends, said holder and handle, and body being integrally rotatable together about the rotational axis of the motor shaft, a spherical bearing means carried by said body along the rotational axis thereof, said shaft end being supported in said bearing means.
Claim 2
Dependent Claim
109 words
A driving motor of the commutator-type for sewing machines, comprising a housing, a commutator and rotatable brush holder within said housing, a motor shaft having an end proximate to said holder, a handle means extending outwardly of said housing, a cylindrical body having opposite ends, said handle being fixedly attached to one of said opposite ends and said holder being fixedly attached to the other of said opposite ends, said holder and handle, and body being integrally rotatable together about the rotational axis of the motor shaft, a spherical bearing means carried by said body along the rotational axis thereof, said shaft end being supported in said bearing means.
Claim 3
Dependent Claim
47 words
The motor of claim 1, said body comprising a central axial bore having axially extending grooves along its wall, said grooves being adapted to permit setting of the angular position of said holder independently of said handle means, said handle means being releasedly secured to said body.
References Cited (Backward Citations)
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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) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |