US4350104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewing machine motor mount
Assignee: Retail Holding NV
•
Filing: 1981-10-15
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Granted: 1982-09-21
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Expires: 2001-10-15
Abstract
Abstract A sewing machine motor is provided with stamped out sheet metal end brackets including arms with disc like end portions which are mounted for pivotal movement in slots in a frame to permit the motor to be adjusted as required to alter tension in a belt driven by the motor.
Inventors
- 👤 Albert N. Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:13
CPC Classifications
D; D05; D05B; D05B69/00; D05B69/10; D05B69/12; H; H02; H02K; H02K5/00; H02K5/26
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
111 words
In a sewing machine, an electric motor including sheet metal end brackets with integral parallel arms each of which has a circularly shaped disc like end portion thereon, a frame extending over the motor and including slots for the disc like end portions of the bracket arms, means on the frame confining said disc like end portions in the said slots for pivotal movement about an axis extending through the disc like end portions of the bracket arms, a power transmission belt in the machine drivable by the motor, and means for moving said end brackets and thereby the motor about said axis to effect a tension adjustment in the belt.
Claim 2
Dependent Claim
111 words
In a sewing machine, an electric motor including sheet metal end brackets with integral parallel arms each of which has a circularly shaped disc like end portion thereon, a frame extending over the motor and including slots for the disc like end portions of the bracket arms, means on the frame confining said disc like end portions in the said slots for pivotal movement about an axis extending through the disc like end portions of the bracket arms, a power transmission belt in the machine drivable by the motor, and means for moving said end brackets and thereby the motor about said axis to effect a tension adjustment in the belt.
Claim 3
Dependent Claim
41 words
The combination of claim 1 wherein the belt adjusting means includes a spring which biases the motor in one direction about said axis, and a screw which can be turned to move the motor in the opposite direction about said axis.
Claim 4
Dependent Claim
47 words
The combination of claim 2 including an integral tab on one of the end brackets spaced apart from the said axis, the spring being disposed between such tab and the frame, and the screw extending through the tab and spring into a threaded connection with the frame.
Claim 5
Dependent Claim
12 words
The combination of claim 2 wherein the spring is a compression spring.
Claim 6
Dependent Claim
29 words
The combination of claim 1 wherein the slots in the frame contain noise reducing grommets with pockets wherein the disc like end portions of the bracket arms are received.
Claim 7
Dependent Claim
12 words
The combination of claim 5 wherein the grommets are deformable rubber parts.
Claim 8
Dependent Claim
17 words
The combination of claim 1 wherein the end brackets are single piece stamped out sheet metal parts.
Claim 9
Dependent Claim
20 words
The combination of claim 1 wherein said confining means are screws with heads which overlap the slots in the frame.
Claim 10
Dependent Claim
18 words
The combination of claim 1 wherein said confining means are plates which overlap the slots in the frame.
References Cited (Backward Citations)
US3041023A
Cited
US3563196A
Cited
US3739735A
Cited
US3983429A
Cited
DE2819806A1
Cited
US4240368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-09-20 | 1986-03-22 | 1986-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-20 | 1990-03-22 | 1990-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-20 | 1994-03-22 | 1994-09-21 | $7700.00 | Window Closed / Lapsed |