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US3738616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor driven appliance
Assignee: Sunbeam Corp
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Filing: 1969-10-30
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Granted: 1973-06-12
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Expires: 1989-10-30
Abstract
Abstract A motor operated electric appliance having the elements of the motor supported directly on the plastic housing members. The motor field is positioned between two housing members and serves to align the housing members which also support the armature bearings. Air conduit means formed directly in the plastic housing members directs the motor cooling air into the interior of the housing and across the motor for cooling purposes.
Inventors
- 👤 W Copeland
- 👤 W Chambers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:46
CPC Classifications
A; A47; A47J; A47J43/00; A47J43/04; A47J43/07; A47J43/08; A47J43/085; A47J2043/0744
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
120 words
A food blender power unit comprising a motor having an armature which includes an armature shaft, upper and lower frame members supporting said motor, vertically spaced bearings one on each of said frame members journalling said armature shaft extending vertically, a laminated field positioned between said frame members and adjacent to said armature, means on said upper frame member to support a vessel having mixing and blending means drivingly coupled to said motor, locating surfaces formed on said frame members and engaging said laminated field to align each said frame member by its engagement with said laminated field to locate said bearings in axial alignment and to locate said armature and field with a uniform air gap surrounding the armature.
Claim 2
Dependent Claim
120 words
A food blender power unit comprising a motor having an armature which includes an armature shaft, upper and lower frame members supporting said motor, vertically spaced bearings one on each of said frame members journalling said armature shaft extending vertically, a laminated field positioned between said frame members and adjacent to said armature, means on said upper frame member to support a vessel having mixing and blending means drivingly coupled to said motor, locating surfaces formed on said frame members and engaging said laminated field to align each said frame member by its engagement with said laminated field to locate said bearings in axial alignment and to locate said armature and field with a uniform air gap surrounding the armature.
Claim 3
Dependent Claim
58 words
The power unit of claim 1 wherein said frame members form a complete enclosure for said field and armature, assembly means extending between said upper and lower frame members to retain said members in assembled relation, a plurality of resilient supporting members positioned on the bottom of said lower frame member and retained thereon by said assembly means.
Claim 4
Dependent Claim
71 words
The power unit of claim 1 wherein said lower frame member is provided with a plurality of spaced vertically extending projections which engage and support said laminated field, said projections having first surfaces engaging said field in a plane normal to the axis of said armature shaft and second surfaces engaging the sides of said field to position said field in the plane normal to the axis of said armature shaft.
Claim 5
Dependent Claim
48 words
The power unit of claim 3 wherein said engaging surfaces on said projections comprise surfaces positioned at right angles to each other to engage the sides and lower faces of said field, means retaining said field in assembled relation against said projections independently of said upper frame member.
Claim 6
Dependent Claim
48 words
The power unit of claim 3 wherein said upper frame member is formed with downwardly extending locating projections which engage only the sides of said field and position the upper frame member with respect to said field in the plane normal to the axis oF said armature shaft.
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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) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |