Patent US4522661A successfully refreshed from Google Patents.
Patent US3612414A successfully refreshed from Google Patents.
US3612414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coffee mill
Assignee: Kenwood Manufacturing Woking Ltd
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Filing: 1970-04-10
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Granted: 1971-10-12
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Expires: 1990-04-10
Abstract
Abstract A domestic appliance, such as a coffee mill, comprising a fixed casing within which a spring is positioned to support an axially movable drum. A shaft to which a cutter is attached, is rotatably mounted in a floor of the drum. The spring serves to hold the shaft out of engagement with a drive motor coupling. The drum is provided with a lid which preferably is lockable to the casing. When the lid is properly in place the force exerted by the spring is overcome and the drum and thereby the shaft are depressed so that the shaft engages the drive motor coupling.
Inventors
- 👤 James Michael Nevison
- 👤 Ronald Leslie Smallbone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:48
CPC Classifications
A; A47; A47J; A47J19/00; A47J19/02; A47J42/00; A47J42/22; A47J42/26; A47J42/38; A47J42/46; A47J42/56
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
112 words
A domestic appliance comprising: a casing, a drum axially slidable in said casing, a floor of the drum, a driven shaft rotatably mounted in said floor, an end of the driven shaft remote from said drum; a coupling member on said end; an open end to said drum remote from said floor, resilient means disposed between the drum and the casing ans which is effective to urge said drum and said driven shaft towards said open end, a lid for the drum positionable to close said open end and effective to urge the drum into the casing so that said coupling member is brought into engagement with a cooperating external coupling member.
Claim 2
Dependent Claim
112 words
A domestic appliance comprising: a casing, a drum axially slidable in said casing, a floor of the drum, a driven shaft rotatably mounted in said floor, an end of the driven shaft remote from said drum; a coupling member on said end; an open end to said drum remote from said floor, resilient means disposed between the drum and the casing ans which is effective to urge said drum and said driven shaft towards said open end, a lid for the drum positionable to close said open end and effective to urge the drum into the casing so that said coupling member is brought into engagement with a cooperating external coupling member.
Claim 3
Dependent Claim
17 words
A domestic appliance as claimed in claim 1, in which the lid is lockable to the casing.
Claim 4
Dependent Claim
52 words
A domestic appliance as claimed in claim 2, in which the lid fits over the casing, and further comprising at least two spaced-apart bayonet recesses in the lid and at least two lugs on the casing which are shaped to be received in the recesses to lock the lid to the casing.
Claim 5
Dependent Claim
54 words
A domestic appliance as claimed in claim 2, in which the lid fits within the casing but over the drum, and further comprising at least two spaced-apart lugs on the lid and at least two bayonet recesses in the casing which are disposed to receive the lugs to lock the lid to the casing.
Claim 6
Dependent Claim
38 words
A domestic appliance as claimed in claim 1, further comprising an abutment of the casing disposed beneath said drum floor and in which said resilient means comprises a coil spring disposed between said abutment and said drum floor.
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |