US3691407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toy electric power tool
Assignee: Robert Bosch GmbH
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Filing: 1970-11-17
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Granted: 1972-09-12
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Expires: 1990-11-17
Abstract
Abstract A toy device which is a full-size replica of an electric power tool, particularly of a portable electric drill. Its housing is at least partially transparent to permit observation of the assembled parts and/or the operation of its motor which is connectable only to a source of low-voltage current. The tool spindle of the toy device can carry a chuck, a gear, a grinding wheel, a pulley or it can be connected to another torque transmitting or receiving component, for example, to the driven part of another toy device such as a toy saw, a toy grinder, a toy fan or the like. The housing of the toy device carries markings to facilitate the laying of conductors. When taken apart, the components of the toy device are stored in the compartments of a box.
Inventors
- 👤 Erich Klett
- 👤 Kurt Paule
- 👤 Alfred Hettich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:42
CPC Classifications
H; H02; H02K; H02K23/00; B; B23; B23B; B23B45/00; B23B45/02; H02K7/00; H02K7/14; H02K7/145
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
81 words
A toy device constituting an imitation of an electric power tool and consisting of a plurality of readily separable and reassembleable components, said device comprising at least one current consuming unit arranged to be operated at low voltage, said unit including an electric motor having brush holder means including sleeve means, said sleeve means having transverse holes for insertion of foreign objects during assembly of the toy device to constitute retainers of said brush means against the action of spring bias.
Claim 2
Dependent Claim
81 words
A toy device constituting an imitation of an electric power tool and consisting of a plurality of readily separable and reassembleable components, said device comprising at least one current consuming unit arranged to be operated at low voltage, said unit including an electric motor having brush holder means including sleeve means, said sleeve means having transverse holes for insertion of foreign objects during assembly of the toy device to constitute retainers of said brush means against the action of spring bias.
Claim 3
Dependent Claim
78 words
A toy device constituting an imitation of an electric power tool and comprising at least one current consuming unit, arranged to be operated at low voltage, said device consisting of a plurality of readily separable and reassembleable components comprising a housing consisting of a pair of substantially mirror-symmetrical shells and a plurality of rotatable components in said housing, said rotatable components being rotatably supported in said housing in a plurality of complementary bearing halves integral with said shells.
Claim 4
Dependent Claim
78 words
A toy device constituting an imitation of an electric power tool and comprising at least one current consuming unit, arranged to be operated at low voltage, said device consisting of a plurality of readily separable and reassembleable components comprising a housing consisting of a pair of substantially mirror-symmetrical shells and a plurality of rotatable components in said housing, said rotatable components being rotatably supported in said housing in a plurality of complementary bearing halves integral with said shells.
Claim 5
Dependent Claim
61 words
A toy device as defined in claim 2, wherein said current consuming unit comprises an electric motor having a rotor shaft constituting one of said rotatable components which further comprise an output shaft and rotary gear transmission means between said rotor shaft and said output shaft, said shafts and said gear transmission means being rotatably supported in said complementary bearing halves.
Claim 6
Dependent Claim
82 words
A toy device as defined in claim 3, wherein said gear transmission means comprises a pinion integral with one end of said rotor shaft, a gear fixed to one end of said output shaft, and a pair of integral gears respectively meshing with said pinion and said gear on said output shaft and mounted on an additional shaft parallel to said rotor shaft and said output shaft, said additional shaft being rotatably supported on said complementary bearing halves integral with said shells.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |