GB407532A - Improvements in or relating to electric motors - Google Patents
Improvements in or relating to electric motorsInfo
- Publication number
- GB407532A GB407532A GB8855/33A GB885533A GB407532A GB 407532 A GB407532 A GB 407532A GB 8855/33 A GB8855/33 A GB 8855/33A GB 885533 A GB885533 A GB 885533A GB 407532 A GB407532 A GB 407532A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- blades
- contact
- slots
- secured
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
- H02K7/145—Hand-held machine tool
Abstract
407,532. Screw fans. ELECTROFAN GES., 113, Reinickendorferstrasse, Berlin. March 23, 1933, No. 8855. Convention date, Jan. 18. [Class 110 (i).] A small permanent magnet stator motor, more particularly for a pocket fan, occupies the upper portion of a tubular casing which also contains a battery or accumulator for supplying the motor. In the form shown, the. blades 31 are secured in their inoperative position by the flanged margin 22<1> of a ring 22 which is slidable on the casing 1 containing the motor and the battery 6. In this position a contact 17 in the motor circuit rests on an insulator 19, but as the sleeve 22 is moved downwards the blade ends are first released and then contact 17 engages a contact strip 20 secured to the ring 22 to start the motor and cause the blades to fly out to the position shown in Fig. 3. The blades 31, which may be cut from strip steel of curved section, have lugs 32 engaging pivots in slots 33 in a cap 29, these slots being twisted relatively to the axis of rotation. Specification 407,533, [Group XXXV], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE407532X | 1933-01-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB407532A true GB407532A (en) | 1934-03-22 |
Family
ID=6422179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8855/33A Expired GB407532A (en) | 1933-01-18 | 1933-03-23 | Improvements in or relating to electric motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB407532A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2251459A (en) * | 1990-11-27 | 1992-07-08 | Bridisco Ltd | Portable fan |
| GB2405677A (en) * | 2003-09-02 | 2005-03-09 | Hewlett Packard Development Co | Rotor with collapsible fan blade |
-
1933
- 1933-03-23 GB GB8855/33A patent/GB407532A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2251459A (en) * | 1990-11-27 | 1992-07-08 | Bridisco Ltd | Portable fan |
| GB2251459B (en) * | 1990-11-27 | 1994-03-02 | Bridisco Ltd | Portable fan |
| GB2405677A (en) * | 2003-09-02 | 2005-03-09 | Hewlett Packard Development Co | Rotor with collapsible fan blade |
| US7054156B2 (en) | 2003-09-02 | 2006-05-30 | Hewlett-Packard Development Company, L.P. | Fan rotor systems having collapsible fan blades |
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