IT1259631B - Rebound-preventing device for transmitting motion to the rotatable turnstile of a theft-prevention door - Google Patents
Rebound-preventing device for transmitting motion to the rotatable turnstile of a theft-prevention doorInfo
- Publication number
- IT1259631B IT1259631B ITFI920068A ITFI920068A IT1259631B IT 1259631 B IT1259631 B IT 1259631B IT FI920068 A ITFI920068 A IT FI920068A IT FI920068 A ITFI920068 A IT FI920068A IT 1259631 B IT1259631 B IT 1259631B
- Authority
- IT
- Italy
- Prior art keywords
- turnstile
- rebound
- theft
- motor
- preventing device
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000002427 irreversible effect Effects 0.000 abstract 1
Landscapes
- Burglar Alarm Systems (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
A rebound-preventing device for transmitting motion to the rotatable turnstile 1 of a theft-prevention door comprising a first reduction gear 6 and a second reduction gear 10, which can be individually reversed but which as a unit are irreversible transmitting in series the drive torque produced by motor 13 to turnstile 1. Reduction gears 6, 10 are preferably of the endless screw/helicoidal wheel type and have a transmission ratio of between 1:15 and 1:25. Motor 13 is preferably of the direct current type and which senses forces applied to turnstile 1 allowing the latter to increase or decrease its speed of rotation controlled within minimum and maximum limits by a tachymetric dynamo 14 fitted to the motor. <IMAGE>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITFI920068A IT1259631B (en) | 1992-03-17 | 1992-03-17 | Rebound-preventing device for transmitting motion to the rotatable turnstile of a theft-prevention door |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITFI920068A IT1259631B (en) | 1992-03-17 | 1992-03-17 | Rebound-preventing device for transmitting motion to the rotatable turnstile of a theft-prevention door |
Publications (3)
Publication Number | Publication Date |
---|---|
ITFI920068A0 ITFI920068A0 (en) | 1992-03-17 |
ITFI920068A1 ITFI920068A1 (en) | 1993-09-17 |
IT1259631B true IT1259631B (en) | 1996-03-25 |
Family
ID=11350014
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITFI920068A IT1259631B (en) | 1992-03-17 | 1992-03-17 | Rebound-preventing device for transmitting motion to the rotatable turnstile of a theft-prevention door |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1259631B (en) |
-
1992
- 1992-03-17 IT ITFI920068A patent/IT1259631B/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
ITFI920068A1 (en) | 1993-09-17 |
ITFI920068A0 (en) | 1992-03-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19950419 |