DK367383A - PORT SECURITY - Google Patents

PORT SECURITY Download PDF

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Publication number
DK367383A
DK367383A DK367383A DK367383A DK367383A DK 367383 A DK367383 A DK 367383A DK 367383 A DK367383 A DK 367383A DK 367383 A DK367383 A DK 367383A DK 367383 A DK367383 A DK 367383A
Authority
DK
Denmark
Prior art keywords
axle
bracket plate
door
ratchet wheel
spring
Prior art date
Application number
DK367383A
Other languages
Danish (da)
Other versions
DK149533B (en
DK367383D0 (en
DK149533C (en
Inventor
Peter Damgaard Nielsen
Original Assignee
Nassau Door As
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nassau Door As filed Critical Nassau Door As
Priority to DK367383A priority Critical patent/DK149533C/en
Publication of DK367383D0 publication Critical patent/DK367383D0/en
Publication of DK367383A publication Critical patent/DK367383A/en
Publication of DK149533B publication Critical patent/DK149533B/en
Application granted granted Critical
Publication of DK149533C publication Critical patent/DK149533C/en

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  • Gates (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

In vertical lifting doors comprising an axle 11 with a wire drum 12 and a door spring 13, there is not in advance any protection which enters into operation if the spring fails. According to the invention, the door spring which stores energy for lifting of the door is pretensioned in such a way that if the spring fails a pawl engages in a ratchet wheel in order to jam the axle. In fixed connection with the axle 11 there is therefore a ratchet wheel 14, and stationary relative to the building in which the door is fitted there is a bracket plate 21, through which the axle 11 passes. The bracket plate 21 bears a pawl 22, which is actuated to engage with the ratchet wheel 14. The bracket plate 21 further bears an auxiliary plate 23, through which the axle 11 passes and which has a limited rotatability relative to the bracket plate 21 by virtue of being fastened to the bracket plate by a pair of bolts 24 passing through a pair of long holes 26 in the bracket plate 21. The auxiliary plate 23 is held pretensioned by the door spring 13 in a position in which the pawl 22 is held disengaged from the ratchet wheel 14 in the normal situation. <IMAGE>
DK367383A 1983-08-12 1983-08-12 SPRING BREAKFAST FOR A LIFT PORT DK149533C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK367383A DK149533C (en) 1983-08-12 1983-08-12 SPRING BREAKFAST FOR A LIFT PORT

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK367383 1983-08-12
DK367383A DK149533C (en) 1983-08-12 1983-08-12 SPRING BREAKFAST FOR A LIFT PORT

Publications (4)

Publication Number Publication Date
DK367383D0 DK367383D0 (en) 1983-08-12
DK367383A true DK367383A (en) 1985-02-13
DK149533B DK149533B (en) 1986-07-14
DK149533C DK149533C (en) 1987-03-30

Family

ID=8125527

Family Applications (1)

Application Number Title Priority Date Filing Date
DK367383A DK149533C (en) 1983-08-12 1983-08-12 SPRING BREAKFAST FOR A LIFT PORT

Country Status (1)

Country Link
DK (1) DK149533C (en)

Also Published As

Publication number Publication date
DK149533B (en) 1986-07-14
DK367383D0 (en) 1983-08-12
DK149533C (en) 1987-03-30

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Legal Events

Date Code Title Description
PBP Patent lapsed