A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Chain winder for a window or door
The present invention relates to a chain winder which has a casing, a chain housed at least partially within the casing and extension means operable to cause the chain to extend out from the casing and also to retract back into the casing. The chain winder also includes a clutch mechanism which is operable to allow the chain to be extended out from the casing, or retracted back into the casing, without operating the extension means.
Chain winder for a window or door
The present invention relates to a chain winder which has a casing, a chain housed at least partially within the casing and extension means operable to cause the chain to extend out from the casing and also to retract back into the casing. The chain winder also includes a clutch mechanism which is operable to allow the chain to be extended out from the casing, or retracted back into the casing, without operating the extension means.
Chain winder for a window or door
POTTS MARTIN CHARLES (author) / JEFFREY CRAIG ROBERT (author)
2016-11-17
Patent
Electronic Resource
English
IPC:
E05F
DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION
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Vorrichtungen zum Bewegen der Flügel in die Offen- oder Schließstellung