Title:
COUNTERBALANCED WINDOW OPERATORS
Document Type and Number:
WIPO Patent Application WO1992009775
Kind Code:
A3
Abstract:
A counterbalanced operator for a pivoting unit includes a housing 17 and a rotatable drive member mounted in the housing. A first end 29a of arm member 29 is operatively connected to the drive member. A second end of the arm member is operatively connected to the pivoting end of the unit and a torque from the unit is transmitted to the arm member. A crank 33 rotates the drive member. A spring 40 provides for a means for counterbalancing the torque on the arm member. The spring 40 creates a force, the spring operatively connected to the arm member and the spring positioned in the housing. The force is transmitted from the spring to the arm member.
Inventors:
GUHL JAMES C (US)
MARTENS JURGEN R (US)
GINNOW-MERKERT HARTMUT (US)
TOMANEK HARALD (US)
MARTENS JURGEN R (US)
GINNOW-MERKERT HARTMUT (US)
TOMANEK HARALD (US)
Application Number:
PCT/US1991/008958
Publication Date:
July 09, 1992
Filing Date:
November 27, 1991
Export Citation:
Assignee:
ANDERSEN CORP (US)
International Classes:
E04D13/035; E05F1/10; E05F11/16; E05F11/24; (IPC1-7): E05F11/16; E05F1/10; E05F11/02; E05F11/24
Foreign References:
| DE9003179U1 | 1990-05-23 | |||
| US2817511A | 1957-12-24 | |||
| FR2307674A1 | 1976-11-12 | |||
| DE824752C | 1952-01-07 | |||
| FR2270424A1 | 1975-12-05 | |||
| DE607900C | 1935-01-11 | |||
| GB1527723A | 1978-10-11 | |||
| DE9017445U1 | 1991-03-14 |
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