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US 6,434,788 B1Granted
Door closer
OwnerErnst Schulteinventor
Life of this patent
Estimating the term…
Abstract
The invention describes a door closer with an energy storage that includes a resisting spring (3), with a closer shaft (1) driven by the resisting spring (3) and with an hydraulic fluid damped damping device (12, 13), whereby the energy storage and the damping device (12, 13) act upon a common closer shaft (1), whereby the resisting spring (3) and the closer shaft (1) are not in contact with the fluid of the damping device (12, 13). In this way a particularly slim housing is possible.
Claims2
A door closer comprising:
- an energy storage means having a resisting spring (3);
- a closer shaft (1);
- a first housing for housing said energy storage means and said closer shaft (1);
- a drive means for connecting said resisting spring (3) and said closer shaft (1), and driving said closer shaft (1);
- a hydraulic fluid-damped damping device;
- a damper shaft (14);
- a second housing (12) for housing said hydraulic fluid-damped damping device said damper shaft (14) comprising;
- an externally oriented, annular, circumferential collar (23) that fits into a ring-shaped groove opening in said first housing (2) and along with said first housing forms a rotary bearing;
- and,
- a connecting means (15) for connecting said hydraulic fluid-damped damping device with said closer shaft (1),
- wherein said energy storage means and said closer shaft (1) are not in contact with the fluid of said fluid-damped damping device, and wherein said second housing (12) is situated to be able to rotate around its middle axis as defined by the axis of said damper shaft (14).
8 more elements
A door closer comprising:
- an energy storage means having a resisting spring (3) comprising:
- a helical spring that is externally enclosed in a sheath (4) wherein the end of said sheath (4) in the direction of the closer shaft (1) forms a connection (8) directed inward that is formed to be a counter bearing for the resisting spring (3);
- a closer shaft (1);
- a first housing for housing said energy storage means and said closer shaft (1);
- a drive means for connecting said resisting spring (3) and said closer shaft (1), and driving said closer shaft (1);
- a hydraulic fluid-damped damping device;
- a damper shaft (14);
- a second housing (12) for housing said hydraulic fluid-damped damping device said damper shaft (14);
- and,
- a connecting means (15) for connecting said hydraulic fluid-damped damping device with said closer shaft (1),
- wherein said energy storage means and said closer shaft (1) are not in contact with the fluid of said fluid-damped damping device, and wherein said second housing (12) is situated to be able to rotate around its middle axis as defined by the axis of said damper shaft (14).
8 more elements
Dependencies are inferred from the claim text.