US 10,704,310 B1Granted

Door closer power adjustment

AssigneeSchlage Lock Company LLC

InventorsMitchell T. Barbon, Adithya G. Shetty, Paul Koeske, David V. Toloday

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Abstract

An exemplary door closer has an adjustable size and includes a rotatable member operable to adjust the size and an indicator mechanism configured to indicate the current size. The indicator mechanism includes a cover mounted to a housing of the door closer and a dial rotatably mounted to the cover. The dial is engaged with the rotatable member such that the dial rotates in response to rotation of the rotatable member. The cover includes an indicating region, and the dial includes a display surface including indicia relating to the sizes of the door closer. The display surface is non-perpendicular to the rotational axis of the rotatable member. When the door closer has been adjusted to a particular size, indicia relating to the particular size are indicated by the indicating region.

Claims20

Dependent claims

A door closer, comprising:

a housing having a first end and an opposite second end, the housing defining a longitudinal axis extending between the first end and the second end;
a piston mounted in the housing for reciprocal movement along the longitudinal axis, the piston defining a rack;
a pinion rotatably mounted to the housing and engaged with the rack;
an anchor plate mounted in the housing for movement along the longitudinal axis;
a spring captured between the piston and the anchor plate;
an adjustment screw rotatably mounted to the first end of the housing and engaged with the anchor plate such that rotation of the adjustment screw moves the anchor plate along the longitudinal axis to adjust a preloading of the spring;
a cover mounted to the first end of the housing, the cover including a window formed in a radially outer wall thereof;
a dial including a display surface, wherein the display surface is arranged non-perpendicular to the longitudinal axis, wherein the display surface includes at least one indicium relating to the preloading of the spring, and wherein the display surface includes a displayed portion aligned with the window such that the displayed portion is visible via the window;
and
a gear assembly connecting the adjustment screw and the dial such that rotation of the adjustment screw rotates the dial to selectively place the at least one indicium in the displayed portion.

7 more elements

Dependencies are inferred from the claim text.