Spring adjustment indicator for a door closure

Patent metadata

Field	Value
Publication number	US-10329820-B2
Application number	US-201415033665-A
Country	US
Kind code	B2
Filing date	Oct 30, 2014
Priority date	Nov 1, 2013
Publication date	Jun 25, 2019
Grant date	Jun 25, 2019

Abstract

A spring force indicator for a door closure having a spring force adjuster comprises a drive wheel coupled to the spring force adjuster for rotation therewith and a driven wheel. The driven wheel includes a disc and a post extending from the disc, the post being disposed in a bore formed in a front surface of the door closure and adapted to engage the drive wheel for rotation therewith. A cover being disposed on the end of the door closure and configured to cover the drive wheel and the driven wheel. The cover includes a sidewall, a central aperture for receiving the spring force adjuster, a second aperture disposed between the central aperture and the sidewall, and second indicia disposed around the second aperture. The disc includes first indicia visible through the second aperture which cooperates with the second indicia to indicate a measure of spring force.

First claim

The invention claimed is:

1. A spring force indicator for a door closure having a spring force adjuster, the spring force indicator comprising:
a drive wheel coupled to the spring force adjuster for rotation therewith;
a driven wheel having a disc and a post extending from the disc, the post being disposed in a bore formed in a front surface of the door closure and adapted to engage the drive wheel for rotation therewith, the disc including first indicia; and
a cover having a base wall and a cylindrical sidewall depending from the base wall, the cover being disposed on the end of the door closure and configured to cover the drive wheel and the driven wheel, the cover including a central aperture for receiving the spring force adjuster, a second aperture disposed between the central aperture and the sidewall, and second indicia disposed around the second aperture, the first indicia being visible through the second aperture, the first indicia cooperating with the second indicia to indicate a measure of spring force.

2. The spring force indicator of claim 1 wherein the drive wheel includes at least one gear tooth and the driven wheel includes a plurality of gear teeth.

3. The spring force indicator of claim 1 wherein the first indicia includes an arrow.

4. The spring force indicator of claim 1 wherein the second indicia includes a plurality of numbers indicating an ANSI force.

5. A spring force indicator for a door closure having a spring force adjuster, the spring force indicator comprising:
a drive wheel coupled to the spring force adjuster for rotation therewith;
a driven wheel including a disc and a post extending from the disc, the post being disposed in a recess formed in a surface of the door closure, the disc engaging the drive wheel for rotation therewith; and
a cover disposed to cover the surface, the cover including a central aperture for receiving the spring force adjuster and a second aperture providing visual access to the driven wheel, the second aperture bounded by the cover and positioned intermediate the central aperture and an outer edge of the cover, the driven wheel cooperating with the cover to indicate an amount of spring force applied by the spring force adjuster, wherein rotation of the driven wheel indicates a change in a spring force in response to rotation of the spring force adjuster.

6. The spring force indicator of claim 5 wherein the drive wheel includes at least one gear tooth and the driven wheel includes a plurality of gear teeth.

7. The spring force indicator of claim 5 wherein the cover includes a plurality of numbers surrounding the second aperture.

8. The spring force indicator of claim 7 wherein the driven wheel includes an arrow that points to one of the plurality of numbers, the arrow pointing to another of the plurality of numbers in response to rotation of the spring force adjuster.

9. The spring force indicator of claim 5 wherein the cover includes indicia for indicating a direction of rotation of the spring force adjuster to increase or decrease the spring force of a spring in the door closure.

10. The spring force indicator of claim 5 , wherein the driven wheel includes a non-numeric visual indicator indicating the change in the spring force in response to rotation of the spring force adjuster.

11. The spring force indicator of claim 10 , wherein the non-numeric visual indicator comprises an arrow.

12. A spring force indicator for a door closure having a spring force adjuster, the spring force indicator comprising:
a drive wheel coupled to the spring force adjuster for rotation therewith;
a driven wheel including a disc and a post extending from the disc, the post being disposed in a recess formed in a surface of the door closure, the disc engaging the drive wheel for rotation therewith; and
a cover disposed to cover the surface, the cover including a central aperture for receiving the spring force adjuster, a second aperture providing visual access to the driven wheel, and a plurality of numbers surrounding the second aperture, the driven wheel cooperating with the cover to indicate an amount of spring force applied by the spring force adjuster, wherein rotation of the driven wheel indicates a change in a spring force in response to rotation of the spring force adjuster, the drive wheel including an arrow that points to one of the plurality of numbers, the arrow pointing to another of the plurality of numbers in response to rotation of the spring force adjuster.

13. A spring force indicator for a door closure having a spring force adjuster positioned in a housing of the door closure, the spring force indicator comprising:
a tool engagement portion accessible from an exterior of the housing of the door closure, the tool engagement portion being operatively coupled to the spring force adjuster to vary a spring force of the spring force adjuster through a rotation of the tool engagement portion;
a rotatable indicator operatively coupled to the tool engagement portion, the rotatable indicator having a first indicia visible from the exterior of the housing of the door closure independent of an orientation of the rotatable indicator relative to the housing, the orientation of the first indicia being altered in response to the rotation of the tool engagement portion; and
a plurality of second indicia visible from the exterior of the housing of the door closure, the plurality of second indicia being spaced about the rotatable indicator, wherein a first orientation of the first indicia relative to the plurality of second indicia indicates a first spring force setting of the spring force adjuster and a second orientation of the first indicia relative to the plurality of second indicia indicates a second spring force setting of the spring force adjuster.

14. The spring force indicator of claim 13 , wherein the tool engagement portion is accessible through a first end of the housing and the first indicia of the rotatable indicator is provided on the first end.

15. The spring force indicator of claim 13 , wherein both the tool engagement portion and the rotatable indicator are visible when the exterior of the housing is viewed from a first direction.

Assignees

• Best Access Solutions Inc
• Dormakaba Usa Inc

Inventors

• Hickman Chad A

Classifications

• E05F3/10

  with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction · CPC title

• E05F3/22 Primary

  Additional arrangements for closers, e.g. for holding the wing in opened or other position · CPC title

• E05F3/00

  Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices (construction of non-pneumatic or non-liquid braking devices E05F5/00; friction devices in hinges E05D11/08) · CPC title

• E05F1/00

  Closers or openers for wings, not otherwise provided for in this subclass · CPC title

• E05Y2201/492

  Fixed Constructions · mapped topic