Dogging device for a latch assembly
AssigneeVon Duprin, Inc.
InventorsMarlin D. Austin, Richard B. Cohrs, Jr., Stephen M. Rohrbaugh
Life of this patent
Estimating the term…
Abstract
A dogging device for securing a panic exit and actuation device in an unlatched condition. The dogging device uses a U-shaped spring clip to secure a base plate, a dogging adapter and a dogging hook together. The base plate, dogging adapter and dogging hook are rotated about a common axis by an operator, which can either be a hex shaft or a cylinder adapter operated by a keyed lock, from a disengaged position to an engaged position where the dogging hook engages a control rod of the exit device thereby holding, or dogging, the exit device in an unlatched condition. An over center spring is used to bias the dogging hook into either the engaged or the disengaged position.
Claims25
A dogging device for a latch assembly having a translating latching and unlatching control rod, comprising:
- a dogging hook having a hook portion thereon, the dogging hook being pivotable about an axis between a first position adapted to engage the latching and unlatching control rod and a second position adapted to not engage the latching and unlatching control rod;
- an operator co-axial with the dogging hook axis and engaging the dogging hook;
- a spring biasing the dogging hook in either of the first or second positions;
- and
- an axially extending clip means for axially retaining the operator and the dogging hook.
A dogging device for a latch assembly having a translating latching and unlatching control rod, comprising:
- a dogging adapter comprising a cylindrical body having an axial opening therethrough, and a shoulder portion at one end;
- a dogging plate, the dogging plate having an aperture therein, the dogging adapter extending through the dogging plate aperture;
- a dogging hook having a hook portion thereon, the dogging hook being pivotable about an axis between a first position adapted to engage the latching and unlatching control rod and a second position adapted to not engage the latching and unlatching control rod, the dogging hook engaging the dogging adapter;
- an operator co-axial with the dogging hook axis and engaging the dogging adapter;
- a biasing spring biasing the dogging hook in either of the first or second positions;
- and
- a U-shaped spring clip axially retaining the dogging adapter, the operator and the dogging hook.
A dogging device for a latch assembly having a translating latching and unlatching control rod, comprising:
- a dogging adapter comprising a cylindrical body having an axial opening therethrough, a shoulder portion at one end thereof and an axially extending key on the outside thereof;
- a dogging plate, the dogging plate having an aperture therein and a limiting keyway extending from the aperture for engaging the dogging adapter key and for limiting rotation of the dogging adapter and dogging hook, the dogging adapter extending through the dogging plate aperture;
- a dogging hook having a hook portion thereon, the dogging hook being pivotable about an axis between a first position adapted to engage the latching and unlatching control rod and a second position adapted to not engage the latching and unlatching control rod, the dogging hook engaging the dogging adapter, the dogging hook having an aperture therein and having an engaging keyway extending from the aperture, the dogging adapter extending through the dogging hook aperture, the dogging adapter key engaging the engaging keyway;
- an operator co-axial with the dogging hook axis and engaging the dogging adapter;
- a biasing spring being connected to the dogging plate and the dogging hook, the biasing spring biasing the dogging hook in either of the first or second positions;
- and
- a U-shaped spring clip extending through the dogging adapter aperture and engaging and axially retaining the dogging adapter, the operator and the dogging hook.
Dependencies are inferred from the claim text.