Claims
- 1. A door closer comprising:
- a housing having an elongated cylinder forming a piston chamber, and
- a latching chamber axially disposed relative to said piston chamber,
- a piston reciprocally mounted within said piston chamber,
- a piston rod connected to said piston,
- a compression spring exerting a spring bias on said piston,
- said piston rod extending through said latching chamber,
- a latching member and an associated recoil spring loosely mounted on said piston rod within said latching chamber,
- and an arming device mounted on said housing and extending into said latching chamber,
- said arming device being readily shiftable between an armed position and an unarmed position,
- said arming device in the armed position being disposed to be engaged by said latching member to effect automatic actuation of said latching member to arrest the movement of said piston rod toward a door closing position.
- 2. A door closer as defined in claim 1 and including a means for exerting a bias on said arming device for maintaining said arming device in either the armed or unarmed position.
- 3. A door closer as defined in claim 1 and including a dampening means acting on said arming device to minimize any shocking imparted to the arming device upon the latching of the door.
- 4. A door closer as defined in claim 1 wherein said arming device comprises a lever pivotally connected to said housing.
- 5. A door closer as defined in claim 1 wherein said arming device comprises a slide slidably mounted on said housing.
- 6. A door closer as defined in claim 5 and including means acting on said slide for frictionally retaining said slide in either the armed or unarmed position.
- 7. A door closer as defined in claim 6 and including a dampening means connected to said slide to minimize any shocking during latching.
- 8. A door closer as defined in claim 1 and including means exerting a bias on said arming device for latching said arming device in the unarmed position.
- 9. A door closer as defined in claim 1 wherein said arming device includes:
- a lever pivotally mounted on said housing and extending into said latching chamber between said latching member and said piston chamber,
- a trigger pivotally mounted for movement relative to said lever,
- and dampening means disposed between said lever and associated trigger to minimize any shocking imparted on the closure and to prevent any non-latching reactive force to occur during latching.
- 10. A door closer as defined in claim 9 wherein said lever and trigger each include a window that are disposed in alignment,
- and said dampening means includes a spring confined within said aligned windows for minimizing any shocking imparted on said arming device.
- 11. A door closer capable of being optionally operated to effect a normal opening and closing of a door and automatic latching of a door in an opening position at the will of a user comprising:
- an elongated housing having opposed end walls,
- a partition wall disposed within said housing intermediate said end walls to define a piston chamber and a latching chamber,
- a piston reciprocally mounted within said piston chamber,
- a piston rod connected to said piston,
- said piston rod extending through said partition wall and adjacent latching chamber,
- a compression spring disposed within said piston chamber for maintaining a spring bias on said piston,
- a latching device and an associated recoil spring loosely mounted on said piston rod within said latching chamber,
- an arming device mounted on said housing and extending into said latching chamber,
- said arming device being shiftable between an arming position and an unarming position, and a
- means for exerting a bias on said arming device to maintain said arming device in either the armed or unarmed position.
- 12. A door closer as defined in claim 11 wherein said latching device includes a latching washer slidably mounted on said piston rod, whereby said latching washer is actuated by said arming device when in the armed position to effect the arresting of said piston rod in a door opened position.
- 13. A door closer as defined in claim 11 wherein said arming device includes means acting on said arming device for dampening any shocking occurring during latching and to prevent any unintentional non-latching due to any reactive reverse shocking.
- 14. A door closer as defined in claim 11 wherein said arming device includes a lever pivotally mounted on said housing and extending into said latching chamber for pivoting between an armed position and an unarmed position.
- 15. A door closer as defined in claim 14 and including a dampening means acting on said lever to minimize any shocking during latching.
- 16. A door closer as defined in claim 15 and including a trigger associated with said lever for pivoting therewith to the armed position and whereby said trigger pivots relative to said lever to effect the actuation of said latching device.
- 17. A door closer as defined in claim 16 and said dampening means including a dampening spring carried by said lever and trigger to absorb any shocking during latching of the door.
- 18. A door closer as defined in claim 17 and said lever including a camming surface, and said biasing means includes a spring bearing on said camming surface.
- 19. A door closer as defined in claim 11 wherein said housing includes a slotted opening to said latching chamber,
- and said arming device includes a slide having a slide body disposed within said latching chamber,
- a stem connected to said slide body projecting through said slotted opening, and
- a button cap connected to the extended end of said stem,
- and a biasing means including a spring disposed about said stem for exerting a bias on said slide for maintaining said slide in the armed or unarmed position,
- said slide being shiftable between an armed and unarmed position within said latching chamber.
- 20. A door closer as defined in claim 19 wherein said latching device comprises a latching washer slidably mounted on said piston rod between said partition wall and said associated recoil spring.
- 21. A door closer as defined in claim 20 and including a dampening means interposed between said slide body and said latching device.
- 22. A door closer as defined in claim 11 wherein said arming device comprises:
- a lever pivotally mounted on said housing and extending into said latching chamber and shiftable between an armed position and an unarmed position,
- a spring for normally biasing said lever toward the armed position,
- means for resisting the force of said biasing spring for maintaining said lever in the unarmed position whereupon the release of said resistance means effects the shifting of said arming lever to the armed position.
- 23. A door closer as defined in claim 22 wherein said latching device comprises a latching washer slidably disposed on said piston rod between said recoil spring and the end wall of said latching chamber.
- 24. A door closer as defined in claim 23 and including a dampening means interposed between said lever and said latching device within said latching chamber.
- 25. A door closer as defined in claim 24 wherein said dampening means includes a spring carried on said lever disposed to be engaged by said latching device when said lever is in the armed position to absorb any shocking occurring during latching of the door and to prohibit any unintentional non-latching reactive force.
RELATED APPLICATIONS
This application relates to and is a continuation in part application of my co-pending application Ser. No. 08/555,730 filed Nov. 9, 1995 for Door Closers With Automatic Latching And/Or Delayed Action, which is a continuation-in-part application of my application Ser. No. 547,921 filed Oct. 25, 1995, now U.S. Pat. No. 5,630,248 granted May 20, 1997.
This application also relates to Disclosure Document No. 420001 filed May 23, 1997.
US Referenced Citations (15)
Continuation in Parts (2)
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Number |
Date |
Country |
Parent |
555730 |
Nov 1995 |
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Parent |
547921 |
Oct 1995 |
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