US3787924A - Automatic door closer with substantially prism-shaped housing - Google Patents

Automatic door closer with substantially prism-shaped housing Download PDF

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Publication number
US3787924A
US3787924A US00324518A US3787924DA US3787924A US 3787924 A US3787924 A US 3787924A US 00324518 A US00324518 A US 00324518A US 3787924D A US3787924D A US 3787924DA US 3787924 A US3787924 A US 3787924A
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US
United States
Prior art keywords
housing
housing means
bore
cylindrical portion
combination
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00324518A
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English (en)
Inventor
D Jentsch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dorma Baubeschlag GmbH and Co KG
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Dorma Baubeschlag GmbH and Co KG
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Filing date
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Application filed by Dorma Baubeschlag GmbH and Co KG filed Critical Dorma Baubeschlag GmbH and Co KG
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Publication of US3787924A publication Critical patent/US3787924A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/22—Additional arrangements for closers, e.g. for holding the wing in opened or other position
    • E05F3/227—Additional arrangements for closers, e.g. for holding the wing in opened or other position mounted at the top of wings, e.g. details related to closer housings, covers, end caps or rails therefor
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/10—Covers; Housings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/26—Form or shape
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors

Definitions

  • An automatic door closer includes a substantially prism-shaped housing adapted to be attached to the exterior of the upper edge of a door or a door frame.
  • the housing is formed with a cylindrical bore in which a spring acting as energy storing means and a damping arrangement including a piston axially movable in the bore are located.
  • the housing comprises a cylindrical portion with an outer substantially cylindrical surface coaxial with the cylindrical bore and substantially parallel plane top and bottom walls extending. along the cylindrical portion integral therewith and having end edges located in two parallel planes normal to the top and bottom walls.
  • a cover sheet is connecEd to those end edges which, in the attached position of the door closer, face away from the door or the door frame to which the housing is attached.
  • the present invention relates to an automatic door closer in which the housing is substantially in the shape of an elongated prism to beattached in substantially horizontal position to the exterior of the upper end of a door or door frame.
  • Such automatic door closers include a cylindrical bore axially extending through the housing in which a spring acting as an energy storing means as well as a damping arrangement including a piston movable in axial direction of the bore are located.
  • the closer shaft of this known door closer is provided with a pinion meshing with a rack fixed to the damping piston and axially mobable with the latter.
  • the face of the elongated housing of known doorclosers of this type which face away from the door or the door frame to which the closer housing is attached is substantially plane, which gives the housing a neat appearance, but which requires proper finishing of this housing face. Furthermore, this known prism-shaped housing requires a relatively large amount of material for its manufacture.
  • housings of the aforementioned type on the surface thereof which abuts against the door or the door frame, shallow recesses to assure a proper abutment of the housing onto the surface of the door or the door frame, but the saving of material, assuming the housing is formed from a casting, obtained by such shallow recesses is relatively small.
  • the housing of the automatic door closer is provided with a cylindrical axially extending bore adapted to receive a spring acting as energy storing means and damping means with a piston axially movable in the bore and the housing comprises a cylindrical portion with an outer substantially cylindrical surface substantially coaxial with the bore and a pair of substantially plane wall portions extending in the mounted position of the door closer in substantially horizontal direction integrally cast with the cylindrical portion and having end edges respectively located in a pair of spaced planes substantially .normal to the plane wall portions.
  • the distance between the pair of the aforementioned planes is preferably slightly greater than the diameter of the outer surface of the cylindrical wall portion and the housing includes also a cover sheet removably attached to those two end edges of the plane wall portions which. in the mounted position of the door closer. face away from the member to which the housing is attached.
  • a housing ofthe aforementioned kind it is possible to form the wall thickness of the housing exclusively in accordance with the stress imparted thereto substantially independent of the outer shape of the housing, and the visible face of the housing, in the mounted position of the latter, can be formed by a relatively thin sheet metal having the desired surface quality. In this way the necessary material for forming the housing can be greatly reduced as well as the necessary machining to give the housing the proper appearance and to assure proper abutment of the housing on the door or the door frame on which the housing has to be mounted.
  • the housing preferably includes a plurality of bosses inwardly of and integral with the aforementioned plane wall portions on opposite sides of the cylindrical portion and respectively formed with bores therethrough for attaching the housing to the door or the door frame.
  • the housing includes further reinforcing ribs extending transversely to the plane wall portions on that side of the cylindrical portion which, in the mounted position of the door closer, faces the door or the door frame to which the housing is to be attached.
  • FIG.1 is a perspective view of the door closer according to the present invention showing the cover sheet displaced in axial direction from the actual housing;
  • FIG. 2 is a cross section taken along the line ll-ll of FIG. 3 or 4;
  • FIG. 3 is a front view of the housing with the cover sheet removed.
  • FIG. 4 is a rear view of the housing.
  • the housing 10 may be attached exteriorally to the door frame and the free end of the linkage means 12 to the-upper edge of the door.
  • the housing 10 is formed with an axially extending cylindrical bore therethrough, not shown in the drawing, and a spring, preferably a coil-compression spring, is located in the axial bore abutting with one end against a piston axially movable in this bore.
  • the closure shaft is provided with a pinion fixedthereto for rotation therewith, and a piston rod connected to the piston is formed in part as a rack meshing with the pinion so that during turning of the door to an open position the piston is moved in axial direction thereby compressing the spring, which therefore forms an energy storing means,
  • the housing of the door closer comprises a cylindrical portion 13 with an outer cylindrical surface substantially coaxial with the axis of the aforementioned bore, and a pair of substantially parallel plane wall portions 14 and 15 extending in the mounted position of the door closed in substantially horizontal direction and being integral with the cylindrical portion 13.
  • the wall portions 14 and 15 have end edges respectively located in a pair of spaced planes substantially normal to the parallel wall portions 14 and 15, and the distance between the pair of planes in which the aforementioned end edges are located is preferably slightly greater than the diameter of the outer surface of the cylindrical portion 13.
  • a plurality of bosses l8 and 19 are formed inwardly of the faces of the wall portions 14 and 15 which face each other in the space between the aforementioned inner faces of the wall portions 14 and 15 and the outer surface of the cylindrical portion 13.
  • the bosses 18 and 19 respectively located on the rear and front sides of the housing are aligned with each other in planes normal to the axis of the cylindrical bore through the housing and they are formed with bores therethrough adapted to received screws by means of which the housing may be connected to the door or the door frame. These bores are preferably counter-sunk at the front side of the housing, as indicated in FIG. 3 so that the heads of the screws will not protrude beyond the front face of the housing.
  • A- plurality of reinforcing ribs 20 are provided between transversely aligned bosses 19 on the rear side of the housing, as shown in FIG. 4, and this rear side may also be provided with additional cross ribs 21 which form additional abutment faces on the rear side of the housing.
  • the housing includes further a pair of end walls 16 and 17 integral with the wall portions 14 and 15 and normal thereto.
  • the aforementioned cylindrical bore extending axially through the housing extends at least through one, and preferably through both, of the aforementioned end walls and the ends of the bore are closed by plugs 22, which are preferably in the form of a screw plugs threadedly connected to correspondingly threaded ends of the bore in the end walls, as shown in FIG. 1 at the right end of the housing.
  • the closer housing 10 which appears in mounted position as a prism-shaped housing is covered at the front side thereof with a cover sheet 11, shown in FIG. 1 in withdrawn'position, which covers the various recesses formed in the housing.
  • the cover sheet 11, which is preferably formed of sheet metal, may be slidingly arranged in dovetail grooves formed at the left end edges, as viewed in FIG. 2, of the parallel wall portions 14 and 15 of the housing.
  • a throttle bore in which an adjustable throttle member is located provides communication between portions of the cylindrical bore to opposite sides of the pis ton movable therein,and the wall portion in which the throttle bore is located is indicated at 23 in FIG. 3 of the drawing. whereas the outer end of the throttle member for adjusting the flow of air through the throttle bore is indicated at 24 in FIG. 1.
  • the above-mentioned closure shaft extends in vertical direction through the housing and with opposite ends slightly beyond the outer surfaces of the wall portions 14 and 15.
  • the linkage means 12 is connected to the upper end of the closure shaft, where as the lower 0 end is covered by a removable cap 25 shown in FIG. 1.
  • a combination comprising housing means and linkage means connected to said housing means, one of said means being adapted to be attached to the exterior ofa door member and the other of said means to a frame member, said housing means being provided with a cylindrical bore adapted to receive a spring acting as energy storing means and damping means including a piston axially movable in said bore, said housing means comprising a cylindrical portion with an outer substantially cylindrical surface substantially coaxial with the axis of said bore; and a pair of substantially parallel plane wall portions extending in the mounted position of the door closer in substantially horizontal direction-,integral with said cylindrical portion andhaving end edges respectively located in a pair of spaced planes substantially normal to said parallel wall portions.
  • said housing means includes a pair of end walls integral with said cylindrical portion and said plane wall portions and located respectively in planes normal to said plane wall portions.
  • said housing means includes a plurality of bosses inwardly of andintegral with said plane wall portions on opposite sides of said cylindrical portion and respectively formed with bores therethrough for attaching said housing means.
  • bosses are aligned in pairs in a plurality of planes extending normal to the axis of said bore, and including reinforcing ribs extending between said aligned bosses on that side of said cylindrical portion which, in the mounted position of the door closer, faces the member to which said housing means is attached.
  • said housing means includes a cover sheet removably attachable to said housing means in the region of those two end edges of said plane wall portions which, in the

Landscapes

  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Wing Frames And Configurations (AREA)
US00324518A 1972-01-18 1973-01-17 Automatic door closer with substantially prism-shaped housing Expired - Lifetime US3787924A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722202084 DE2202084A1 (de) 1972-01-18 1972-01-18 Selbsttaetiger tuerschliesser

Publications (1)

Publication Number Publication Date
US3787924A true US3787924A (en) 1974-01-29

Family

ID=5833214

Family Applications (1)

Application Number Title Priority Date Filing Date
US00324518A Expired - Lifetime US3787924A (en) 1972-01-18 1973-01-17 Automatic door closer with substantially prism-shaped housing

Country Status (6)

Country Link
US (1) US3787924A (tr)
DE (1) DE2202084A1 (tr)
FR (1) FR2168754A5 (tr)
GB (1) GB1400661A (tr)
IT (1) IT971936B (tr)
NL (1) NL7217194A (tr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50101339U (tr) * 1974-01-24 1975-08-21
US4086681A (en) * 1976-06-22 1978-05-02 Yoshitaka Nakanishi Door closer
US4231134A (en) * 1978-04-20 1980-11-04 Casma Di V. Marinoni & Figli Automatic door closing arrangement
US5497533A (en) * 1994-07-28 1996-03-12 Vandal Proof Mfg. Inc. Surface mounted door closer housing resistant to vandalism
US20070186376A1 (en) * 2003-08-22 2007-08-16 Dorma Gmbh + Co. Kg Floor spring
EP2039862A2 (de) * 2007-09-24 2009-03-25 Eco Schulte GmbH & Co. Kg Beidseitig montierbarer Türschließer
US8225458B1 (en) 2001-07-13 2012-07-24 Hoffberg Steven M Intelligent door restraint
US20120227326A1 (en) * 2009-11-13 2012-09-13 Matthias Drux Covering For A Door Operator

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4002889C5 (de) * 1990-02-01 2005-11-10 Geze Gmbh Türschließer
FR2712022B1 (fr) * 1993-11-05 1995-12-08 Seva Moyen, procédé de fixation d'un ferme-porte dans un linteau et utilisation d'un closoir pour former le linteau.
DE19838557C1 (de) 1998-08-25 2000-05-04 Dorma Gmbh & Co Kg Türschließer
DE10023761B4 (de) * 2000-05-15 2015-12-24 Geze Gmbh Aufliegender Türantrieb

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2082455A (en) * 1934-02-19 1937-06-01 Norton Lasier Company Door closing and checking device
US2909801A (en) * 1957-07-01 1959-10-27 Oscar C Rixson Company Door closer
US3149366A (en) * 1960-10-18 1964-09-22 Republic Industries Concealed overhead door closer
US3188682A (en) * 1961-02-27 1965-06-15 Yale & Towne Inc Mounting for door closer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2082455A (en) * 1934-02-19 1937-06-01 Norton Lasier Company Door closing and checking device
US2909801A (en) * 1957-07-01 1959-10-27 Oscar C Rixson Company Door closer
US3149366A (en) * 1960-10-18 1964-09-22 Republic Industries Concealed overhead door closer
US3188682A (en) * 1961-02-27 1965-06-15 Yale & Towne Inc Mounting for door closer

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5234208Y2 (tr) * 1974-01-24 1977-08-04
JPS50101339U (tr) * 1974-01-24 1975-08-21
US4086681A (en) * 1976-06-22 1978-05-02 Yoshitaka Nakanishi Door closer
US4231134A (en) * 1978-04-20 1980-11-04 Casma Di V. Marinoni & Figli Automatic door closing arrangement
US5497533A (en) * 1994-07-28 1996-03-12 Vandal Proof Mfg. Inc. Surface mounted door closer housing resistant to vandalism
US9121217B1 (en) 2001-07-13 2015-09-01 Steven M. Hoffberg Intelligent door restraint
US11187022B1 (en) 2001-07-13 2021-11-30 Steven M. Hoffberg Intelligent door restraint
US8225458B1 (en) 2001-07-13 2012-07-24 Hoffberg Steven M Intelligent door restraint
US9995076B1 (en) 2001-07-13 2018-06-12 Steven M. Hoffberg Intelligent door restraint
US9045927B1 (en) 2001-07-13 2015-06-02 Steven M. Hoffberg Intelligent door restraint
US20070186376A1 (en) * 2003-08-22 2007-08-16 Dorma Gmbh + Co. Kg Floor spring
EP2039862A2 (de) * 2007-09-24 2009-03-25 Eco Schulte GmbH & Co. Kg Beidseitig montierbarer Türschließer
EP2039862A3 (de) * 2007-09-24 2012-07-04 Eco Schulte GmbH & Co. Kg Beidseitig montierbarer Türschließer
US20120227326A1 (en) * 2009-11-13 2012-09-13 Matthias Drux Covering For A Door Operator

Also Published As

Publication number Publication date
FR2168754A5 (tr) 1973-08-31
GB1400661A (en) 1975-07-23
DE2202084A1 (de) 1973-08-02
NL7217194A (tr) 1973-07-20
IT971936B (it) 1974-05-10

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