US2595291A - Door controller - Google Patents
Door controller Download PDFInfo
- Publication number
- US2595291A US2595291A US725178A US72517847A US2595291A US 2595291 A US2595291 A US 2595291A US 725178 A US725178 A US 725178A US 72517847 A US72517847 A US 72517847A US 2595291 A US2595291 A US 2595291A
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- US
- United States
- Prior art keywords
- doors
- conductors
- door
- circuit
- door controller
- 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
Links
- 239000004020 conductor Substances 0.000 description 22
- 238000005096 rolling process Methods 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
Images
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
- E05F15/00—Power-operated mechanisms for wings
- E05F15/40—Safety devices, e.g. detection of obstructions or end positions
- E05F15/42—Detection using safety edges
- E05F15/44—Detection using safety edges responsive to changes in electrical conductivity
-
- 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
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/632—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings
- E05F15/635—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings operated by push-pull mechanisms, e.g. flexible or rigid rack-and-pinion arrangements
-
- 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
- E05F15/00—Power-operated mechanisms for wings
- E05F15/40—Safety devices, e.g. detection of obstructions or end positions
- E05F15/42—Detection using safety edges
-
- 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
- E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
- E05Y2201/43—Motors
- E05Y2201/434—Electromotors; Details thereof
-
- 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
- E05Y2201/60—Suspension or transmission members; Accessories therefor
- E05Y2201/622—Suspension or transmission members elements
- E05Y2201/71—Toothed gearing
- E05Y2201/722—Racks
-
- 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
- E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
- E05Y2400/10—Electronic control
- E05Y2400/20—Electronic control of brakes, disengaging means, holders or stops
-
- 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
- E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
- E05Y2400/65—Power or signal transmission
- E05Y2400/656—Power or signal transmission by travelling contacts
- E05Y2400/658—Power or signal transmission by travelling contacts with current rails
-
- 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
- E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
- E05Y2600/40—Mounting location; Visibility of the elements
- E05Y2600/46—Mounting location; Visibility of the elements in or on the wing
-
- 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
- This invention relates to a door controller especially adapted to the control of large single or double doors.
- Such doors of the sliding or rolling type,u are used extensively in hangers, warehouses, factories and the like.
- One object of the invention is to provide a door control which may be built with a gap between theconductor. trolleys.y Such a gap is of great value for example in airplane hangers so that airplanes having high-standing rudder assemblies can pass through the doorway.
- Another object is to provide a door control which will stop the door almost instantly when the control circuit is closed and the power circuit is broken.
- Another object is to provide a door control in which the conductors are protected frommechanical strain and in which no power wiring ⁇ is attached to the doors.
- Fig. 1 is a front elevation of a double hanger, door and its control according to my inventionA A portion of the left hand door is broken away;
- Fig. 2 is an enlarged detail of Fig. 1 showing a portion of both doors and the arrangement of trolleys and conductors on one of the doors;
- Fig. 3 is a cross section of a door takenon Fig. 2 alongthe line 3--3 thereof;
- Fig. 4 is a cross section of the leading edges of the doors showing the sensitive switch mechanism. The section is taken at any point along the height of the doors;
- Fig. 5 is a schematic diagram of vthe electric circuit employed showingV also some schematic mechanical details of trolley arrangement and motor braking.
- I0 is a doorway which is closed by the multiple rolling doors II and H1 of which sections IIa, IIb, Ilc, IId and Ile and Hal, IIb1, IIc1, Ildi and Iiel are successively disposed toward the meeting leading edges of the doors.
- the meeting place is approximately in the middle of the doorway I0.
- the actual drive of the doors is not shown since it is no part of our invention. While we prefer thatv the doors II be driven by the means shown and described in co-pending application Serial No. 568,909 byted December 9, 1944, now Patent No.- 2,425,016, by Edgar R. Weaver, other drivesmay be substituted. Among those suitable are those described in Patent No. 1,960,860 to E. F.' Allen. The kind of doors suitable for such drives .are those which arrange themselves behind each other when the door is fully open.
- Fig. 1 Also shown in Fig. 1 is a gap I3 over the meeting place of the doors, this gap being created by the discontinuity of an overhead' trolley duct which contains conductors I4 and I4a. Its function has been mentioned. Attached to the leading edges of sections vI Ie and IIe; ⁇ are conductors E5' and Ilia respectively, which are better shown in Fig. 2. The conductors I5 and I5a are slackly supported from chains Iii-and I6a for the purpose of protecting the conductors from 'heavy mechanical strain. L' 1 In order to obviate' the necessity for conductors which would be long enough to allow full traverse of the doors II and IIT, two rolling trolleys I'I and Ila are provided as supports. They run in trolley ducts I8 and I8a, in which there are mounted two wire conductors I4 and Ida (see Figs. 3 and 5).
- the purpose of the conductors I4 and I4a and i5 and I5a is to connect a relay circuit 20 (Fig. 5) with sensitive switches 2
- FIG. 4 shows it, however, so that a clear continuous idea of the structure and operation of our control may be conveyed.
- 22 is a sheet rubber, easily compressible buffer attached to the leading edge of door section IIe. 22a is its companion attached to door section I Ie1. Just below the rubber buiers there are arcuate spring-brass switch members 23 and 23a.
- circuit 20 Upon closure of the sensitive switches 2
- the latter is provided with an automatic electromagnetic brake 30, the circuit 3
- conductor' being: shown in its most extended position.- Since ⁇ the conductor does not have to belong: enough to ⁇ reach across the entire door, it is: consequently not long enough to dragon the ground, ⁇ which would damage its insulation.
- The' minimum. length: of conductor is that which will extend.. across half the gap I3 when. the doors are closed. without any undue, ⁇ tension on ⁇ the condoctor itself or upon the supporting chain It or 16ay thereof..
- circuit. assembly comprising a pair of conductors, a source of low voltage current for energizing said conductors, a switch having at least two separable contact members movable along said conductors, one of said contacts being electrically connected to one of said conductors and the. other of said contacts being electrically connected to said other conductor, a relay having an electromagnet and a pair of contacts actuated thereby, said elemtromagnet being included in the circuit defined by said pair of conductors and saidl separable contacts, a drive motor having an energizing circuit including said contacts of said relay. a brake solenoid having an energizing circuit controlled by said contacts of said relay, the
- ' brake solenoid being a component of an electromagnetic brake and adapted to brake said drive motor when said relay operates to de-energize said. driveA motor;
Landscapes
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Description
May 6, 1952 T. B. RAMsEY ETAL 2,595,291
DOOR CONTROLLER Filed Jan. 50, 1947 v 2 SHEETS-SHEET 1 JNVENToRs, fao/:ms 5 ,esmffy izan/v .f ey
I Y NMa-b May 6, 1952 Filed Jan. 50, 1947 E El T. B. RAMSEY ET AL DOOR CONTROLLER 2 SI-IEETS--SHEET 2 INVENTORJ. 7740/17/75 5t ,P4/)455V Patented May 6, 1952 Thomas B. Ramsey and Eldon S. Gray, Dayton, Ohio Application January 30, 1947, Serial No. 725,178
1 Claim. (Cl. 318-275) (Granted under the y.act of March 3, v1883, as amended April 30, 1928;.370 0. G. 757) The invention described herein may be manufactured and used by or for the. Government for governmental purposes without payment to us of any royalty thereon.
This invention relates to a door controller especially adapted to the control of large single or double doors. Such doors, of the sliding or rolling type,u are used extensively in hangers, warehouses, factories and the like.
Up to the present, no door control has existed, we believe, which would permit a gap in the fixed conductors to be left between the doors of a two-door installation. Nor has it been possible to vstop almost instantly the advance of heavy doors by the closing of a low voltage-lowamperage circuit, brought about by a light pressure on the rubber-buffered leading edges thereof. l One object of the invention is to provide a door control which may be built with a gap between theconductor. trolleys.y Such a gap is of great value for example in airplane hangers so that airplanes having high-standing rudder assemblies can pass through the doorway.
Another object is to provide a door control which will stop the door almost instantly when the control circuit is closed and the power circuit is broken.
Another object is to provide a door control in which the conductors are protected frommechanical strain and in which no power wiring` is attached to the doors.
In the drawings:
Fig. 1 is a front elevation of a double hanger, door and its control according to my inventionA A portion of the left hand door is broken away;
Fig. 2 is an enlarged detail of Fig. 1 showing a portion of both doors and the arrangement of trolleys and conductors on one of the doors;
Fig. 3 is a cross section of a door takenon Fig. 2 alongthe line 3--3 thereof;
Fig. 4 is a cross section of the leading edges of the doors showing the sensitive switch mechanism. The section is taken at any point along the height of the doors; and
Fig. 5 is a schematic diagram of vthe electric circuit employed showingV also some schematic mechanical details of trolley arrangement and motor braking.
Referring to Fig. l, I0 is a doorway which is closed by the multiple rolling doors II and H1 of which sections IIa, IIb, Ilc, IId and Ile and Hal, IIb1, IIc1, Ildi and Iiel are successively disposed toward the meeting leading edges of the doors. The meeting place is approximately in the middle of the doorway I0. The actual drive of the doors is not shown since it is no part of our invention. While we prefer thatv the doors II be driven by the means shown and described in co-pending application Serial No. 568,909 iiled December 9, 1944, now Patent No.- 2,425,016, by Edgar R. Weaver, other drivesmay be substituted. Among those suitable are those described in Patent No. 1,960,860 to E. F.' Allen. The kind of doors suitable for such drives .are those which arrange themselves behind each other when the door is fully open.
Also shown in Fig. 1 is a gap I3 over the meeting place of the doors, this gap being created by the discontinuity of an overhead' trolley duct which contains conductors I4 and I4a. Its function has been mentioned. Attached to the leading edges of sections vI Ie and IIe;` are conductors E5' and Ilia respectively, which are better shown in Fig. 2. The conductors I5 and I5a are slackly supported from chains Iii-and I6a for the purpose of protecting the conductors from 'heavy mechanical strain. L' 1 In order to obviate' the necessity for conductors which would be long enough to allow full traverse of the doors II and IIT, two rolling trolleys I'I and Ila are provided as supports. They run in trolley ducts I8 and I8a, in which there are mounted two wire conductors I4 and Ida (see Figs. 3 and 5).
The purpose of the conductors I4 and I4a and i5 and I5a is to connect a relay circuit 20 (Fig. 5) with sensitive switches 2| and 2Ia located in the leading edges of the doors I I and IIa respectively. These switches are shown in section in Fig. 4 and diagrammatically in Fig. 5. It is to be understood that the left hand part of Fig. 5, i. e. all along the left part gap between the doors, corresponds to the right hand side of the doors, when double doors are used. Such a construction is the preferred form of the invention.
No novelty is claimed for the specific form of sensitive switch employed. Fig. 4 shows it, however, so that a clear continuous idea of the structure and operation of our control may be conveyed. In that figure, 22 is a sheet rubber, easily compressible buffer attached to the leading edge of door section IIe. 22a is its companion attached to door section I Ie1. Just below the rubber buiers there are arcuate spring-brass switch members 23 and 23a.
These are connected to the limbs of conductors I5 and Ilial respectively, the other limbs being connected to conductive bars 24 and 24a which are mounted on insulating strips 25 and 25a. It is evident then that compression of buiiers 22 and 22a, switch members 23 and 23a to an extent that electrical contact is made with bars 24 and 24a will close the sensitive switches.
Upon closure of the sensitive switches 2| and 2| a, circuit 20 is energized from a battery 26 or other source of lowY voltage current. A relay 21 of the spring-pressed type is then energized to break a power circuit 28 in which there is in` eluded the door driving motor 29. The latter is provided with an automatic electromagnetic brake 30, the circuit 3| for which includes a battery 32v which is under control of the relay 21. Therefore when sensitive switches 2| 4and 2 la are open, the power supply 28 may be applied, but when they are closed, the electromagnetic brake 30 is applied to the motor 29, thus stopping the doors immediately. It is to be noted that closing o1" the power circuit 28 by the' relay21 does not setl the doors in motion; a manually controlled switch (not shown) is provided for that purpose.
As the doors roll; it is evident that the trolley carriagesy I7 and Het will be pulled along the trolley conductors, Wand 14a by the sections ile and Hei. of the doors by means of the chains I6 and` 16a respectively. Since the pull will take' place in opposite directions when the doors are opened; and closed, aswingable bracket 33 is pro videdzto insure that" the conductors have enough slack'to-aceommodatethe change in the direction of theA movement. The action of the .bracket during swinging isV shown in dotted line in Fig. 2, the. conductor' being: shown in its most extended position.- Since` the conductor does not have to belong: enough to` reach across the entire door, it is: consequently not long enough to dragon the ground,` which would damage its insulation. The' minimum. length: of conductor is that which will extend.. across half the gap I3 when. the doors are closed. without any undue,` tension on` the condoctor itself or upon the supporting chain It or 16ay thereof..
The invention claimed is:
electric. circuit. assembly: comprising a pair of conductors, a source of low voltage current for energizing said conductors, a switch having at least two separable contact members movable along said conductors, one of said contacts being electrically connected to one of said conductors and the. other of said contacts being electrically connected to said other conductor, a relay having an electromagnet and a pair of contacts actuated thereby, said elemtromagnet being included in the circuit defined by said pair of conductors and saidl separable contacts, a drive motor having an energizing circuit including said contacts of said relay. a brake solenoid having an energizing circuit controlled by said contacts of said relay, the
' brake solenoid. being a component of an electromagnetic brake and adapted to brake said drive motor when said relay operates to de-energize said. driveA motor;
THOMAS B. RAMSEY. ELDON S. GRAY.
REFERENCES CITED The following references are of record in the iile of this patent:
UNITED STATES PATENTS Number Name Date 704,398 Sundh July 8, 1902 851,891 Layman Apr. 30, 1907 1,022,001 Price Apr. 2, 1912 1,041,642 Lindquist Oct. 15, 1912 11,396,757 Hynes Nov. 15, 1921'. 1,496,154Y Forman June' 3, 1924 1,705,406 Hynes et al Mar. l2, 1929 1,735,153 Eouton Nov. 12, 1929 1,745,990 Goldman Feb. 4, 1930 1,793,716 Parvin Feb. 24, 1931 1,932,198 Talen Oct.. 24, 1933 1,942,253 Mattingly et al Jan. 2, 1934 1,952,681 Peele Mar. 27, 1934 2,425,312 Gower Aug. 12, 1947
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US725178A US2595291A (en) | 1947-01-30 | 1947-01-30 | Door controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US725178A US2595291A (en) | 1947-01-30 | 1947-01-30 | Door controller |
Publications (1)
Publication Number | Publication Date |
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US2595291A true US2595291A (en) | 1952-05-06 |
Family
ID=24913470
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US725178A Expired - Lifetime US2595291A (en) | 1947-01-30 | 1947-01-30 | Door controller |
Country Status (1)
Country | Link |
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US (1) | US2595291A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2740856A (en) * | 1952-06-23 | 1956-04-03 | Peelie Company | Low voltage reversing edges |
US2805377A (en) * | 1955-05-03 | 1957-09-03 | Square D Co | Crane hoist motor limit circuit |
US2843690A (en) * | 1956-10-18 | 1958-07-15 | Miller Bros | Safety edge for hangar door |
US3204170A (en) * | 1962-10-01 | 1965-08-31 | Barber Colman Co | Traveling motor door operator |
US5148911A (en) * | 1991-10-31 | 1992-09-22 | Miller Edge, Inc. | Sensing edge switch |
EP0848129A1 (en) * | 1996-12-16 | 1998-06-17 | Snaf Eurl | Automatic gate with an on-board safety system |
WO1999004122A1 (en) * | 1997-07-15 | 1999-01-28 | Geze Gmbh | Automatic door or window installation |
US20020113602A1 (en) * | 2001-02-22 | 2002-08-22 | Hidenori Ishihara | Pinched object detection apparatus for detecting object pinched by automatic door |
US20220195780A1 (en) * | 2019-05-24 | 2022-06-23 | Assa Abloy Entrance Systems Ab | A sliding door assembly |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US704398A (en) * | 1901-10-12 | 1902-07-08 | Otis Elevator Co | Safety device. |
US851891A (en) * | 1906-08-06 | 1907-04-30 | Waldo A Layman | Method of electrically braking alternating-current motors. |
US1022001A (en) * | 1908-10-16 | 1912-04-02 | Gen Electric | Electrically-controlled brake. |
US1041642A (en) * | 1911-04-05 | 1912-10-15 | Otis Elevator Co | Brake apparatus. |
US1396757A (en) * | 1920-04-16 | 1921-11-15 | Cons Car Heating Co | Door-control system |
US1496154A (en) * | 1917-04-25 | 1924-06-03 | Nat Pneumatic Co | Pneumatic-motor mechanism |
US1705406A (en) * | 1921-01-22 | 1929-03-12 | Cons Car Heating Co Inc | Door-edge circuit closer |
US1735153A (en) * | 1927-06-10 | 1929-11-12 | Westinghouse Electric & Mfg Co | Door-operating device for elevators |
US1745990A (en) * | 1929-02-09 | 1930-02-04 | Harry B Goldman | Automatic stopping and reversal of electromechanically-operated doors and the like |
US1793716A (en) * | 1928-04-28 | 1931-02-24 | Nat Pneumatic Co | Electric-engine device for safety doors |
US1932198A (en) * | 1930-12-15 | 1933-10-24 | Security Fire Door Company | Door operating mechanism |
US1942253A (en) * | 1929-03-06 | 1934-01-02 | Westinghouse Electrie And Mfg | Elevator door operating apparatus |
US1952681A (en) * | 1931-04-10 | 1934-03-27 | Peelle Co The | Operator for horizontally sliding warehouse doors |
US2425312A (en) * | 1945-05-19 | 1947-08-12 | Gower Thomas Charles | Motor control system |
-
1947
- 1947-01-30 US US725178A patent/US2595291A/en not_active Expired - Lifetime
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US704398A (en) * | 1901-10-12 | 1902-07-08 | Otis Elevator Co | Safety device. |
US851891A (en) * | 1906-08-06 | 1907-04-30 | Waldo A Layman | Method of electrically braking alternating-current motors. |
US1022001A (en) * | 1908-10-16 | 1912-04-02 | Gen Electric | Electrically-controlled brake. |
US1041642A (en) * | 1911-04-05 | 1912-10-15 | Otis Elevator Co | Brake apparatus. |
US1496154A (en) * | 1917-04-25 | 1924-06-03 | Nat Pneumatic Co | Pneumatic-motor mechanism |
US1396757A (en) * | 1920-04-16 | 1921-11-15 | Cons Car Heating Co | Door-control system |
US1705406A (en) * | 1921-01-22 | 1929-03-12 | Cons Car Heating Co Inc | Door-edge circuit closer |
US1735153A (en) * | 1927-06-10 | 1929-11-12 | Westinghouse Electric & Mfg Co | Door-operating device for elevators |
US1793716A (en) * | 1928-04-28 | 1931-02-24 | Nat Pneumatic Co | Electric-engine device for safety doors |
US1745990A (en) * | 1929-02-09 | 1930-02-04 | Harry B Goldman | Automatic stopping and reversal of electromechanically-operated doors and the like |
US1942253A (en) * | 1929-03-06 | 1934-01-02 | Westinghouse Electrie And Mfg | Elevator door operating apparatus |
US1932198A (en) * | 1930-12-15 | 1933-10-24 | Security Fire Door Company | Door operating mechanism |
US1952681A (en) * | 1931-04-10 | 1934-03-27 | Peelle Co The | Operator for horizontally sliding warehouse doors |
US2425312A (en) * | 1945-05-19 | 1947-08-12 | Gower Thomas Charles | Motor control system |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2740856A (en) * | 1952-06-23 | 1956-04-03 | Peelie Company | Low voltage reversing edges |
US2805377A (en) * | 1955-05-03 | 1957-09-03 | Square D Co | Crane hoist motor limit circuit |
US2843690A (en) * | 1956-10-18 | 1958-07-15 | Miller Bros | Safety edge for hangar door |
US3204170A (en) * | 1962-10-01 | 1965-08-31 | Barber Colman Co | Traveling motor door operator |
US5148911A (en) * | 1991-10-31 | 1992-09-22 | Miller Edge, Inc. | Sensing edge switch |
EP0848129A1 (en) * | 1996-12-16 | 1998-06-17 | Snaf Eurl | Automatic gate with an on-board safety system |
FR2757206A1 (en) * | 1996-12-16 | 1998-06-19 | Snaf | AUTOMATIC GATE COMPRISING AN ON-BOARD SECURITY SYSTEM |
WO1999004122A1 (en) * | 1997-07-15 | 1999-01-28 | Geze Gmbh | Automatic door or window installation |
US20020113602A1 (en) * | 2001-02-22 | 2002-08-22 | Hidenori Ishihara | Pinched object detection apparatus for detecting object pinched by automatic door |
US7000352B2 (en) * | 2001-02-22 | 2006-02-21 | Asmo Co., Ltd. | Backdoor system of vehicle having pressure sensor for detecting object pinched by backdoor |
US20220195780A1 (en) * | 2019-05-24 | 2022-06-23 | Assa Abloy Entrance Systems Ab | A sliding door assembly |
US12031372B2 (en) * | 2019-05-24 | 2024-07-09 | Assa Abloy Entrance Systems Ab | Sliding door assembly |
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