US3328917A

US3328917A - Sealing devices

Info

Publication number: US3328917A
Application number: US442635A
Authority: US
Inventors: Carlberg Carl Johan Christer
Original assignee: A M DE JONG AB
Current assignee: A M DE JONG AB
Priority date: 1964-04-08
Filing date: 1965-03-25
Publication date: 1967-07-04
Anticipated expiration: 1984-07-04
Also published as: GB1089712A

Description

July 4, 1967 C. J. C. CARLBERG 3,328,917'

SEALING DEVICES Filed March 25, 1965 United States Patent O 3,328,917 SEALING DEVICES Carl Johan Christer Carlberg, Nasby Park, Sweden, as-

signor to Aktiebolaget A. M. de Jong, Vallingby, Sweden, a corporation of Sweden Filed Mar. 25, 1965, Ser. No. 442,635 Claims priority, application Sweden, Apr. 8, 1964, 4,310/ 64 2 Claims. (Cl. 49-308) This invention relates to a sealing device for doors or the like comprising a supporting bar attached to the door and a strip which is movable in relation to the supporting bar and the door and adapted to be pressed against the floor by the action of an operation rod coacting with the door frame.

The characteristic features of the invention reside in that the strip which has the operating rod at its one end is connected to the supporting bar by at least three obliquely upwardly extending links having openings in their lower ends adjacent to the operating rod, and which has cylindrical pivots attached to it for extending through said openings, while the upper ends of the links have openings through which extend cylindrical pivots mounted on the supporting bar, that the lower opening of the link closest to the operating rod is elongated and extends longitudinally of the link, while the upper opening of the same link, is likewise elongated but extends obliquely downwardly from the longitudinal direction of the link and outwardly from said link, that the intermediary link has round openings at both ends, that the lower opening of the link adjacent the other end of the strip is elongated and extends obliquely downwardly from the longitudinal direction of the link and inwardly toward said link, while the upper opening of the same link is elongated and extends longitudinally of the link, and that tension springs or like means are interposed between at least the two outer links and the strip so as to keep the pivots engaged with those ends of the openings in said links which are closest to the operating rod and thereby to counteract a displacement of the pivots in said openings whereby the strip uponpdownward movement thereof is kept parallel with the supporting bar until some part of the strip encounters an obstacle.

These features of the invention and the advantages gained thereby will become apparent from .the following detailed description in which reference is made to the accompanying drawing in which:

FIG. l shows one end of the sealing device, one wall being broken away;

FIG. 2 shows the middle portion and one end of the device in FIG. l, one wall being likewise broken away;

FIG. 3 shows a section of the sealing ldevice on line III-III in FIG. 2. v

The sealing devioe according to the invention consists of a U-shaped supporting bar 1 which is secured in a suitable manner to the lower edge of the door. Pivots 3 extend between the ange portions 2 of the supporting bar 1. The strip 4 producing the sealing eiect is located between the iiange portions 2 and consists of a slender U- shaped strip 5 which incorporates the sealing member proper which is carried by the strip 5 and consists of a hollow profile member 6 of rubber or like elastic material secured to the strip 5 by gluing or in another suitable manner. The operating rod 7 is arranged atone end of the U-shaped strip 5 and has an .adjustable length in that a threaded portion 8 thereof is engaged in a likewise threaded sleeve 9. The U-shaped strip 5 is connected to the supporting bar 1 by three

links

10, 11 and 12 which are inclined to the longitudinal direction of the sealing device with the lower ends adjacent the end where the ICC operating rod 7 is arranged. Each of the links at the lower end has an opening through which extends a pivot 13 secured to the strip 5, and at the upper end an opening through which extends one of the pivots 3 secured to the supporting bar 1. The

pivots

3 and 13 thus allow the

links

10, 11 and 12 to swing about them. The lower opening 10 of the link 10 adjacent the operating rod is elongated, as will appear from the drawing, and extends longitudinally of the link 10. Also the upper opening 10l of the same link 10 is elongated, but extends obliquely downwardly from the longitudinal direction of the link and in an outward direction from said link. In the intermediary link 11 both the lower opening 11 and the upper opening 11 are round and have clearance t with their respective pivots. The lower opening 12 of the link 12 remote from the operating rod 7 is also elongated and extends obliquely downwardly from the longitudinal direction of said link and in an inward direction towards said link. Finally, also the upper opening 12 of the same link is elongated but extends longitudinally of the arm. The elongated openings are of a width substantially equal to the diameter of the round openings 11 and 11 in the intermediary link 11. Tension springs 14 are interposed between each of the outer links 1i) and 12, respectively, and the strip 5 so as to tend to keep the strip 5 raised into a position where the links are applied against buffers 15. In the position of engagement of the links with said buffers the elongated openings 10 and 12' are parallel as are the

openings

10 and 12".

When the operating rod is applied against the door frame, thus making the sealing device operative, the strip 5 is displaced and simultaneously swung downwards by the action of the links into engagement with the floor. The pivots will come to bear against those ends of the elongated -openings 10', 10 yand 12', 12 which are closest to the operating rod. As the strip 5 is positively guided by the link 11 it will -be parallel with the supporting bar for the entire distance it is moved.

Certain of the openings in the links are of elongated shape because this will make it possible for the strip to take an oblique position should one end thereof encounter an obstacle, as a rule an irregular section of the oor. Should the floor be higher for example at the strip end closest to the operating rod than the remaining floor so that when pressed downwards the strip irst engages said irregularity the pivot associated with the opening 10 will be displaced in said opening. As the intermediate link 11 has round pivot openings, the positively controlled middle portion of the strip will continue its movement. As a consequence, the strip 5 will swing so that the farther end thereof will be slightly in the lead, the pivot associated with the opening 12" being also moved in said latter opening. Should the oor at the end most remote from the operating rod be higher than the remaining floor there will occur a similar pivoting movement of the strip. The pivot associated with the elongated opening 12 is then displaced in its opening and also the pivot associated with the opening 10" will be displaced in its opening.

In addition to keeping the strip in raised position when the operating rod is not engaged with the door frame, the tension springs 14 interposed between the strip 5 and the

links

10 and 12, respectively, tend to counteract the displacing movements of the pivots in the elongated openings, in the two examples of oblique positioning given. The springs thus serve as damping elements, preventing the strip from being subjected to too abrupt pivoting and displacing movements.

As is well known, the oor is exposed to considerably higher wear in the door opening itself than anywhere else in the room. To provide a complete seal between the door and the floor also in the case of the floor being recessed owing to such wear, the strip 5 proper is slightly yielding or flexible. The .active displacing distance of the sealing device can therefor be set according to the most recessed portion of the floor, in which case the middle portion of the strip when being made operative is pressed down into said recessed portion while the end portions rest on the adjoining higher oor portions. Also in this instance the pivots will have the necessary clearance by the provision of the elongated openings in the two outermost links.

lThe above embodiment of the invention was described for purposes of illustration rather than limitation. All possible Variations and modifications of the invention are understood as being included within the scope of the appendant claims.

What I claim and desire to secure by Letters Patent is:

1. A sealing device for a door or the like comprising a supporting bar attached to the door and a sealing strip which is movable in relation to the supporting bar and the door and adapted to be pressed against the oor or the like by the action of an operating rod coacting with the door frame and is hinged to the supporting bar by obliquely upwardly extending links having openings in their lower ends for cylindrical pivots attached to the strip and openings in their upper ends for cylindrical pivots attached to the supporting bar, wherein at least three links are interposed between the strip and the supporting -bar with the lower ends of the links situated nearer the end of the strip carrying the operating rod than the upper ends of the same, the lower end opening of the link closest to the operating rod end of the strip is elongated and extends longitudinally of the link, while the upper end opening of the same link is likewise elongated but extends slantwise downwardly from the longitudinal direction of the link and slantwise away from the lower end of the link; the intermediate link has round openings at both ends; the lower end opening of lthe link adjacent the end of the strip opposite the end of the operating rod is elongated and extends slantwise downwardly from the longitudinal direction of the link and slantwise towards the upper end of the same link, while the upper end opening in the last mentioned link is elongated and extends longitudinally of the same; and tension springs or the like `are interposed between, at least the links having elongated openings and the strip so as to keep the pivots engaged with those ends of the openings in said links which are closest to the operating rod end of the strip, and thereby to counteract Aa displacement of the pivots in said openings whereby the strip upon downward movement thereof is kept parallel with the supporting bar until some part of the strip encounters an obstacle.

2. A sealing device as claimed in claim 1, wherein the operating rod is of adjustable length, has its inner end pivoted to the strip and extends through a guiding means arranged at the one end portion ofthe supporting bar.

References Cited UNITED STATES PATENTS 938,107 10/1909 Beale 49-308 1,681,869 8/1928 Meek 49-308 FOREIGN PATENTS 704 1/1910 Great Britain. 741,851 12/ 1955 Great Britain.

DAVID I. WILLIAMOWSKY, Primary Examiner.

HARRISON R. MOSELEY, KENNET-H DOWNEY,

Examiners. A. I. BREIER, Assistant Examiner.

Claims

1. A SEALING DEVICE FOR A DOOR OR THE LIKE COMPRISING A SUPPORTING BAR ATTACHED TO THE DOOR AND A SEALING STRIP WHICH IS MOVABLE IN RELATION TO THE SUPPORTING BAR AND THE DOOR AND ADAPTED TO BE PRESSED AGAINST THE FLOOR OR THE LIKE BY THE ACTION OF AN OPERATING ROD COACTING WITH THE DOOR FRAME AND IS HINGED TO THE SUPPORTING BAR BY OBLIQUELY UPWARDLY EXTENDING LINKS HAVING OPENINGS IN THEIR LOWER ENDS FOR CYLINDRICAL PIVOTS ATTACHED TO THE STRIP AND OPENINGS IN THEIR UPPER ENDS FOR CYLINDRICAL PIVOTS ATTACHED TO THE SUPPORTING BAR, WHEREIN AT LEAST THREE LINKS ARE INTERPOSED BETWEEN THE STRIP AND THE SUPPORTING BAR WITH THE LOWER ENDS OF THE LINKS SITUATED NEARER THE END OF THE STRIP CARRYING THE OPERATING ROD THAN THE UPPER ENDS OF THE SAME, THE LOWER END OPENING OF THE LINK CLOSEST TO THE OPERATING ROD END OF THE STRIP IS ELONGATED AND EXTENDS LONGITUDINALLY OF THE LINK, WHILE THE UPPER END OPENING OF THE SAME LINK IS LIKEWISE ELONGATED BUT EXTENDS SLANTWISE DOWNWARDLY FROM THE LONGITUDINAL DIRECTION OF THE LINK AND SLANTWISE AWAY FROM THE LOWER END OF THE LINK; THE INTERMEDIATE LINK HAS ROUND OPENINGS AT BOTH ENDS; THE LOWER END OPENING OF THE LINK ADJACENT THE END OF THE STRIP OPPOSITE THE END OF THE OPERATING ROD IS ELONGATED AND EXTENDS SLANTWISE DOWNWARDLY FROM THE LONGITUDINAL DIRECTION OF THE LINK AND SLANTWISE TOWARDS THE UPPER END OF THE SAME LINK, WHILE THE UPPER END OPENING IN THE LAST MENTIONED LINK IS ELONGATED AND EXTENDS LONGITUDINALLY OF THE SAME; AND TENSION SPRINGS OR THE LIKE ARE INTERPOSED BETWEEN, AT LEAST THE LINKS HAVING ELONGATED OPENINGS AND THE STRIP SO AS TO KEEP THE PIVOTS ENGAGED WITH THOSE ENDS OF THE OPENINGS IN SAID LINKS WHICH ARE CLOSEST TO THE OPERATING ROD END OF THE STRIP, AND THEREBY TO COUNTERACT A DISPLACEMENT OF THE PIVOTS IN SAID OPENINGS WHEREBY THE STRIP UPON DOWNWARD MOVEMENT THEREOF IS KEPT PARALLEL WITH THE SUPPORTING BAR UNTIL SOME PART OF THE STRIP ENCOUNTERS AN OBSTACLE.