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Publication numberUS2735132 A
Publication typeGrant
Publication dateFeb 21, 1956
Filing dateJan 14, 1953
Publication numberUS 2735132 A, US 2735132A, US-A-2735132, US2735132 A, US2735132A
InventorsS George Wartian
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Wartian
US 2735132 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Feb. 2l, 1956 G. WAR-HAN DOOR CLOSER AND CHECK Filed Jan. 14. 1953 muhmv IN V EN TUR. ya /4/4/124/7.

A WWK NNW O%\ WNO United States Patent M' 755,132 noon CLOSER AND CHECK George Wartian, Detroit, Mich., assgnor to Wartian Lock Company, St. Clair Shores, Mich., a corporation of Michigan Application January 14, 1953, Serial No. 331,156 13 Claims. (Cl. 16-52) This invention relates to new and useful improvements in a door closer and check, and has particular reference to such a device in which final closing movement of a door is accurately controlled and in which a positive checking of closing movement of the door is obtained just before the door is closed to prevent slamming of the door.

A principal object of the invention is to provide a new and improved door closer and check.

Another object of the invention is to provide a door closer and check in which closing movement of a door is checked just before the door is finally closed.

A further object of the invention is to provide a device of the type described in which nal closing movement of the door may be accurately controlled.

Other and further objects of the invention will be apparent from the following description and claims and may be understood by reference to the accompanying drawing, of which there is one sheet, which by way of illustration shows a preferred embodiment of the invention and what I now consider to be the best mode in which I have contemplated applying the principles of my invention. Other embodiments of the invention may be used without departing from the scope of the present invention as set forth in the appended claims.

In the drawing:

Fig. 1 is a sectional view through my improved form of door closer and check, showing the door in closed position;

Fig. 2 is a sectional view similar to Fig. 1 but showing the door partially open and moving toward closed position;

Fig. 3 is an enlarged fragmentary view of the structure within the circle numbered 3 of Fig. 1; and

Fig. 4 is an enlarged fragmentary view taken along lines 4 4 of Fig. 2.

Referring more particularly to the drawing, the door closer comprises a cylinder threaded at one end intol an end cap 12 and at its other end threaded into an end cap 14. A bracket 16 is pivotally connected to end cap 12 by means of a pin 18, and such bracket may be secured to a door 20 by means of screws 22. A piston 24 is reciprocable within cylinder 10 and has secured thereto a piston rod 26 by means of a pin 28, the piston rod extending through an opening in end cap 14 and having its outer end pivotally connected to a bracket 30 which may be secured by screws 32 to the frame 34 within which the door 20 is hingedly mounted. A sealing gasket 36 is arranged within a groove in end cap 14 to provide a seal between piston rod 26 and end cap 14, and gaskets 38 and 40 provide seals between cylinder 10 and end caps 14 and 12, respectively.

. The cylinder v10 is lled with a suitable fluid, such as oil,through which the piston 24 moves as the door 20 is opened and closed. It will be seen that opening'of door 20 will eiect movement of piston 24 toward the left end of cylinder 10 against the force of a spring 42 which surrounds piston rod 26 and tubular extension 44 of l 2735,132 Patented Feb. 21, 1956 piston 24 and reacts against end cap 14 and the enlarged head of piston 24 to bias the piston toward the right-hand end of the cylinder and effect closing movement of the door.

The piston is provided with a plurality of passages 46 opening into larger passages 48, the passages 46 and 48 defining valve seats 50 therebetween. Ball valves 52 are adapted to seat on valve seats 50 under the inuence of springs 54 backed up by suitable washers 56 or the like arranged at the right-hand ends of passages 48 and provided with openings 58. Passages 46, 48, and 58 provide iluidv llow passages through piston 24 when ball valves 52 are unseated against the force of springs 54.

The piston 24 is provided with a central passage 60 communicating with the interior of tubular extension 44, and a hollow tubular valve member 62 is reciprocably arranged in bore 60 and retained therein by snap ring 64 arranged in an annular groove in the left-hand end of valve member 62 and adapted to bear against a shoulder formed between bore 60 and passage 66 formed within the extension 44 of piston 24.

The outer end of valve member 62 is tapered at 68 as shown and the central passage through valve member 62 terminates at its right-hand end in a restricted passage 72 communicating with a cross-slot 74 formed in the end of the valve member 62. A spring 76 is arranged within the passage 66 in extension 44 and reacts against the inner end of piston rod 26 and against valve vmember 62 to urge the valve member 62 toward the right relative to piston 24.

With the door in the closed position shown in Fig. 1, opening of the door will effect the relative movement between piston 24 and cylinder 10 against the force of spring 42. The fluid-in the left-hand end of the cylinder will react against ball valves 52 and unseat the same against the force of springs 54 so as to open the passages through the piston 24 through which fluid may ilow from the left end of the cylinder to the right end thereof. The size and number of the passages through the piston may be selected in such manner that the door may be opened with relatively little effort. A small amount of fluid in the left end of cylinder 10 may at this time b e displaced through radial openings 78 in extension 44, passage 66, and passages 70 and 72 in valve member 62. A resilient buffer member 80, piece of resilient material, surrounds piston rod 26 's shown and is adapted to engage the end cap 14 when the the right-hand end o f cylinder 10 cannot flow through the passages 46, 48 and 58 extending through the and ball valves 52 will be seated on valve seats springs 54 and by the pressure of the iluid in the righthand end of the cylinder. The only means for displacing oil from the right-hand side of the piston to the left?, hand side thereof will be through the hollow valve member 62, passage 66 and openings 78 in extension 44 of piston 24. The passage 72 in the right-hand end ofthe valve member 62 provides a restricted opening through which such fluid is displaced, and the size of passage 72 is such as to permit the door to be closed at vthe desired rate under the influence of spring 42.

The inner end of end cap 12 is provided with a central boss 82 having a tapered recess 84 therein having substantially the same degree valve member 62. A set screw 86 is threaded into end cap. 12 and has its inner end terminating in the bottom of tapered recess 84. A nut 88 is threaded on to screw piston,

which may comprise a cylindrical l50 by4 of taper as the end 68 of 86 for. holding the same in any position to which it may be aifilaetesi- Ae. the 99! nears the .east af .its .elszeia movement, the tapered end 6 of valve member 62'entcrs recess 84 and engages the iimer end of screw 86, and this. engagement .et yah/e member 1&2 and .screw are: 5 vides a. nereeatible .er ie-tiene ,Cheek in. the elsing .motief ment .ef the door. with the .anered end ,Git .Seated against screw 86 a slight clearance is provided between the end 68 and recess S11., as .ie mere eteaxly ehewn ,in Fia 3- This .clearance between 'ead 6.. .and ,recess $4 @milities .a restricted passage fr. the tlew'et .fluieirem the .righihand end :et cylinder 10. .through .emes elet 74 and here 79, of salve. member 62 te .the left-.head .ene .ef the eylinder and .regulates the speed .ef .the 'l .t few degrees .0f closing meyemerit ef 'the .deer- At the .me the tebeted end .6.8. enters reeessl .85 en@ .engages .screw e deflnite er perceptible .eheelsing meyexilerif .ef the .neer is obtained due te .the .restricted .eleerenee .between the .valye inember 62 .and recess 51, ,and also befeauee .the eating le igea the valve member .6.2. te ard the right relafiye te. Pisten Z4. te .fend te, maintain the valve member .6l in. etieli veettien relative .te .the Piste and against leeren 8.6- tter the .Checking aetifn h taken place ,the Spring 42 -yviil .eeminae te mere" pieten 25 toward .the iight .enel of the cylinder and will mese the pister; ,reletiye .t0 the valve member .e2 against ,the .feree .ef .serine 79- Adieeteient ef seien will .vary .the Clearance between the tapered lead QS and ,feeese $4 and will slee .vary the Deia? et leisten .treyel at whieh y.the valve member s? will .eagage eerew ,Se ee that the final .Closing 'mei/.em 1.1. et the deer may be regulate@ as desiree, and ,web e. Slag Itter-e- 11.1 he auch that the .daer will eet Islam. huif- T .eekme @eeen referred te abeve ...dille slower the last few degreesof speedofclos'ing oft'he door in its Closing @weiem will be .eli-tained regardless .ef the @stent-te svhieh the deer may be .eeered irefffifs desee veeitiea .beeauee tvb.. lar member s2 be `teveeleult 0f -f sees te et les@ .te .Seine iam fefelifevenahe deer .isepeei .erily .e .few .de ees5 and ebeequelite: lease .ef the deer Will'ceffeet the .entry ef .theitepered .eee @8f .inte the recess' .54 .te Slew dev/.fi the tieni lesive .ef the door." .,In'otber Words, Ithe oor cannot {beclosed A' teda? insxtscrew 8x6 ii'ielf the flefeilene te? ne S- 1 estate the .Cheating an@ l des above.

in 'are `ppi-.st te piston .re'lative'tosaid 'cyliderin said opposite direction, a ,hollow 'vallv member bly 'carried bysaidmpiston arid 4''comrrifriic),ating" with said'cylinder ,on POSe sides or l K v 'ma fidfhfyroviaig"a nuidln'wipassge throliiglisaid piston, stop finsaidfcylind'er,said valvenierfriberbeidg adapted vto erigagfd fsaidstop l111 ans 65 dnringtliefl'ast .portion fof h movement "of said Vpiston relativetosaid cy der irisid .Opposite` dirfec-:tion'ftothere? hyetcect telativemovemeht bet.iilteen'fs:aid'pl n and s valve member, sprinlgzmelans @or resisting salidfrela movement betwe'e'nusaid and 2valve member, `the 7() @ad Wall rQi? Saidyliader beiliafermedzte .meaeratewith Seid -xelte .member .te restrie .the Een 0f huid through said y.passage insaid yalvemembcr when said v alve .membelis seated; against saidstop means.

`2. .A doorcltvrserancl check comprising a cylinder, ,a

piston reeipi'ocable in said cylinder, valve means in said piston adapted to permit the fiow of fluid through said piston upon` mdveinn't'fof"saidnpistbd"elativ't "said cylinder in one direction and adapted to prevent tiuid flow through said piston upon movement of said piston in the opposite direction, spring means for moving said piston relative to said cylinder Y.in said opposite direction, a valve member movably carried by said piston and having a uid iiqw passage communicating with said cylinder on opposite sides of saidpist'on', sfopv means at one end of ,saidcylinderone endof u said valve member being` adaptedI t'o' be seted'against said stop means "ding'fthe last portion of the movement of said piston relative to said ey-,lnder .in .Seid .eppeeite elireeten to effeet relative a h owltubular rnemb er reeiaee.

engagement with saisi etai? ew through .saisi .Passage and .siprineffiieene reacting .QP said piston and said tublarmember fof res ntly opposiaathexeletise .mwefneafhetweee Sai@ Pieten and .tebillef 4. A door closer and check comprising a cylinder, a pisteureeipreeebie insetti ...ylteeierfvelre means asi 'te'd .said .eisten 'ieaaffeefe am# @iid fieivthlehseiil piston upon relative movement of said piston and cylinder insane .eliteetien .enel @dented .te .PI.eventflild 119W 'thi Hgh said piston upon relative movementofsvd'kpiston and cylinderinthe opposite dir ion, sp nlg'rnea'ris torzbiasiiigv id said piston and cylinderioimrelative rn vement e rhellew tabular .member .estilthieusti. member'faseeietedlwiihe eyii der, dta le 111er being dee-.ted te Haags op'rne'mber d mg s d rel emovement, f'siaid d cylindergm saidlopposlte to said tabula ineeid Cilinder@ .aefable the latter ie .ineeaesetn .t...\rith S restricting time tten' fthsenhead Rae .se meansiferreeiliently eeaeeiaealierelet e tneeesdrpieten end.tuln1lar.aieraizer- 5. A door closer and chekfornprisin'g :acyl dei', .a

nieteateeintseaeleiaseid erliaefyelve ...Ineens 'Se te@ withsaidpiei ,.eaptedte nenni ilid 119W hrsad pistqnnpqn telatineruoyement .f Said pi$10i1dlllilf saidpiston pon relative Vmovement Yofsaid piston and in one'. direction and adapted .to prevent .iuidjfiQW thrlgh cylinder in the opposite direction, spring means for biasing said piston and cylinder for relative movement in said opposite direction, a hollow tubular member carried by said piston and communicating with said cylinder on opposite sides of said piston, said tubular member being movable with said piston toward and away from an end wall of said cylinder and being engageable with said end wall of said cylinder only during the last portion of said relative movement of said piston and cylinder in said opposite direction, said piston being movable relative to said tubular member during said portion of said movement, and spring means reacting on said piston and said tubular member for opposing said relative movement between said piston and tubular member.

6. A door closer and check comprising a cylinder, a piston reciprocable in said cylinder, valve means associated with said piston adapted to permit lluid ow through said piston upon relative movement of said piston and cylinder in one direction and adapted to prevent lluid flow through said piston upon relative movement of said piston and cylinder in the opposite direction, spring means for biasing said piston and cylinder for relative movement in said opposite direction, a hollow tubular member movably carried by said piston and communicating with said cylinder on opposite sides of said piston, means for effecting relative movement between said tubular member and said piston during the last portion of said relative movement of said piston and cylinder in said opposite direction, said tubular member being movable with said piston except during said last portion of movement between said piston and cylinder and spring means resiliently opposing the relative movement between said piston and tubular member.

7. A door closer and check according to claim 6 including means accessible exteriorly of said cylinder for adjusting the relative position of said piston and cylinder at which the relative movement between said piston and tubular member is effected.

8. A door closer and check comprising a cylinder, a piston reciprocable in said cylinder, valve means in said piston adapted to permit the flow of iluid through said piston upon movement of said piston relative to said cylinder in one direction and adapted to prevent uid ilovv through said piston upon movement of said piston in the opposite direction, a hollow Valve member reciprocably carried by said piston and communicating with said cylinder on opposite sides of the piston and thereby providing a fluid flow passage through said piston, means providing a valve seat at one end of said cylinder, stop means associated with said valve seat and with which said valve member is engageable toward the end of the movement of said piston relative to said cylinder in said opposite direc* tion, said valve seat being formed to restrict the flow of uid through said passage in said valve member when said valve member is in engagement with said stop means.

9. In a door closer and check, a cylinder, a piston reciprocable in said cylinder, means biasing said piston toward one end of said cylinder, a valve member reciprocably carried by said piston, said valve member having a passage therein communicating with said cylinder on opposite sides of the piston and thereby providing a uid ow passage through said piston upon movement of said piston toward said one end of said cylinder, said valve member having a tapered end, one end of said passage terminating in said tapered end, means providing a tapered recess at said one end of said cylinder, and an adjustable stop member accessible exteriorly of said cylinder projecting into the bottom of said recess and with which said end of said valve member is engageable during the last portion of piston movement in said one direction, said recess being formed to cooperate with said end of said valve member to restrict the flow of uid through said passage in said valve member when the latter is in engagement with said stop member, and a spring between said valve member and said piston.

10. In a door closer and check, a cylinder, a piston reciprocable in said cylinder, a valve member carried by said piston, said valve member having a passage therein communicating with said cylinder on opposite sides of said piston, means at one end of said cylinder with which one end of said valve member is engageable during the last portion of piston movement in one direction, said means including a surface formed to cooperate With said one end of said valve member to form a restriction between said one end of said cylinder and said passage in said valve member when said valve member is in engagement With said means.

11. A door closer and check according to claim 10 wherein said means comprises a threaded member accessible exteriorly of said cylinder and said surface surrounds the inner end of said threaded member.

12. In a door closer and check, a cylinder, a piston reciprocable in said cylinder, means biasing said piston toward one end of said cylinder, a valve member movably carried by said piston, said valve member having a passage therein communicating with said cylinder on opposite sides of the piston and thereby providing a fluid ow passage through said piston upon movement of said piston toward said one end of said cylinder, means providing a valve seat at said one end of said cylinder, said valve member being adapted to cooperate with said valve seat to restrict the ow of fluid through said passage in said valve member during the last portion of piston movement in said one direction.

13. A door closer and check comprising a cylinder, a piston reciprocable in said cylinder, spring means for biasing said piston and cylinder for relative movement in one direction, a hollow tubular member reciprocably carried by said piston and communicating with said cylinder on opposite sides of the piston and thereby providing a iluid passage through said piston, and fixed means in said cylinder cooperable with said tubular member during the last portion of said relative movement of said piston and cylinder in said one direction, said lixed means and tubular member forming a valve means adapted to restrict iiuid ow through said passage.

References Cited in the iile of this patent UNITED STATES PATENTS

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1021803 *Apr 12, 1911Apr 2, 1912Famous Door Check CompanyDoor-check.
US1965805 *Dec 24, 1931Jul 10, 1934Riggins David EDoorcheck
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2976032 *Mar 6, 1958Mar 21, 1961Thompson Ramo Wooldridge IncHydro-pneumatic suspension strut
US3053199 *Mar 17, 1961Sep 11, 1962Brox Raymond LHydraulic shock absorber tow bar structure
US3064303 *May 18, 1959Nov 20, 1962Illinois Lock CoValve for door closer
US3078499 *Sep 30, 1958Feb 26, 1963Illinois Lock CoDoor closer
US3079629 *May 4, 1961Mar 5, 1963Ronan And Kunzl IncHydraulically retarded door closer
US4270635 *Apr 5, 1979Jun 2, 1981Fichtel & Sachs AgShock absorber for vehicles
US4723777 *May 14, 1986Feb 9, 1988Gared CompanyBasketball goal and backboard unit
US6009597 *May 11, 1998Jan 4, 2000Yu; King-SungBuffer device of door
US7387181 *Oct 4, 2004Jun 17, 2008Associated Spring RaymondHood lift system
EP0298231A1 *May 20, 1988Jan 11, 1989Thomas Industries, Inc.Door closer
Classifications
U.S. Classification16/52, 188/284, 267/126, 16/86.00R
International ClassificationE05F3/10, E05F3/00
Cooperative ClassificationE05F3/108
European ClassificationE05F3/10E