Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUSRE24065 E
Publication typeGrant
Publication dateOct 4, 1955
Filing dateJun 11, 1949
Priority dateJun 11, 1949
Also published asUS2639832
Publication numberUS RE24065 E, US RE24065E, US-E-RE24065, USRE24065 E, USRE24065E
InventorsCarl N. Bergstrom
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
bergstrom
US RE24065 E
Abstract  available in
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Oct. 4, 1955 c. N. BERGSTROM HOLDING SEAL FOR CRANKCASE GASKETS Original Filed June 11. 1949 m, m m

//\/1/E/\/ 7-5; CARL NbERGsTROM TTUF/VE/ United States Patent "ice Reissue, If; egg:

the ferrule 17. The end 21 is preferably flared to a thin v 244,65 edge to facilitate the insertion of the screw point 22. HOLDING SEAL FOR CRAN'KCA E A KE In the use of this device, it is only required tmount the gasket 16 on the flange 12 and then drop a fe e 17 Carl Bergstmm Portland into each pair of holes 14 and 15 until the flange 18 rests 0 No. 2,639,832, dated May 26, 1953, Serial No. upon the gasket 16. Screws 17-A are now pushed into 98,495, June 11, 1949. Application for reissue August the ferrule ends 21 and held by means of the beads 20.

1953, Serial No. 375,313 No difficulty will be encountered in starting the screws 5 Claim (CL 21F) 17-A and then sending them home by means of a speed wrench or power driver.

Matter enclosed in heavy brackets appears in the The ferrule is flowed by the tightening action to the forms I10 P Of \his reissue p form shown in Fig. 3 in which the clearance is exaggerated.

original patent but f Printed in italics indicates the addifions In practice the ferrule 17 fills up the clearance space 23 and made by flows around the threads of the screws 17-A.

Should the crankcase be removed, the gasket is more Th1s mventron relates generally to the automotive 1napt to come away intact with the crank case as it is held dustry and particularly to a holding seal for crankcase againstit by the various ferrules. I gaskets Referring to Figure 3 of the drawing, it is to be noted The lh object of lhvenhoh Is to provlde a means that the ferrule 17 has been deformed, as explained herefor faclhtahhg the apphcahoh of crankcase hhd gasket inbefore, to fill the space 23 and the grooves of the screw to a motor thread to form a fluid seal. In Figure 2 of the drawing it is The Second object to Insure the ahghmeht of the holes to be noted that the ferrule extends downwardly a substanlh the crankcase and gasket and to protect the gasket tial distance below the flange 12. Thus, it will be underarouhd h l stood that in the event the space 23 is less than that indi- The thhd oblect is to lhshre a more Perfect seal around 25 cated in Figure 3 or, alternatively, if the ferrule is longer 2;: bolts and to render unnecessary the use of lock wash or thicker than indicated, the excess material of which the ferrule is formed will be forced outwardly between the The fohrth object 15 to uhhze h h means as bolt head 17-A and the crankcase flange. Thus, it will scrhw retamer to hold the Screws m pchsmoh for the apph' be understood that the length of the ferrule is not critical, canon of a speed wrehch or a power i it being required only that the ferrule extend through the These h other oblhcts are ,accohhphshhd 1h the'mhhher combined thickness of the gasket and the flange a distance set forth lhhle fohohhhghpeclhcahohhs Illustrated m the sufficient to result in its deformation to form a fluid seal accom anying drawmg, n whlchz. when the bolt has been tightened. In other words, the 1 1s a fragmentary perspective. showmg length of the cylindrical portion 17 must be greater than of h motor base gashe} hhd crhjhhcase' the ultimate combined thickness of the compressed gasket 2 1s a fragmentary sechoh showmg relahoh of and the flange, i. e. after the bolt has been tightened. ig g as the crankcase and gasket are belhg put mto It will be further understood that the ferrule may be employed in the securing together of rigid elements, as com- 3 15 law shhhar to but shhwlhg the crank pared with the resilient gasket 16. For example, a single h 1h Poslhoh agalhst the motor base whh the bolt 40 metal plate may be considered equivalent to the combination of gasket 16 and flange 12. If such a plate is to be 1s a Perspechve of the ferrule whh Pans broken secured to a second member, such as the motor base 10, y In sechoh' the ferrule is inserted through the plate to retain the screw Llke numbers of reference hefer to the same or Shhhhr prior to attachment to the base 10, and it is required that parts thrhughout Several the ferrule 17 must be longer than the thickness of said Referring m detah to the drawmg thehe shown the plate in order for the ferrule to deform under the pressure lower portion 10 of a motor base to WhlCll is to be atof the tightened screw to form a fluid 0L tached a crankcase 11 by of Its flange In practice, the ferrule is provided in sufficient length Around the flange 12 are hsposed a Phhhhty of screws to accommodate a substantial range of thicknesses of such 13 which pass through holes 14 in the flange 12 and members 16 and 12. The ferrule may then be shortened through holes m the cork or composlhoh gasket ah to any desired length merely by cutting off the unwanted of m portion opposite the flange 18.

There 1s always provided around the screws 13 a con- 1 cl siderable amount of clearance space as the parts are inter- 1, A f 1 fo use i temporarily mmi a f t changeable and a workman, having but two hands, has ing member by its shank portion while fastening machine them very full when putting a crankcase and its gasket in parts together by insertion and fixedly securing a fasposition. tening member in aligned openings in said machine parts,

Shellac or other stick seal is often used on both sides Said ferrule comprising a cylindrical Portion of mof the gasket and this tends to hold the gasket in place able Plastic resin having bol'fi which is p 011twardly toward one end to provide an entering portion on the crankcase flange 12.

However, once the gasket touches the base 10 there is for the shank portion of the fastening member, the other apt to be a shifting of the gasket 16 on the flange 12. end havmg an outwardly exiehdmg. flange a h My device consists of a ferrule 17 of plastic materials ehgagmg hhhular bead extehdlhg. radlahy oh the h I: such as the phenol derivatives] or lead or other Soft side of said ferrule bore for fIlCllOIlfi-l engagement wlth ductile material the shank portion of the fastening member whereby the e ferr e 17 1 formed on e end a flange 18 w fastening member is temporarily retained by said ferrule d (1 th 1 19 h h H th h fl upon 111881111011 of the fastening member theremto. W1 alfnu {lugs w 5 en t e ange 2. In combination; a first member of predetermined and improve lt h lding and eahug aCtl nthickness adapted for being secured to a second member,

The ferru e 17 has formed in h Side thereof, a bead a screw extending through said first member for threaded engagement with said second member, and a cylindrical ferrule of deformable plastic material mounted on the 20 which may be continuous or merely broken or even single points or projections at two or more places around thickness adapted for screw and tapering to a thin edge toward the head end of the screw and having a radial flange at its opposite end, said flange being disposed between said members with the cylindrical portion extending through said first member, and the length of the cylindrical portion of the ferrule being greater-than the thickness of said first member, whereby when the screw is drawn up tight the cylindrical portion of said ferrule is deformed to form a seal about said screw, the cylindrical portion of the ferrulebeing provided with a thread engaging projection extendingradially inwardly thereof whereby the screw is snpportd by'the ferrule.

3. In combination; a first member of predetermined being secured to a second member, a screw extending through saidfirst member for threaded engagement with said second member, and a cylindrical fei rule of deformable plastic material mounted on the screw and having a radial flange at one end, said flange being disposed between said members with the cylindrical portion extending through said first member, and the length of the cylindrical portion of the ferrule being greater than the thicknessof said first member, whereby when the screw is drawnup tight the cylindrical portion of said ferrule is deformed to form a seal about said screw, the cylindrical portion of the ferrule being provided witha thread engaging projection extendingradially inwardlythereof whereby the screw is supported by the ferrule.

4. In combination; a fastening member haying a threaded shank and a headed end, first and second members having aligned openings therein for receiving the shank of the fastening member, a ferrule comprising a body of deformable plastic material having a hollow cylindrical shank-retaining portion and a radial flange on one end thereof, the cylindrical portion extending throughthe opening in the first member with but little space between its exterior face and the wall of said latter opening and with the flange interposed between the first member and portion 'having a continuous circumference surrounding the fastening member shank and having a length greater than the thickness of the first member, the fastening member shank extending through the hollow cylindrical portion with its headed end at that end of the cylindrical portion of the ferrule that is opposite the flange thereof, the cylindrical portion of the ferrule frictionally engaging the fastening member shank whereby to secure the 'ferrule and fastening member in the firstmernber, whereby when the fastening member shank is secured to the second memberand the first and second members are drawn together by said fasteningmember the cylindrical portion ofthe ferrule is buckled "into the opening in said first member to form afluid seal between said shank and the opening in the first member.

5.'=In combination," a fastening member having a threaded shank and a headed end, first and second members havinga gasket interposed therebetween and all second member, the cylindrical quantum;

penings therein for receiving the shank membana ferrule comprising a body of deformable plastic material having a hollow cylindrical shank-retaining portion and a radial flange on one end thereof, the cylindrical portion extending through the aligned openings in the gasket and first member with but little space between its exterior face and the wall of said latter aligned openings and with the flange interposed between the gasket and second member, the cylindrical portion having a continuous surface surrounding the fastening membershank and having a length greater than the combined thickness of the gasket and first member, the fastening member shank extending having aligned v through the hollow cylindrical portion with its headed end at that end of the cylindrical portion of the ferrule that isopposite the flange thereof, the cylindrical portion of the ferrule frictionally engaging the fastening member shank whereby to secure the ferrule and fastening meml erjn the al ignedflpmit gs in, the.gasket.and first member ,and .-to ,prergent displacement of .said openings, whereby when the fastening member shank is secured to thesecqnd ,memb enandjhe said .gasket and first and second members are drawn together by said fastening member the cylindrical portion of the ferrule is buckled intosaid,aligned.o en ings in the gasketand firstmember to .f ormpfiuid ,sealbetweenlsaid shank ,and the wall of said la'tteropenings.

.llsfe jucps ,Qitedinthefile .o hi P en or the original patent UN TE TAJT J AI NTS 233,5:79 Varlot Oct. 19, 1880 813,575 Nichols Feb. 27, 1906 947,185 :McBean Jan. 18, .1910 :1;08 3,350 zDavis Jan. 6, 1914 1,356,404 Robinson Oct. 19, 1920 1,515,996 Buchanan Nov. 18, 1924 1,862,320 :Ruef June 7, 1932 21,873,894 Kimball Aug. 23, 1932 1,959,607 Anderson May 22, 1934 2,030,088 Y0ung Feb. 11, 1936 --2,09Q,3:58 "Robertson Sept. 7, 1937 2,150,080 .tRawlings- Mar. v17, 1939 2,159,346 Welch May 23, 1939 2324;1412 :Eklund July 1-3, 1943 2,343,983 Knowlton Mar. 14, 1944 2,352,487 McNamara June 27, 1944 2,376,072 Miller May 15, 1945 12,425,209 .Snyderet a1. Aug. .5, 1947 2,491,085 iBurrows Dec. 13, 1949 -PA ENTS German Nov. 15, 1900 1 OTHER REFERENCES .B a t q 9.. .R semend .PQ -Wa Prodw Pu y Pr qu .ifi gsinee i tsts memhs 1 12 -8 .R

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2899015 *Dec 13, 1956Aug 11, 1959Gen Motors CorpEngine bearings and lubrication system
US5044641 *Oct 31, 1989Sep 3, 1991Dana CorporationFrictionless positioning grommet for engine gasket
US5082407 *Apr 17, 1990Jan 21, 1992Marker Deutschland GmbhFastener retainer
US5083801 *Feb 19, 1991Jan 28, 1992Ishikawa Gasket Co., Ltd.Steel laminate gasket with dowel engaging device
US5096325 *Jan 24, 1991Mar 17, 1992Ishikawa Gasket Co., Ltd.Positioning pin for a gasket
US5529313 *Jan 25, 1995Jun 25, 1996Malks; Josh B.Frangible gasket alignment device for molded gaskets
US5645282 *Mar 14, 1995Jul 8, 1997Dana CorporationMulti-purpose grommet
US7000585Sep 17, 2002Feb 21, 2006Federal-Mogul World Wide, Inc.Preassembly tool
US9046178 *Mar 8, 2013Jun 2, 2015Denso International America, Inc.Self-retaining gasket and fastener retainer
US20040051253 *Sep 17, 2002Mar 18, 2004Federal-Mogul World Wide, Inc.Preassembly tool
US20140252723 *Mar 8, 2013Sep 11, 2014Denso CorporationSelf-retaining gasket and fastener retainer
US20140252724 *Mar 8, 2013Sep 11, 2014Denso CorporationSelf-retaining gasket
Classifications
U.S. Classification403/14, 277/636, 277/640
International ClassificationF16J15/02, F16B41/00, F16B37/04, F16B43/00
Cooperative ClassificationF16J15/02, F16B43/001, F16B41/002, Y10S411/929, Y10S411/915, Y10S411/999, F16B41/00, F16B37/043, Y10S29/034
European ClassificationF16B41/00B, F16J15/02, F16B37/04B3, F16B43/00B, F16B41/00