US3866299A - Seal assembly tool - Google Patents

Seal assembly tool Download PDF

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Publication number
US3866299A
US3866299A US38628673A US3866299A US 3866299 A US3866299 A US 3866299A US 38628673 A US38628673 A US 38628673A US 3866299 A US3866299 A US 3866299A
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US
United States
Prior art keywords
piston
cylinder
open end
plates
boot
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
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Inventor
Jack C Gregg
Max D White
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.)
G AND D TOOL CO Inc
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G AND D TOOL CO Inc
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Application filed by G AND D TOOL CO Inc filed Critical G AND D TOOL CO Inc
Priority to US38628673 priority Critical patent/US3866299A/en
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Publication of US3866299A publication Critical patent/US3866299A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/0035Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for motor-vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/0028Tools for removing or installing seals
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00Parts or details
    • F16D65/0043Brake maintenance and assembly, tools therefor
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49826Assembling or joining
    • Y10T29/49863Assembling or joining with prestressing of part
    • Y10T29/4987Elastic joining of parts
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/53Means to assemble or disassemble
    • Y10T29/53657Means to assemble or disassemble to apply or remove a resilient article [e.g., tube, sleeve, etc.]

Abstract

A tool for facilitating the assembly of a dust boot or seal with the cylinder and piston of a caliper disc brake actuator, comprising a pair of allochirally arranged bars pivoted together to define relatively long handle sections and relatively short distal sections, the distal sections carrying mating plates shaped as part-circular arcs, the plates being arranged to define an oval when their distal tips are in contact and to lie in a common circle when their tips are separated, the plates being formed with external grooves lying in a plane perpendicular to the axis of such common circle and adapted to receive an internal bead at the proximal end of such a boot for radially expanding and longitudinally extending the boot, and resilient means resisting separation of the plates.

Description

United States Patent [19 1 Gregg et a1.

I 54 SEAL ASSEMBLY TOOL [75] Inventors: Jack C. Gregg, Elwood; Max D.

White, Noblesville, both of Ind.

[73] Assignee: G & D Tool Company, Inc., Elwood,

Ind. 1

221 Filed: Aug. 3, 1973 21 Appl. No.: 386,286

[52] U.S. Cl. 29/235 [51] Int. Cl. 323p 19/02 [58] Field of Search 29/235, 235.5

[56] References Cited UNITED STATES PATENTS 544,268 8/1895 Unsinger et al .Q .1 29/235 1,806,339 5/1931 Ferris et al 29/235 3,233,313 2/1966 Roth 29/235 FOREIGN PATENTS OR APPLICATIONS 237.824 l/1962 Australia 29/235 686,434 1/1953 Great Britain 29/235 [111 3,866,299 1' Feb. 18, 1975 Primary Examiner.lames L Jones, Jr. Attorney, Agent, or Firm-William R. Coffey [57] ABSTRACT A tool for facilitating'the assembly of a dust boot or seal with the cylinder and piston of a caliper. disc brake actuator, comprising a pair of allochirally arranged bars pivoted together to define relatively long handle sections and relatively short distal sections, the distal sections carrying mating plates shaped as part circular arcs, the plates being arranged to define an oval when their distal tips are in contact and to lie in a common circle when their tips are separated, the plates being formed with external grooves lying in a plane perpendicular to the axis of such common circle and adapted to receive an internal bead at the proximal end of such a boot for radially expanding and longitudinally extending the boot, and resilient means resisting separation of the plates.

1 Claim, 6 Drawing Figures PAIENTEI] FEB 1 8 I975 sum 10F 2 1 SEAL ASSEMBLY TOOL The present invention relates to an applicator tool for facilitating the installation of a seal or boot between the open end of a cylinder and the outer end of a piston reciprocable in the cylinder; and the primary object of the invention is to provide a novel tool specifically designed to perform that function. Further objects of the invention will appear as the description proceeds.

To the accomplishment of the above and related objects, our invention may be embodied in the form illustrated in the accompanying drawings, attention being called to the fact, however, that the drawings are illustrative only, and that change may be made in the specific construction illustrated and described, so long as the scope of the appended claims is not violated.

In the drawings: 7

FIG. 1 is an exploded, somewhat diagrammatic longitudinal section of a caliper housing for a known power disc brake assembly, a piston for cooperation therewith and a known form of boot;

FIG. 2 is an enlarged, fragmentary section through such a boot;

FIG. 3 is a section similar to FIG. 1, showing the piston partially entered in the cylinder and showing our tool in use in an intermediate stage of manipulation to make the operative connection between the boot and the piston;

FIG. 4 is a similar section, showing the parts fully assembled;

FIG. 5 is an elevationof our improved tool; and

FIG. 6 is a section taken on the line66 of FIG. 5.

Referring more particularly to thedrawings, it will be,

seen that we have illustrated a conventional caliper housing 10 formed to provide a cylinder 11. Near the open end of the cylinder, there is provided an inwardly.- opening peripheral groove 12 and between the groove 12 and the open end of the cylinderis provided a further internally opening groove 13. Conventionally, an

O ring or similar packing 14 is installed in the groove The configuration of the boot'lS is illustrated in FIG.

significantly smaller diameter than does the bead 18,

difficulty will be encountered in entering the piston 16 past the bead 22 without rolling the portion 20, 21, 22

axially inwardly. It is to overcome that difficulty that we have devised the tool of the present disclosure.

The toolis best illustrated in FIGS. 5 and 6 wherein it is generally designated by the reference numeral 23. The tool comprises allochirally arranged bars 24 and 25 each having a handle portion 26 or 27 and a shorter, I distal'portion 28 and 29. The bar 24 is provided with arms 30, 31 while the bar 27 is provided with arms 32, 33 so spaced'as to be received between the arms 30 and 31 when the two bars arebrought into facing relation.

into contact'with the handle portions 26 and 27 to biasthe handle portions away from each other and the portions 28 and 29 toward each other.

Suitably secured, as by welding, for instance, to the distal regions of the tool are mating, arcuate plates 38 and 39. Each of these plates is part circular but somewhat less than semi-circular so that, when their distal regions are in contact under the influence of the spring arms 36 and 37, the mating plates define an oval figure. However, when the handle portions 26 and 27 are pressed toward each other against the tendency of the spring 35, the plates 38 and 39 will be separated so that distal they may lie in a common circle slightly larger than the' outside periphery of the piston 16.

As is most clearly shown in FIGS. 3 and 6, the axial dimension of the plates 38 and 39 tapers from their ends nearer the sections 28 and 29.. 7

At or nearits end remote from the taper, each plate 38 or 39 is formed with a peripheral, outwardly opening groove 40, the cross-section of which closely approximates the cross-section of the groove 17 of the v piston 16.

In use, the ring or seal 14 is installed by hand. Then, the bead 18 is. manually tucked into the groove 13. Now, with the plates 38 and 39 in their solid line position of FIG. 5, the rolled portion 21, 22 of the boot 15 is rolled outwardly and the bead 22 is slipped over the forward end of the tool 23 and worked into the groove 40. Preferably, the interior surface of the boot and theexterior surface of the tool will be somewhat lubricated with, for instance, conventional brake fluid.

At this time, the tool orifice will be substantially in register with the open end of the cylinder 11. Now, the handle portions of the tool will be squeezed to expand the orifice between the plates 38 and 39, thereby likewise expanding the left-hand end portions of the boot 15. The piston 16 is then introduced through the tool orifice and into-sealing engagement with the ring 14. The tool is now moved toward the left completely to straighten the rolled portion 21 of the boot and, in some cases, to stretch the elastic boot longitudinally, care being-taken not to dislodge the bead 18. When the right-hand extremity of the plates 38 and 39 has passed the groove 17 in the piston, (or the piston has been manually moved to the right to cause the groove 17 to pass the plate extremities) then the bead 22 will snap or be worked off the end of the tool and will enter the groove 17 to complete the assembly of the boot between .the cylinder andthe piston.

Now, that the tool has been completely released from the boot, the boot will tend to return to the equilibrium position illustrated in FIG. 2, thus drawing the piston 16 more deeply into the cylinder 11, as indicated in FIG. 4.

We claim:

1. For use with a power disc brake cylinder having an open end with an inwardly-opening peripheral groove near said open end and spaced axially outwardly from said cylinder open end and partially obstructing access to said open' end, an outboard shoe support bracket formed integrally with said cylinder, a piston for reciprocation .in said cylinder and insertable through said open end, said piston being formed with an outwardlyopening peripheral groove near its proximal end, and a sealing gasket including an external peripheral'bead at one end receivable in said first-named groove, and an internal peripheral bead at its other end receivable in said piston groove; the invention which consists of a pair of allochirally related bars, each having a handle portion and a distal portion, means pivotally connecting said bars together so that movement of said handle portions toward each other separates said distal portions, and each of said distal portions being partsaid distal portions, when separated to a predetermined degree, lying in a common circle having a diameter slightly exceeding the outer diameter of said piston whereby said piston may be axially entered through the orifice defined by said distal portions.

Claims (1)

1. For use with a power disc brake cylinder having an open end with an inwardly-opening peripheral groove near said open end and spaced axially outwardly from said cylinder open end and partially obstructing access to saId open end, an outboard shoe support bracket formed integrally with said cylinder, a piston for reciprocation in said cylinder and insertable through said open end, said piston being formed with an outwardly-opening peripheral groove near its proximal end, and a sealing gasket including an external peripheral bead at one end receivable in said first-named groove, and an internal peripheral bead at its other end receivable in said piston groove; the invention which consists of a pair of allochirally related bars, each having a handle portion and a distal portion, means pivotally connecting said bars together so that movement of said handle portions toward each other separates said distal portions, and each of said distal portions being part-circular and having a peripheral extent slightly less than 180* and being formed to provide an outwardly opening, peripherally coextensive groove for receiving said internal bead, means resiliently biasing said handle portions away from each other, and the inner surfaces of said distal portions, when separated to a predetermined degree, lying in a common circle having a diameter slightly exceeding the outer diameter of said piston whereby said piston may be axially entered through the orifice defined by said distal portions.
US38628673 1973-08-03 1973-08-03 Seal assembly tool Expired - Lifetime US3866299A (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4220374A (en) * 1977-12-08 1980-09-02 Automotive Products Limited Method for locating annular seals and article produced thereby
US4733454A (en) * 1986-07-15 1988-03-29 Akebono Brake Industry Co., Ltd. Method for integrating a boot piston into a disk brake
EP0498929A1 (en) * 1991-02-09 1992-08-19 CR Elastomere GmbH Mounting tool for lip seals
US5457865A (en) * 1993-07-23 1995-10-17 Nissin Kogyo Co., Ltd. Automatic boot mounting apparatus and method of automatically mounting a boot with the apparatus
US20050086802A1 (en) * 2003-10-23 2005-04-28 Lang Joseph C. Seal reforming method and apparatus
FR2874344A1 (en) * 2004-08-17 2006-02-24 Cms Automatisme Sarl Seal ring`s lip placing method for brake caliper, involves plating deformed ring against opening of bore and against wall of bore when non-engaged part of lip is aligned with groove, and pushing ring into bore
US7158078B2 (en) * 2002-04-18 2007-01-02 Fujitsu Limited Positioning of mobile wireless terminal
US20130180097A1 (en) * 2010-10-15 2013-07-18 Illinois Tool Works Inc. Device and method for fastening a component comprising at least one opening on a carrier part
US20140250657A1 (en) * 2013-03-08 2014-09-11 Apple Inc. Installing components in housings
CN105922190A (en) * 2016-06-29 2016-09-07 中国人民解放军第五七〇六工厂 Mounting guider of aircraft carbon brake disc
US9451354B2 (en) 2014-05-12 2016-09-20 Apple Inc. Liquid expulsion from an orifice
US9820033B2 (en) 2012-09-28 2017-11-14 Apple Inc. Speaker assembly
US9900698B2 (en) 2015-06-30 2018-02-20 Apple Inc. Graphene composite acoustic diaphragm
US10063951B2 (en) 2010-05-05 2018-08-28 Apple Inc. Speaker clip
DE102018124614A1 (en) * 2018-10-05 2020-04-09 Bayerische Motoren Werke Aktiengesellschaft Dismantling tool and method for dismantling shafts

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US544268A (en) * 1895-08-06 Bulb or tube stretcher or expander
US1806339A (en) * 1930-08-07 1931-05-19 Wheaton C Ferris Expanding device
US3233313A (en) * 1963-07-22 1966-02-08 William R Roth Tube applicator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US544268A (en) * 1895-08-06 Bulb or tube stretcher or expander
US1806339A (en) * 1930-08-07 1931-05-19 Wheaton C Ferris Expanding device
US3233313A (en) * 1963-07-22 1966-02-08 William R Roth Tube applicator

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4220374A (en) * 1977-12-08 1980-09-02 Automotive Products Limited Method for locating annular seals and article produced thereby
US4733454A (en) * 1986-07-15 1988-03-29 Akebono Brake Industry Co., Ltd. Method for integrating a boot piston into a disk brake
EP0498929A1 (en) * 1991-02-09 1992-08-19 CR Elastomere GmbH Mounting tool for lip seals
US5457865A (en) * 1993-07-23 1995-10-17 Nissin Kogyo Co., Ltd. Automatic boot mounting apparatus and method of automatically mounting a boot with the apparatus
US5611131A (en) * 1993-07-23 1997-03-18 Nissin Kogyo Co., Ltd. Automatic boot mounting apparatus
US7158078B2 (en) * 2002-04-18 2007-01-02 Fujitsu Limited Positioning of mobile wireless terminal
US20050086802A1 (en) * 2003-10-23 2005-04-28 Lang Joseph C. Seal reforming method and apparatus
US7017268B2 (en) 2003-10-23 2006-03-28 Skf Usa Inc. Seal reforming method and apparatus
FR2874344A1 (en) * 2004-08-17 2006-02-24 Cms Automatisme Sarl Seal ring`s lip placing method for brake caliper, involves plating deformed ring against opening of bore and against wall of bore when non-engaged part of lip is aligned with groove, and pushing ring into bore
US10063951B2 (en) 2010-05-05 2018-08-28 Apple Inc. Speaker clip
US20130180097A1 (en) * 2010-10-15 2013-07-18 Illinois Tool Works Inc. Device and method for fastening a component comprising at least one opening on a carrier part
US10253794B2 (en) * 2010-10-15 2019-04-09 Illinois Tool Works Inc. Device and method for fastening a component comprising at least one opening on a carrier part
US9820033B2 (en) 2012-09-28 2017-11-14 Apple Inc. Speaker assembly
US20140250657A1 (en) * 2013-03-08 2014-09-11 Apple Inc. Installing components in housings
US9451354B2 (en) 2014-05-12 2016-09-20 Apple Inc. Liquid expulsion from an orifice
US10063977B2 (en) 2014-05-12 2018-08-28 Apple Inc. Liquid expulsion from an orifice
US9900698B2 (en) 2015-06-30 2018-02-20 Apple Inc. Graphene composite acoustic diaphragm
CN105922190B (en) * 2016-06-29 2018-01-23 中国人民解放军第五七〇六工厂 A kind of installation guider of airplane carbon brake disc
CN105922190A (en) * 2016-06-29 2016-09-07 中国人民解放军第五七〇六工厂 Mounting guider of aircraft carbon brake disc
DE102018124614A1 (en) * 2018-10-05 2020-04-09 Bayerische Motoren Werke Aktiengesellschaft Dismantling tool and method for dismantling shafts

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