US3040420A - Snap ring pliers - Google Patents

Snap ring pliers Download PDF

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Publication number
US3040420A
US3040420A US1996A US199660A US3040420A US 3040420 A US3040420 A US 3040420A US 1996 A US1996 A US 1996A US 199660 A US199660 A US 199660A US 3040420 A US3040420 A US 3040420A
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United States
Prior art keywords
pliers
snap ring
tip
shank
sided
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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
Application number
US1996A
Inventor
Harry W Kulp
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K-D Manufacturing Co
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K-D Manufacturing Co
Priority date (The priority date 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 date listed.)
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Publication date
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Priority to US1996A priority Critical patent/US3040420A/en
Application granted granted Critical
Publication of US3040420A publication Critical patent/US3040420A/en
Anticipated expiration legal-status Critical
Assigned to FIRST NATIONAL BANK OF BOSTON reassignment FIRST NATIONAL BANK OF BOSTON SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: EASCO CORPORATION
Assigned to BANCBOSTON FINANCIAL COMPANY, FIRST NATIONAL BANK OF BOSTON THE reassignment BANCBOSTON FINANCIAL COMPANY SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: EASCO HAND TOOLS, INC. A MA CORP
Expired - Lifetime legal-status Critical Current

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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
    • B25B27/14Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/20Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same inserting or withdrawing split pins or circlips
    • B25B27/205Pliers or tweezer type tools with tow actuated jaws
    • 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
    • Y10T29/53613Spring applier or remover
    • Y10T29/5363Circular spring

Description

June 26, 1962 H. W. KULP SNAP RING-PLIERS 2 Sheets-Sheet 1 Filed Jan. 12, 1960 50 5 FIG-7:10-
I NVENTOR.
ATTORNEYS.
June 26, 1962 w, KULP 3,040,420
SNAP RING PLIERS Filed Jan. 12, 1960 2 Sheets-Sheet 2 INVENTOR.
filly MAW/ @J: GL1
A TTORNEYS.
3,49,42 Patented June 26, 1962 3,940,420 SNAP RING PLIERS Harry W. Kuip, Lancaster, Pa, assignor to K-D Manufactnring (Iornpany, Lancaster, Pa, a corporation of Pennsylvania Filed Jan. 12, 1960, Ser. No. 1,996
10 Claims. ('Cl. 29--229) This invention relates to pliers particularly adapted for use with snap rings.
As is well known, snap rings are open-ended retaining rings which if for external use are tensioned against spreading and if for internal use are tensioned against contraction.
For handling the rings, that is for spreading external snap rings or contracting internal snap rings, the open ends of the rings are ordinarily provided with ears having holes therein for receiving the nose points of snap ring pliers.
The pliers of my present invention are particularly adapted for use with rings of different sizes having ears with apertures of difierent sizes at their open ends. In one form, the snap ring pliers of my present invention is a pliers-type tool having interchangeable nose points with different size tips adapted to be inserted in the apertures of corresponding size in the ears of an external snap ring so that the ring can be readily spread open, slipped over a shaft, and moved axially therealong to its seating groove or recess. In another form, the snap ring pliers of the present invention is a pliers-type tool having interchangeable nose points with different size tips adapted to be insorted in the apertures of corresponding size in the ears component which tends to prevent the ring from rising up the points and slipping off and which also tends to prevent snaking of the ring, i.e., twisting and excessive distortion.
The invention will be clear from a consideration of the following specification taken together with the drawing in which:
FIG. 1 is a top view of one form of pliers embodying the present invention and used for spreading external snap rings;
FIG. 2 is an end view along the line indicated IIII in FIG. 1;
FIG. 3 is a bottom view of the pliers of FIG. '1 as seen along the line IIIIII of FIG. 2.
FIG. 4 is a detailed view of the plier jaws with jaw plates removed, as seen along the line IVIV of FIG. 2;
FIG. 5 is a cross-sectional view of the pliers as seen along the line V'V of PEG. 1;
FIG. 6 is a sectional view. looking along the line VI.
VI of FIG. 1;
FIG. 7 is an exploded View of parts of the pliers of FIG. 1 showing the lever arms, the jaw plates and the lever spring;
FIG. 8 is an illustration showing a shaft over the end of which an external snap spring is being placed by the pliers of FIG. 1;
FIG. 9 is a sectional view as seen along the lines IX- IX of FIG. 8;
FIGS. 10, 11 and 12 are illustrations of some of the various forms of replaceable points which may be used in the jaws of the pliers of FIG. 1 or FIG. 13;
- FIG. 13 is a top view of another form of pliers embodying the present invention and used for contracting internal snap rings.
FIG. 14 is an exploded view showing the configuration of the lever arms of the internal snap ring pliers of FIG. 13, the other parts of the pliers not being shown since they are similar to those of the external snap ring pliers of FIG. 1 as shown in FIG. 7; and
FIG. 15 is an illustration of a shaft into which an internal snap ring is being placed by the pliers of FIG. 13.
In describing the preferred embodiments of the invention illustrated in the drawing, specific terminology has been resorted to for the sake of clarity. However, it is not the intention to be limited to the specific terms so se lected, and it is to be understood that each specific term includes all technical equivalents which operate in a similar manner to accomplish a similar purpose. Referring now to the drawing, and particularly to FIGS. 1 through 10, the external snap ring pliers 36 are shown to comprise a pair of levers 32 and 34 shaped as shown in FIG. 7, each having at one end thereof a pair of spaced-apart holes for receiving rivets or the like for securing the extensions or handles 36, 33 to the levers as seen in FIG. :1. The other end of each lever 32, 34 terminates in a jaw 481B, 42. Levers 32, 34 are pivotally connected, as by a pin 44 (FIGS. 1 and 6), extending through bosses 46, 48 (FIG. 7) formed on the levers. A bias spring 5! tends to keep the handle end of the levers spread apart and the jaws closed.
As the handles 36 and 38 are brought together by the hand of the operator against the tension of spring 5t), the
studs 52, 54, in the levers 32, 34, move within the grooves or notches 56, 58 provided in the bosses 48, 46. The studs 52, 54, and notches 56, 58 limit the extent to which the jaws 4t), 42 may be spread.
In accordance with a preferred form of my present invention, each of the jaws 40, 42 is provided with a flatsided (preferably three-sided) groove 64 62, respectively, as seen in FIG. 7. A removable jaw plate 64, 56 (shown in turned-over position in FIG. 7) is provided for each jaw and adapted to be placed upon and secured to its re spective jaw, as by screws. The underside of each jaw plate 64, 66 is provided with a flat-sided (preferably three-sided) groove in a position to be coaxial and coextensive with the flat-sided (three-sided) groove in its respective jaw when the jaw plate is secured in position, whereby a fiat-sided (preferably six-sided or hexagonal) socket 73, "75, as seenin FIG. 5, is available in each jaw for receiving the flat-sided (hexagonal) shaft of one of the points of the type illustrated in FIGS. 10, 11 and 12.
In accordance with my present invention, the points 76, 78 and 80, shown in FIGS. 10, 11 and 12, each have shanks 82, 84 and 36 of fiat-sided (preferably hexagonal) cross section adapted to fit in the fiat-sided (hexagonal) sockets 73, 75 formed by each jaw and jaw plate, as just described. The use of fiat-sided (preferably hexagonal) sockets and fiat-sided (preferably hexagonal) shafts provides increased resistance to radial displacement and prevents turning of the points during spreading (or contracting) of the snap ring. This is advantageous, particularly where points with angled shafts are used, as shown in FIGS. 11 and 12.
In accordance with my present invention, each point is provided with a tip 87, 88 and 89 integral with the shank as shown in FIGS.J10, '11, 12, of circular cross'section but reverse tapered with the largest diameter being at the extremity of the tip and the smaller diameter being at the junction of the tip with the shank, thus forming the shoulders clearly visible in FIGS. 10-12. The tips 87, 88, 89 are available in different sizes corresponding to the size of the aperture in the ears of the snap ring to be handled. The shanks 82, 84, 36 are of common size.
The employment of a frusto-conical tip on the point is an important feature of my present invention. I have found that the employment of a reverse-tapered or frustoconical tip of the proper size gives, in the case of external snap ring pliers, a marked improvement in the ability of each tip to remain in its respective hole in the snap ring during spreading of the ring, and also While the ring is held spread. I have found that such tips also prevent excessive twisting or snaking of the ring. It will be seen from FIGS. 8 and 9 that, in the case of an external ring, as the jaws of the pliers are opened in the directions indicated by the arrows in FIG. 8, the tapered outer edge H, 93 of the frusto-conical tip 87 exerts on the outer edge of the hole in the snap ring 45, a force having a downward as well as an outward component, thereby tending to prevent the ring 95 from moving up on the tip 8'7, and tending to force the face of the ring against the shoulder of the point '76. Thus, in FIG. 8, the snap ring 95 is thrust against the shoulders of the point and in this manner is held firmly and substantially free of snaking on the tips of the pliers while the ring is being placed over the shaft $6 and moved axially therealong to its seating recess 97.
Referring now to FIGS. 13, 14 and 15, the internal snap ring pliers 31 of FIG. 13 are shown to comprise a pair of lever arms 33 and 35 having secured at one end thereof extensions or handles 37, 39, as seen in FIG. 13, and terminating at the other end in a pair of jaws 41, 43. Between the handle end of each lever and the jaw is a boss 47, 49 through which a pin 45 (FIG. 13) is placed and about which the levers pivot. It will be seen that when the lever arms 33, 35 are pivotally connected by the pin 45 the arms cross at the pivot point so that when the handle ends of the levers are maintained spread, as by the spring 51, the jaws 41, 43 are also spread.
As in the case of the external snap ring pliers of FIG. 1, each jaw of the internal snap ring pliers of FIG. 13 is provided with a flat-sided (three-sided) groove 61, 63, and with a jaw plate (not shown in FIG. 14) which is similar to the jaw plate shown in FIG. 7. When the jaw plate is in position, the flat-sided (three-sided) groove in the jaw plate is coaxial and coextensive with the flat-sided (three-sided) groove in the jaw, thereby forming-a flatsided (hexagonal) socket, as previously described in connection with FIGS. and 7, into which the shank of one of the points of the type shown in FIGS. 10, l1 and 12 may be inserted.
As in the case of the external snap ring pliers, when points of the types shown in FIGS. 10, 11 and 12 and of proper tip size, are used in the internal snap ring pliers of FIG. 13, and the jaws of the pliers are moved together in the directions of the arrows shown in FIG. 15, the tapered inner side of each frusto-conical tip, such as of tip 87 of FIG. 10, exerts on the inner side of the wall of each snap-ring hole a force having a downward component as well as an inward component, the downward component forcing the face of the ring against the shoulder of the point and playing an important role in tending to keep the snap ring on the tips of the pliers during contracting of the ring and also while the ring is held contracted. The action is such as also to prevent excessive twisting or snaking of the ring. Thus, as illustrated in FIG. 15, the snap ring 98 is thrust against the shoulder of the point 76 and in this manner is held firmly and substantially free of snaking on the tips of the pliers while the ring is being placed within the bore 99 of a shaft and moved axially therealong to its seating groove 100.
It will be seen from the foregoing that I have provided snap ring pliers adapted to handle a variety of sizes of snap rings and with substantially improved results. The
fact that the pliers accept interchangeable points enables the same pliers not only to handle different size rings but also permits various angle points to be interchanged in order to reach rings which would otherwise be inaccessible. And, of course, damaged or broken points can be replaced.
While the preferred embodiments of this invention have been described in some detail, it will be obvious to one skilled in the art that various modifications may be made without departing from the invention as hereinafter claimed.
Having thus described my invention, 1 claim:
1. A pliers-type tool for a snap ring, said snap ring having apertured ears at its open ends, said tool having a pair of jaws at its forward end and means at each of its jaws securely holding a replaceable point against axial and radial displacement, each of said points having a relatively long shank and relatively short tip, the sides of said shank having a plurality of flat surfaces, said tip having a circular cross section of continually increasing diameter from the inner to the outer end of the tip, the smaller diameter of said tip being less than that of said shank, thus forming a shoulder at the location where said tip joins said shank.
2. A pliers-type tool as claimed in claim 1 characterized in that the diameter of said outer end of said tip is substantially equal to that of the aperture in the ear of the snap ring.
3. A pliers-type tool as claimed in claim 1 characterized in that said shank is of hexagonal cross section.
4. A pliers-type tool as claimed in claim 2 characterized in that said shank is of hexagonal cross section.
5. A pliers-type tool as claimed in claim 4 characterized in that the shank of said point is bent at an angle.
6. A pliers-type tool for a snap ring, said snap ring having apertured ears at its open ends, said tool having a pair of jaws at its forward end each of which has an elongated flat-sided groove therein, a jaw plate for each of said jaws, said jaw plate having an elongated flat-sided groove therein, means for securing each of said jaw plates to one of the jaws of said tool such that the fiat-sided groove in said jaw plate is substantially coaxial and coextensive with the fiat-sided groove in the jaw, thereby to form an elongated flat-sided socket in the nose of each jaw of said tool, a point securely held in each socket, each of said points have a relatively long shank and a relatively short tip, said shank having a flat-sided cross section, said securing means being adapted to tighten said jaw plate against the relatively long shank of said point in said socket, the flat sides of said elongated grooves in said jaw and jaw plate pressing against the flat sides of said shank, said tip having a circular cross section of continually increasing diameter from the inner to the outer end of the tip, the smaller diameter of said tip being less than that of said shank, thus forming a shoulder at the location where said tip joins said shank.
7. A pliers-type tool as claimed in claim 6 characterized in that the diameter of the outer end of said tip is substantially equal to that of the aperture in the ear of said ring.
8. A pliers-type tool as claimed in claim 6 characterized in that said socket and said shank are hexagonal.
9. External snap ring pliers adapted for spreading an external snap ring, said snap ring having apertured ears at its open ends, said pliers comprising a pair of levers pivotally connected by a pin extending through bosses formed on the levers, said levers terminating at one end in a pair of jaws held normally closed by a biasing spring operating on said levers, each of said jaws having means for securely holding an interchangeable point against axial and radial displacement, said point having a relatively long shank and a relatively short tip, said shank having an hexagonal cross section, said tip having a frusto-conical configuration with the larger diameter at the outer end, the smaller diameter of said tip being less than that of said shank, thus forming a shoulder at the location where said tip joins said shank.
10. Internal snap ring pliers adapted for contracting 5 an internal snap ring, said snap ring having apertured cars at its open ends, said pliers comprising a pair of levers pivotally connected by a pin extending through bosses formed on the levers, said levers terminating at one end in a pair of jaws held normally open by a biasing spring operating on said levers, each of said jaws having means securely holding an interchangeable point against axial and radial displacement, said point comprising a relatively long shank and a relatively short tip, said shank having an hexagonal cross section, said tip having a frusto-conical configuration with the larger diameter at the outer end, the smaller diameter of said tip being less than that of said shank, thus forming a shoulder at the location where said tip joins said shank.
References Cited in the file of this patent UNITED STATES PATENTS 1,978,210 Lovekin Oct. 23, 1934 2,196,441 Knapp Apr. 9, 1934 2,271,064 Dolph Jan. 27, 1942 2,483,383 Heimann et al. Sept. 27, 1949 2,553,620 Yeazell May 22, 1951 2,601,547 Minock June 24, 1952 2,792,622 Wurzel May 21, 1957
US1996A 1960-01-12 1960-01-12 Snap ring pliers Expired - Lifetime US3040420A (en)

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Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3153957A (en) * 1963-04-30 1964-10-27 K D Mfg Co Bulb pliers
US3390445A (en) * 1965-12-03 1968-07-02 Jacob W. Sova Sr. Expanding and contracting tools
US3446212A (en) * 1965-07-19 1969-05-27 New Research & Dev Lab Inc Hemostatic clip and applicator therefor
US3484924A (en) * 1967-05-22 1969-12-23 Frank L Dahl Retaining and snap-ring pliers with selectively usable tip means for cooperation with various different retaining and/or snap rings
US3521510A (en) * 1968-05-22 1970-07-21 Crescent Niagara Corp Spring opened pliers
US3602973A (en) * 1968-04-10 1971-09-07 Samuel G Mata Brake shoe spreading hand tool
US3762019A (en) * 1971-05-20 1973-10-02 Kastar Inc Convertible plier-type tool
US3813750A (en) * 1972-09-19 1974-06-04 R Kerr Implement for manipulation of snap rings
US3919903A (en) * 1974-05-06 1975-11-18 Edgar O Mcalister Nail holder
FR2547233A1 (en) * 1983-06-07 1984-12-14 Murphy James TRANSFORMABLE CLAMPS FOR HOLDING A RING
EP0181209A1 (en) * 1984-11-08 1986-05-14 Milbar Corporation Retaining ring tool
DE3531847A1 (en) * 1985-09-06 1987-03-19 Seeger Orbis Gmbh Circlip pliers
US4790056A (en) * 1984-11-08 1988-12-13 Milbar Corporation Retaining ring tool
US4793224A (en) * 1987-06-03 1988-12-27 Huang Hsin Teh Combination retaining ring fitting tool
US5079977A (en) * 1989-07-07 1992-01-14 Petrie John A Retaining ring tools
US5174177A (en) * 1987-05-07 1992-12-29 Milbar Corporation Reversible snap ring pliers
US5483732A (en) * 1994-10-04 1996-01-16 Wang; Tian S. Variable C-shaped retaining ring pliers
US5542167A (en) * 1994-10-14 1996-08-06 Iwata Denko Co., Ltd. Device for attaching/detaching shaft snap ring and hole snap ring
US5794495A (en) * 1996-09-25 1998-08-18 Oklahoma Gas & Electric Company Animal guard applicator
US6244147B1 (en) * 1998-09-02 2001-06-12 The E. H. Wachs Company Weld sample cutter
US20050262973A1 (en) * 2004-06-01 2005-12-01 Min-Chi Yu Tool equipped with a turnable driving head
US20060161182A1 (en) * 2005-01-19 2006-07-20 Applied Medical Resources Corporation Single fire vascular clip applier with disposable jaw
GB2425748A (en) * 2005-05-04 2006-11-08 Tien-Shui Wang Pair of pliers for snap rings
US20080264216A1 (en) * 2004-06-14 2008-10-30 Seamus Duffy Snap Ring Pliers
DE102009059701A1 (en) * 2009-12-18 2011-06-22 Wiha Werkzeuge GmbH, 78136 Gripper for inserting snap rings, comprises two grip portions, which have longitudinal axis and operating end, where operating end is formed as pin, which is arranged at grip portions
US20110173862A1 (en) * 2010-01-15 2011-07-21 Nicholas Williams Multi-purpose tool
USD738174S1 (en) * 2014-04-24 2015-09-08 A & E Incorporated Locking pliers
USD742194S1 (en) * 2014-04-24 2015-11-03 A & E Incorporated Locking pliers
US20170259415A1 (en) * 2016-03-14 2017-09-14 Alexander Leslie Snap Ring Manipulation Tool
US20190118347A1 (en) * 2017-10-23 2019-04-25 Min-Zheng Zeng Replacement structre of pair of pliers
US20190247765A1 (en) * 2018-02-15 2019-08-15 Maison Battat Inc. Toy housing structure and tool for disassembling toy housing

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1978210A (en) * 1931-05-28 1934-10-23 George E Lovekin Tool
US2196441A (en) * 1938-12-01 1940-04-09 Prosper R Knapp Baby's nipple tongs
US2271064A (en) * 1939-04-06 1942-01-27 Edward A Dolph Nipple-applying tool
US2483383A (en) * 1946-01-29 1949-09-27 Waldes Kohinoor Inc Tool for handling open-ended spring retaining rings
US2553620A (en) * 1947-09-16 1951-05-22 Yeazell William Olds Parallel expanding-jaw pliers
US2601547A (en) * 1950-11-13 1952-06-24 Robert M Minock Expander tool for elastic bands
US2792622A (en) * 1954-03-16 1957-05-21 Waldes Kohinoor Inc Circular spring removing tool

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1978210A (en) * 1931-05-28 1934-10-23 George E Lovekin Tool
US2196441A (en) * 1938-12-01 1940-04-09 Prosper R Knapp Baby's nipple tongs
US2271064A (en) * 1939-04-06 1942-01-27 Edward A Dolph Nipple-applying tool
US2483383A (en) * 1946-01-29 1949-09-27 Waldes Kohinoor Inc Tool for handling open-ended spring retaining rings
US2553620A (en) * 1947-09-16 1951-05-22 Yeazell William Olds Parallel expanding-jaw pliers
US2601547A (en) * 1950-11-13 1952-06-24 Robert M Minock Expander tool for elastic bands
US2792622A (en) * 1954-03-16 1957-05-21 Waldes Kohinoor Inc Circular spring removing tool

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3153957A (en) * 1963-04-30 1964-10-27 K D Mfg Co Bulb pliers
US3446212A (en) * 1965-07-19 1969-05-27 New Research & Dev Lab Inc Hemostatic clip and applicator therefor
US3390445A (en) * 1965-12-03 1968-07-02 Jacob W. Sova Sr. Expanding and contracting tools
US3484924A (en) * 1967-05-22 1969-12-23 Frank L Dahl Retaining and snap-ring pliers with selectively usable tip means for cooperation with various different retaining and/or snap rings
US3602973A (en) * 1968-04-10 1971-09-07 Samuel G Mata Brake shoe spreading hand tool
US3521510A (en) * 1968-05-22 1970-07-21 Crescent Niagara Corp Spring opened pliers
US3762019A (en) * 1971-05-20 1973-10-02 Kastar Inc Convertible plier-type tool
US3813750A (en) * 1972-09-19 1974-06-04 R Kerr Implement for manipulation of snap rings
US3919903A (en) * 1974-05-06 1975-11-18 Edgar O Mcalister Nail holder
FR2547233A1 (en) * 1983-06-07 1984-12-14 Murphy James TRANSFORMABLE CLAMPS FOR HOLDING A RING
US4790056A (en) * 1984-11-08 1988-12-13 Milbar Corporation Retaining ring tool
US4621401A (en) * 1984-11-08 1986-11-11 Milbar Corporation Retaining ring tool
US4625379A (en) * 1984-11-08 1986-12-02 Milbar Corporation Retaining ring tool
EP0181209A1 (en) * 1984-11-08 1986-05-14 Milbar Corporation Retaining ring tool
DE3531847A1 (en) * 1985-09-06 1987-03-19 Seeger Orbis Gmbh Circlip pliers
US5174177A (en) * 1987-05-07 1992-12-29 Milbar Corporation Reversible snap ring pliers
US4793224A (en) * 1987-06-03 1988-12-27 Huang Hsin Teh Combination retaining ring fitting tool
US5079977A (en) * 1989-07-07 1992-01-14 Petrie John A Retaining ring tools
US5483732A (en) * 1994-10-04 1996-01-16 Wang; Tian S. Variable C-shaped retaining ring pliers
US5542167A (en) * 1994-10-14 1996-08-06 Iwata Denko Co., Ltd. Device for attaching/detaching shaft snap ring and hole snap ring
US5794495A (en) * 1996-09-25 1998-08-18 Oklahoma Gas & Electric Company Animal guard applicator
US6244147B1 (en) * 1998-09-02 2001-06-12 The E. H. Wachs Company Weld sample cutter
US20050262973A1 (en) * 2004-06-01 2005-12-01 Min-Chi Yu Tool equipped with a turnable driving head
US6976412B1 (en) * 2004-06-01 2005-12-20 Min-Chi Yu Tool equipped with a turnable driving head
US20080264216A1 (en) * 2004-06-14 2008-10-30 Seamus Duffy Snap Ring Pliers
US7842045B2 (en) * 2005-01-19 2010-11-30 Applied Medical Resources Corporation Single fire vascular clip applier with disposable jaw
US20060161182A1 (en) * 2005-01-19 2006-07-20 Applied Medical Resources Corporation Single fire vascular clip applier with disposable jaw
GB2425748A (en) * 2005-05-04 2006-11-08 Tien-Shui Wang Pair of pliers for snap rings
GB2425748B (en) * 2005-05-04 2007-04-18 Tien-Shui Wang Pair of pliers for snap rings
DE102009059701B4 (en) * 2009-12-18 2013-05-16 Wiha Werkzeuge Gmbh Pliers for inserting retaining rings
DE102009059701A1 (en) * 2009-12-18 2011-06-22 Wiha Werkzeuge GmbH, 78136 Gripper for inserting snap rings, comprises two grip portions, which have longitudinal axis and operating end, where operating end is formed as pin, which is arranged at grip portions
CN102101279A (en) * 2009-12-18 2011-06-22 威汉工具有限公司 Pliers used for installing fixed ring
US20110173862A1 (en) * 2010-01-15 2011-07-21 Nicholas Williams Multi-purpose tool
US8650791B2 (en) 2010-01-15 2014-02-18 The Otis Patent Trust Multi-purpose tool
USD738174S1 (en) * 2014-04-24 2015-09-08 A & E Incorporated Locking pliers
USD742194S1 (en) * 2014-04-24 2015-11-03 A & E Incorporated Locking pliers
US20170259415A1 (en) * 2016-03-14 2017-09-14 Alexander Leslie Snap Ring Manipulation Tool
US10272551B2 (en) * 2016-03-14 2019-04-30 Alexander Leslie Snap ring manipulation tool
US20190118347A1 (en) * 2017-10-23 2019-04-25 Min-Zheng Zeng Replacement structre of pair of pliers
US20190247765A1 (en) * 2018-02-15 2019-08-15 Maison Battat Inc. Toy housing structure and tool for disassembling toy housing

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