EP0037673B1 - Unitary tool mechanism - Google Patents
Unitary tool mechanism Download PDFInfo
- Publication number
- EP0037673B1 EP0037673B1 EP81301248A EP81301248A EP0037673B1 EP 0037673 B1 EP0037673 B1 EP 0037673B1 EP 81301248 A EP81301248 A EP 81301248A EP 81301248 A EP81301248 A EP 81301248A EP 0037673 B1 EP0037673 B1 EP 0037673B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- head
- arms
- beams
- tool
- closure
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B9/00—Hand-held gripping tools other than those covered by group B25B7/00
- B25B9/02—Hand-held gripping tools other than those covered by group B25B7/00 without sliding or pivotal connections, e.g. tweezers, onepiece tongs
Definitions
- This invention relates to a tool having a pair of arms secured at a head for pivotal movement between open and closed conditions, and a resilient member between the arms arranged to bias them towards an open condition.
- Such tools are commonly used as hand tools or pliers for applying force or a cutting action to a work piece, and are also used as mechanisms in assemblies.
- DE-A-2419818 describes a tool having a pair of arms secured at a head for pivotal movement between open and closed conditions and a resilient means between the arms arranged to bias them towards an open condition in which the head, the arms and the resilient means comprise a unitary structure formed in one piece from resilient material, the arms extending from the head in divergent manner and the resilient means comprising a pair of beams extending from respective portions of the arms spaced from the head, inwardly between the arms towards the head to a second head, the beams being adapted, on movement of the arms together, to engage along their lengths from the second head portion.
- a tool as described above is characterised in that, the first and second heads comprise jaw surfaces arranged to be driven together for engagement with a work piece by movement together of the arms and the beams (16, 18) are arranged to engage progressively along their lengths from the second head (4) as the arms (12, 14) are moved together.
- the tool is suitably formed from a resilient plastics material having a high yield strength.
- the tool of Figures 1 to 4 comprises a first head 2 defining a lower jaw surface 6 and a second head 4 defining an upper jaw surface 7 spaced below surface 6.
- the surface 6 is defined at the roof of a cavity in the first head 2 between side walls 8, 10 adapted slidably to receive head 4 between them.
- a pair of arms 12, 14 extend from the head 2 downwardly on opposite sides of the cavity in divergent manner. Initial portions of the arms 12, 14 are of progressively decreasing thickness towards lower thickened end portions 12A, 14A defining handles which can be gripped in a hand in conventional manner.
- the second head 4 is supported from the lower ends of the arms 12, 14 by a pair of arcuate resilient beams 16, 18, convex towards each other and converging upwardly with upper end portions 16B, 18B closely adjacent and integral with the head 4.
- the heads 2, 4, the arms 12, 14, and the beams 16, 18 are integrally formed as a unitary structure, suitably by moulding or by extrusion from a resilient plastics material having a high yield strength. It will be understood that a number of tools may be formed from a single moulding or extrusion having a cross section corresponding to the elevation of Figure 1, and individual tools severed transversely of the length of moulding or extrusion.
- closure of the handle portions 12A, 14A together effects pivotal movement about the head 2 by bending of the thinner portions of the arms 12, 14.
- the arcuate beams 16, 18 progressively engage at their upper portions 16B, 18B and are supported against each other as seen in Figure 2, effectively to increase their length in the direction of arrow 20 and drive the head 4 into the cavity of head 2 towards jaw surface 6.
- the sides 8, 10 of the cavity and the engaged portions of beams 16, 18 resist lateral displacement of the head 4 and maintain its orientation.
- a workpiece may be engaged between the jaw faces 6, 7 and subject to compression.
- the beams 16, 18 are correspondingly subject to compression and the arms 12, 14 to tension. Resilience of the beams and the arms serves to open the tool when the handles are released.
- the head 4 at its underside between the beams 16, 18 is formed with a cylindrical socket 22 extending through the head 4 transversely of its line of action.
- the socket has a restricted opening between the beams 16, 18 and receives a complementary cylindrical head 26A of an upright rail 26 which extends downwardly between the beams 16, 18 and is stiffened by a transverse flange 28 at a rear side of the tool.
- the beams 16, 18 are flattened against the rail 26 as the handles 12, 14 are closed, and the rails serves to support the beams.
- the head 4 is formed at its rear side with an upwardly directed extension 4A which extends slidably through a recess 2A in a rear side of the head 2.
- the extension 4A at its upper end is formed with a further head portion 4B presenting a lower jaw face 4C spaced from and opposed to a jaw face 2B presented by the upper side of head 2.
- a workpiece may be gripped between jaw surfaces 6 and 7 on closure of the tool or between surfaces 4C and 2B on opening of the tool handles.
- the head 2 is formed with an upright bore in which the lower, open end of a cylinder 30 is secured.
- An upright rod 36 is secured to the head 4 and extends coaxially through the lower end of the cylinder 30.
- a washer type piston 38 is secured at the upper end of the rod 36, and the upper closed end 32 of the cylinder is formed with an outlet 34.
- Actuation of the tool causes reciprocation of the piston 38 in the cylinder and alternate compression and suction in the cylinder and its outlet 34, the resilience of the beams 16, 18 effecting opening of the tool and downward movement of the piston 38.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT81301248T ATE5861T1 (de) | 1980-04-03 | 1981-03-24 | Einheitlicher werkzeugmechanismus. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13703580A | 1980-04-03 | 1980-04-03 | |
US137035 | 1980-04-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0037673A1 EP0037673A1 (en) | 1981-10-14 |
EP0037673B1 true EP0037673B1 (en) | 1984-01-18 |
Family
ID=22475530
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81301248A Expired EP0037673B1 (en) | 1980-04-03 | 1981-03-24 | Unitary tool mechanism |
Country Status (12)
Country | Link |
---|---|
EP (1) | EP0037673B1 (xx) |
JP (1) | JPS56152586A (xx) |
AR (1) | AR224190A1 (xx) |
AT (1) | ATE5861T1 (xx) |
AU (1) | AU539722B2 (xx) |
BR (1) | BR8101947A (xx) |
CA (1) | CA1147582A (xx) |
DE (1) | DE3161923D1 (xx) |
ES (1) | ES267154Y (xx) |
HK (1) | HK26787A (xx) |
MX (1) | MX153247A (xx) |
YU (1) | YU85681A (xx) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3166322B2 (ja) * | 1992-06-15 | 2001-05-14 | ソニー株式会社 | 再生方法、再生装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2430794A (en) * | 1947-11-11 | Safety shears | ||
GB1234375A (xx) * | 1968-08-15 | 1971-06-03 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1427397A (en) * | 1973-04-24 | 1976-03-10 | Ici Ltd | Forceps |
-
1981
- 1981-03-12 AU AU68293/81A patent/AU539722B2/en not_active Ceased
- 1981-03-18 CA CA000373293A patent/CA1147582A/en not_active Expired
- 1981-03-24 EP EP81301248A patent/EP0037673B1/en not_active Expired
- 1981-03-24 ES ES1981267154U patent/ES267154Y/es not_active Expired
- 1981-03-24 AT AT81301248T patent/ATE5861T1/de not_active IP Right Cessation
- 1981-03-24 DE DE8181301248T patent/DE3161923D1/de not_active Expired
- 1981-03-25 AR AR284736A patent/AR224190A1/es active
- 1981-03-31 BR BR8101947A patent/BR8101947A/pt not_active IP Right Cessation
- 1981-04-01 MX MX186658A patent/MX153247A/es unknown
- 1981-04-01 JP JP4733181A patent/JPS56152586A/ja active Granted
- 1981-04-01 YU YU00856/81A patent/YU85681A/xx unknown
-
1987
- 1987-04-02 HK HK267/87A patent/HK26787A/xx not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2430794A (en) * | 1947-11-11 | Safety shears | ||
GB1234375A (xx) * | 1968-08-15 | 1971-06-03 |
Also Published As
Publication number | Publication date |
---|---|
EP0037673A1 (en) | 1981-10-14 |
BR8101947A (pt) | 1981-10-06 |
JPS64191B2 (xx) | 1989-01-05 |
ATE5861T1 (de) | 1984-02-15 |
YU85681A (en) | 1983-06-30 |
CA1147582A (en) | 1983-06-07 |
MX153247A (es) | 1986-09-02 |
ES267154Y (es) | 1984-05-01 |
DE3161923D1 (en) | 1984-02-23 |
HK26787A (en) | 1987-04-10 |
JPS56152586A (en) | 1981-11-26 |
AU6829381A (en) | 1981-10-08 |
AR224190A1 (es) | 1981-10-30 |
AU539722B2 (en) | 1984-10-11 |
ES267154U (es) | 1983-11-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4989438A (en) | Power actuated device for installing metal corner strip | |
US5097599A (en) | Emergency escape tool | |
US5636443A (en) | Snips | |
CA1093751A (en) | Electric fastener driving tool | |
US4973028A (en) | Rescue tool jaw | |
EP0024491A1 (en) | Pivot joint and window stay including such a pivot joint | |
CA2419363A1 (en) | Tool with nosepiece for bending fastener upon installation and fastener therefor | |
US3624867A (en) | Plastic locking nut in strip form | |
US5522289A (en) | Opening spring for pivoting hand tool | |
WO2003002879A3 (de) | Selbstbohrende blindnietmutter | |
US6481691B1 (en) | Fastener puller | |
US4805495A (en) | Bolt head reforming tool | |
EP0037673B1 (en) | Unitary tool mechanism | |
US4707924A (en) | Locking hole punch | |
US5249490A (en) | Adjustable hexagonal wrench | |
EP0487537A1 (de) | Messerblockkupplung für doppelkopfrasierer. | |
US5014432A (en) | Center-cutters | |
US4537099A (en) | Tensioning and braking pliers | |
EP0671120A1 (en) | Shock absorber for scissor action tool | |
EP0355220A1 (en) | Striking tool head and handle and methods of manufacturing them | |
US4627141A (en) | Automobile hinge pin remover | |
US4293119A (en) | Tool for removing staples | |
AU2007254875A1 (en) | Belt fastening system | |
US5058862A (en) | Nail removing tool | |
EP0284896A2 (en) | Cutting pliers for welding torch |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LI NL SE |
|
17P | Request for examination filed |
Effective date: 19811117 |
|
ITF | It: translation for a ep patent filed |
Owner name: BARZANO' E ZANARDO MILANO S.P.A. |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LI NL SE |
|
REF | Corresponds to: |
Ref document number: 5861 Country of ref document: AT Date of ref document: 19840215 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 3161923 Country of ref document: DE Date of ref document: 19840223 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19901130 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19920207 Year of fee payment: 12 |
|
ITTA | It: last paid annual fee | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E |
|
EAL | Se: european patent in force in sweden |
Ref document number: 81301248.1 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19960226 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19970120 Year of fee payment: 17 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Effective date: 19970324 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19970402 Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19980302 Year of fee payment: 18 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980331 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 19980415 Year of fee payment: 18 |
|
BERE | Be: lapsed |
Owner name: AMP INC. (UNE SOC. DE PENNSYLVANIE) Effective date: 19980331 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19981001 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 19981001 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19990203 Year of fee payment: 19 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990325 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19990330 Year of fee payment: 19 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990331 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990331 |
|
EUG | Se: european patent has lapsed |
Ref document number: 81301248.1 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
EUG | Se: european patent has lapsed |
Ref document number: 81301248.1 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000324 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20000324 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010103 |