US3082399A - Contact jaw for a blade contact - Google Patents
Contact jaw for a blade contact Download PDFInfo
- Publication number
- US3082399A US3082399A US17657A US1765760A US3082399A US 3082399 A US3082399 A US 3082399A US 17657 A US17657 A US 17657A US 1765760 A US1765760 A US 1765760A US 3082399 A US3082399 A US 3082399A
- Authority
- US
- United States
- Prior art keywords
- contact
- pressure
- springs
- blade
- plates
- 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
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
- H01H1/42—Knife-and-clip contacts
Definitions
- the invention relates to a contact jaw for a blade con tact, comprising two springs-loaded, nearly parallel contact plates which extend into two extensions with a gradually increasing distance and which merge 1nto a basepart that is nearly perpendicular to the contact plates.
- Such a contact jaw is known from the German patent specification No. 953,717.
- the spring pressure is provided by thin C-shaped springs. This has, however, the disadvantage that these springs, apart from being quite costly, cannot provide a great pressure, so that the necessary contact pressure must be provided bythe elasticity of the material of the contact jaws and their extensions, which therefore must be unnecessarily heavy.
- the invention aims to do away with these disadvantages and to this end the spring pressure is supplied by one or more twisted plate springs, the torsion of which furnishes the spring pressure. These springs are positioned in the space between the extensions and the base plate. Further there are provided two or more pressure members, coupled to the respective contact plates and positioned nearly perpendicular to these plates, while each one of these members is provided with a slot through which the plates springs run.
- each pressure member being provided with a slot, perpendicular through which the springs run, while the extensions of the contact plates are provided with longitudinal slots, namely in the one plate near the edges and in the other plate near the centre, each of these slots guiding a pressure member which rests with the one, not slotted cross-leg against the plate while the other leg extends into the space between the extensions and the base plate, the plate springs running through the aligned slots while the ends of the springs are twisted with regard to the centre through a certain angle that depends upon the desired spring pressure.
- both the short edges of the springs are provided with a small extension that is parallel to these edges.
- FIGURE 1 shows the use of the novel contact jaw in a fuse-base while the FIGURES 2 and 3 show the mutual position of the pressure members.
- the contact jaw comprises two parallel contact plates 1 with extensions 2 which merge into the base plate 3. These three parts are, together with the terminal strips 4, made in one piece.
- the extensions 2 are provided with longitudinal slots 5 and 6, the slots 5 lying near the edges ofone extension while the slot 6 lies approximately at the centre of the opposite extension.
- These slots guide the pressure me m bers 7, each one of which, as is also shown in FIGURES 2 and 3, comprises a slot 8.
- Two plate springs 9 are thrust through the slots 8 in the pressure members 7.
- the contact plates may be pressed together before the springs are brought into place while it is also possible to make use of a hole, made in one of the contact plates, as is the case with the left contact jaw in FIGURE 1.
- FIGURE 2 shows a perspective view of the pressure members 7 with the springs. It is clear that, when the distance between the heads 7 of the pressure members increases the ends of the springs 7 will be twisted with respect to the centre of the spring.
- FIGURE 3 shows a side view of the pressure members; this figure needs no further explanation.
- the slot 8 has a particular shape; it consists namely of two parallel parts, which are shifted with respect to each other. This particular shape makes it easy to bring the springs 9 into place. By forming the short outer edges of the springs 9 with a small extension the spring is prevented from moving out of the slot.
- a contact jaw for a blade contact comprising two spring-loaded substantially parallel contact plates which extend into two extensions with a gradually increasing distance and which merge into a base plate substantially perpendicular to the contact plates, at least one twisted blade spring positioned in the space between the extensions and the base plate, and two or more pressure members coupled to the respective contact plates and positio ned substantially perpendicular to said plates, each of said pressure members being provided with a slot accommodating the blade spring so as to bias the pressure members toward the contact plates.
- a device having three flat C-shaped pressure members having a back portion and two terminal cross-leg portions, one cross-leg of each pressure member being one of these slots guiding a pressure member which rests with one cross-leg against the contact plate while the other cross-leg extends into the space between the extensions and the base plate, the spring running through the aligned slots in the pressure members, while the ends of the spring are twisted with respect to the centre through a certain angle that depends upon the desired spring pressure.
Landscapes
- Contacts (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL3082399X | 1959-03-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3082399A true US3082399A (en) | 1963-03-19 |
Family
ID=19876987
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17657A Expired - Lifetime US3082399A (en) | 1959-03-26 | 1960-03-25 | Contact jaw for a blade contact |
Country Status (2)
Country | Link |
---|---|
US (1) | US3082399A (xx) |
NL (2) | NL98321C (xx) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3378665A (en) * | 1966-01-07 | 1968-04-16 | Lucas Industries Ltd | Fuse holders |
US3423723A (en) * | 1967-02-13 | 1969-01-21 | Murray Mfg Corp | Jaw construction for bladejaw contacts |
US3598949A (en) * | 1969-05-09 | 1971-08-10 | Chi Tsan Hung | Switch break jaw and spring means |
US5118314A (en) * | 1991-05-07 | 1992-06-02 | Gould, Inc. | Fuse holder |
US6159057A (en) * | 1998-11-02 | 2000-12-12 | Litton Systems, Inc. | High current connector using tuning fork contacts |
US20050142956A1 (en) * | 2003-12-30 | 2005-06-30 | Wen Liang | Fuse holder |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8204297A (nl) | 1982-11-05 | 1984-06-01 | Hazemeijer Bv | Tegenkontakt, in het bijzonder voor een meskontakt van een mespatroon en werkwijze voor het vervaardigen hiervan. |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US753381A (en) * | 1904-03-01 | Benno vom eigen | ||
US1838406A (en) * | 1930-02-14 | 1931-12-29 | Oscar H Jung | Fuse clamp |
US2402491A (en) * | 1944-06-10 | 1946-06-18 | Connecticut Electric Mfg Compa | Fuse clip |
FR1140583A (fr) * | 1955-05-13 | 1957-07-29 | Gardy Particip App | Perfectionnements aux mâchoires des appareils de connexion électrique à couteau |
US2821942A (en) * | 1951-09-25 | 1958-02-04 | Unitcast Corp | Round bottom end doors for drop end gondola cars |
-
0
- NL NL237552D patent/NL237552A/xx unknown
- NL NL98321D patent/NL98321C/xx active
-
1960
- 1960-03-25 US US17657A patent/US3082399A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US753381A (en) * | 1904-03-01 | Benno vom eigen | ||
US1838406A (en) * | 1930-02-14 | 1931-12-29 | Oscar H Jung | Fuse clamp |
US2402491A (en) * | 1944-06-10 | 1946-06-18 | Connecticut Electric Mfg Compa | Fuse clip |
US2821942A (en) * | 1951-09-25 | 1958-02-04 | Unitcast Corp | Round bottom end doors for drop end gondola cars |
FR1140583A (fr) * | 1955-05-13 | 1957-07-29 | Gardy Particip App | Perfectionnements aux mâchoires des appareils de connexion électrique à couteau |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3378665A (en) * | 1966-01-07 | 1968-04-16 | Lucas Industries Ltd | Fuse holders |
US3423723A (en) * | 1967-02-13 | 1969-01-21 | Murray Mfg Corp | Jaw construction for bladejaw contacts |
US3598949A (en) * | 1969-05-09 | 1971-08-10 | Chi Tsan Hung | Switch break jaw and spring means |
US5118314A (en) * | 1991-05-07 | 1992-06-02 | Gould, Inc. | Fuse holder |
US6159057A (en) * | 1998-11-02 | 2000-12-12 | Litton Systems, Inc. | High current connector using tuning fork contacts |
US20050142956A1 (en) * | 2003-12-30 | 2005-06-30 | Wen Liang | Fuse holder |
US6932658B2 (en) * | 2003-12-30 | 2005-08-23 | Wen Liang | Fuse holder |
Also Published As
Publication number | Publication date |
---|---|
NL237552A (xx) | |
NL98321C (xx) |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3091746A (en) | Electrical connector | |
GB1512187A (en) | Boltless device for spacing at least two parallel spaced-apart conductors | |
US3082399A (en) | Contact jaw for a blade contact | |
GB940914A (en) | Assembly for interconnecting electrical conductors | |
US3017602A (en) | Tape cable connector | |
GB907370A (en) | Improvements in or relating to die sets for crimping electrical connector ferrules onto electrical conductors | |
US3723940A (en) | Electrical contact assembly | |
ES8103525A1 (es) | Perfeccionamientos en los aparatos de radio portatiles,emi- sor-receptores | |
US3678237A (en) | Self-aligning jaw contact | |
GB918316A (en) | A new or improved cable connector | |
US3148012A (en) | Electrical connector | |
US2036366A (en) | Connecter plug | |
GB908939A (en) | Improvements in or relating to electrical connectors | |
US2955276A (en) | Wiring device with simplified wire terminals | |
US2774053A (en) | Flexible terminal strip | |
US3020514A (en) | Wire connector clamp | |
DE1085053B (de) | Hohlspiegel fuer Leuchten, insbesondere Rueckfahrleuchten von Kraftfahrzeugen | |
GB1029640A (en) | Soldering lug, particularly of plug-in contact springs for printed circuits | |
US2462879A (en) | Iron plug | |
US3705374A (en) | Mounting means for electrical switch blade and for fuse blade terminal | |
GB840860A (en) | Improvements in or relating to flexible electric contact elements and assemblies incorporating the same | |
AT212730B (de) | Hohlspiegel für Leuchten, insbesondere Rückfahrleuchten | |
GB1078322A (en) | Fuse holders | |
GB556452A (en) | Improvements in or relating to electric contacts | |
GB976519A (en) | Contacts for electrical switches |