US3886654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing laminated bus bars
Assignee: Eldre Corp
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Filing: 1974-01-22
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Granted: 1975-06-03
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Expires: 1994-01-22
Abstract
Abstract These bus bars are made from thin, copper plate stampings having flat, transverse conductor strips connected at their ends to integral, longitudinally extending looms or webs, which hold the strips in spaced relation. The stampings are stacked on a fixture in alternating relation with similarly shaped layers of insulation, which have marginal edges that overlap around the edges of the stampings, and are held in registry by pins which extend from the fixture into engagement with the webs and/or holding tabs that project from the edges of the strips. The assembly is subjected to a first pressing operation which bonds the stacked layers together except in the zones occupied by the webs and holding tabs. The assembly is then removed from the fixture, and the webs and tabs are removed by bending them manually until they fracture. The assembly is then subjected to a second and final pressing operation which seals the insulation around the areas formerly occupied by the side webs and tabs; and the completed bars are separated by cutting away excess insulation at opposite sides of the assembly.
Inventors
- 👤 Harvey B Erdle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:34
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/0009; H01B7/0018; H02; H02G; H02G5/00; H02G5/005; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T428/00; Y10T428/12; Y10T428/12188; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12882
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
208 words
A method of producing laminated bus bars from flat, electrically conductive blanks of the type having at least a pair of spaced side sections connected by a plurality of transverse strip sections, comprising stacking a plurality of said electrically conductive blanks and a plurality of flat, dielectric insulator blanks in alternating relation, with the spaced side sections and the transverse strip sections on each electrically conductive blank registering vertically with similarly shaped side and strip sections, respectively, on the remaining blanks in the stAck, and with the insulator blanks having overlapping marginal edges projecting slightly beyond the edges of the electrically conductive blanks. laminating part of the stacked blanks to bond together registering portions thereof other than in the areas of said side sections, removing said side sections of the electrically conductive blanks from the strip sections thereof after the first-named laminating operation, laminating the remainder of the stacked blanks to bond together overlapping portions of the insulator blanks in the areas previously occupied by the side sections of the electrically conductive blanks, and severing the laminated portions of the insulator blanks in the areas previously occupied by said side sections of said electrically conductive blanks to separate the spaced stacks of laminated strip sections from each other.
Claim 2
Independent Claim
208 words
A method of producing laminated bus bars from flat, electrically conductive blanks of the type having at least a pair of spaced side sections connected by a plurality of transverse strip sections, comprising stacking a plurality of said electrically conductive blanks and a plurality of flat, dielectric insulator blanks in alternating relation, with the spaced side sections and the transverse strip sections on each electrically conductive blank registering vertically with similarly shaped side and strip sections, respectively, on the remaining blanks in the stAck, and with the insulator blanks having overlapping marginal edges projecting slightly beyond the edges of the electrically conductive blanks. laminating part of the stacked blanks to bond together registering portions thereof other than in the areas of said side sections, removing said side sections of the electrically conductive blanks from the strip sections thereof after the first-named laminating operation, laminating the remainder of the stacked blanks to bond together overlapping portions of the insulator blanks in the areas previously occupied by the side sections of the electrically conductive blanks, and severing the laminated portions of the insulator blanks in the areas previously occupied by said side sections of said electrically conductive blanks to separate the spaced stacks of laminated strip sections from each other.
Claim 3
Independent Claim
208 words
A method of producing laminated bus bars from flat, electrically conductive blanks of the type having at least a pair of spaced side sections connected by a plurality of transverse strip sections, comprising stacking a plurality of said electrically conductive blanks and a plurality of flat, dielectric insulator blanks in alternating relation, with the spaced side sections and the transverse strip sections on each electrically conductive blank registering vertically with similarly shaped side and strip sections, respectively, on the remaining blanks in the stAck, and with the insulator blanks having overlapping marginal edges projecting slightly beyond the edges of the electrically conductive blanks. laminating part of the stacked blanks to bond together registering portions thereof other than in the areas of said side sections, removing said side sections of the electrically conductive blanks from the strip sections thereof after the first-named laminating operation, laminating the remainder of the stacked blanks to bond together overlapping portions of the insulator blanks in the areas previously occupied by the side sections of the electrically conductive blanks, and severing the laminated portions of the insulator blanks in the areas previously occupied by said side sections of said electrically conductive blanks to separate the spaced stacks of laminated strip sections from each other.
Claim 4
Independent Claim
208 words
A method of producing laminated bus bars from flat, electrically conductive blanks of the type having at least a pair of spaced side sections connected by a plurality of transverse strip sections, comprising stacking a plurality of said electrically conductive blanks and a plurality of flat, dielectric insulator blanks in alternating relation, with the spaced side sections and the transverse strip sections on each electrically conductive blank registering vertically with similarly shaped side and strip sections, respectively, on the remaining blanks in the stAck, and with the insulator blanks having overlapping marginal edges projecting slightly beyond the edges of the electrically conductive blanks. laminating part of the stacked blanks to bond together registering portions thereof other than in the areas of said side sections, removing said side sections of the electrically conductive blanks from the strip sections thereof after the first-named laminating operation, laminating the remainder of the stacked blanks to bond together overlapping portions of the insulator blanks in the areas previously occupied by the side sections of the electrically conductive blanks, and severing the laminated portions of the insulator blanks in the areas previously occupied by said side sections of said electrically conductive blanks to separate the spaced stacks of laminated strip sections from each other.
Claim 5
Dependent Claim
53 words
A method as defined in claim 1, including removing said side sections from the electrically conductive blanks by repeatedly bending the last-named sections about crimp lines which are formed in and which cut part way through one surface of each electrically conductive blank adjacent opposite ends, respectively, of each of its strip sections.
Claim 6
Dependent Claim
111 words
A method as defined in claim 2, including stacking said blanks on a fixture having thereon locating pins which project through registering openings in said side sections of said blanks to hold the blanks in registry on said fixture, forming said electrically conductive blanks with a plurality of holding tabs which project from the edges of said strip sections of the last-named blanks, and which are held against movement on said fixture by a further plurality of locating pins during said first-named laminating operation, and removing said tabs from said electrically conductive blanks prior to the second-named laminating operation by fracturing said tabs at their junctures with their associated strip sections.
Claim 7
Dependent Claim
124 words
A method as defined in claim 1, including forming each electrically conductive blank with its strip sections extending parallel to each other between the two side sections of the blank, and with each strip section having narrow connecting portions of reduced width at opposite ends thereof integral with the side sections of the blank and cut part way through along crimp lines spaced inwardly from said side sections, removing both said side sections and said connecting portions of each electrically conductive blank after said first-named laminating operation by repeatedly bending said side sections and connecting portions about said crimp lines until fracture occurs along the last-named lines, and during said severing operation cutting substantially medially through the areas previously occupied by said connecting portions.
Claim 8
Independent Claim
146 words
A method for producing laminated bus bars, comprising forming a plurality of flat, electrically-conductive blanks having spaced holding tabs projecting from the edges thereof, assemblying a plurality of the blanks on a fixture in alternating, registering relation with similarly shaped layers of dielectric insulation having overlapping marginal edges which project beyond the edges of said blanks, releasably holding the assembly on the fixture with a plurality of locating elements, at least certain of which engage said spaced holding tabs to hold the blanks and layers of insulation in registry on the fixture, laminating part of the assembly to bond together areas thereof other than the areas occupied by said tabs, severing the holding tabs from the blanks along lines spaced inwardly from the edges of said insulation, and laminating the remaining part of the assembly to bond together the areas thereof previously occupied by said tabs.
Claim 9
Independent Claim
146 words
A method for producing laminated bus bars, comprising forming a plurality of flat, electrically-conductive blanks having spaced holding tabs projecting from the edges thereof, assemblying a plurality of the blanks on a fixture in alternating, registering relation with similarly shaped layers of dielectric insulation having overlapping marginal edges which project beyond the edges of said blanks, releasably holding the assembly on the fixture with a plurality of locating elements, at least certain of which engage said spaced holding tabs to hold the blanks and layers of insulation in registry on the fixture, laminating part of the assembly to bond together areas thereof other than the areas occupied by said tabs, severing the holding tabs from the blanks along lines spaced inwardly from the edges of said insulation, and laminating the remaining part of the assembly to bond together the areas thereof previously occupied by said tabs.
Claim 10
Dependent Claim
41 words
A method as defined in claim 5, including cutting part way through said tabs along said lines during the formation of said blanks, and bending the tabs about said lines during said severing operation until the tabs fracture from the blankS.
Claim 11
Dependent Claim
40 words
A method as defined in claim 6, including assemblying said blanks on pins which extend from the fixture through registering openings in at least certain of said tabs, and removing the assembly from the fixture after the first-named laminating operation.
Claim 12
Dependent Claim
119 words
A method as defined in claim 5, including forming each blank with at least one side section and with a plurality of spaced, transverse strip sections projecting from one edge of said side section, the side and strip sections of each blank being disposed to be stacked in vertical registry with correspondingly shaped side and strip sections, respectively, in the other blanks in the assembly, and forming at least one of said tabs on each strip section of a blank to project from one edge of the strip section, and with the inner end of each tab being cut partway through along a crimp line which disposed adjacent the edge of the strip section from which the tab projects.
Claim 13
Dependent Claim
143 words
A method as defined in claim 8, including forming each blank with two, spaced side sections, and with its strip sections extending transversely between said side sections and being cut part way through adjacent opposite ends thereof along crimp lines disposed to register vertically with corresponding crimp lines in the other blanks in the assembly, leaving the assembly unbonded in the areas of said side sections and said tabs during the first-named laminating operation, removing the side sections and tabs from the blanks during the severing operation by bending them until they fracture along their associated crimp lines, bonding together the areas formerly occupied by said side sections and tabs during the second-named laminating operation, and severing the overlapping, laminated layers of insulation in the areas previously occupied by said side sections to separate the stacks of laminated strip sections from each other.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |