Patent US3600802A successfully refreshed from Google Patents.
US3600802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated bus bar and method of making
Assignee: Schneider Electric USA Inc
•
Filing: 1969-06-26
•
Granted: 1971-08-24
•
Expires: 1989-06-26
Abstract
Abstract Methods of making insulated bus bars using flat, non-selfconforming insulating film as insulation. One or more strips of insulating film are fed through various work stations in which the strips are formed into a generally U-shaped cross section, heated on the inside of the U-shaped cross section, formed into a sleeve corresponding to the shape of a bus bar and having overlapping longitudinal edge portions, heated on the outside, cooled, and cut to length. A bus bar is then inserted transversely in the formed sleeve.
Inventors
- 👤 George N Jorgensen
- 👤 Harris I Stanback
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:53
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/06; H01B13/10; H01B13/106; B; B29; B29C; B29C63/00; B29C63/02; B29C63/04; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1036; Y10T156/1038; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49204; Y10T29/49224
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
178 words
The method of making an insulated bus bar comprising providing a flat elongated bus bar of uniform cross section, providing an elongated strip of flat, non-self-conforming insulating film of a width somewhat greater than the perimeter of the bus bar cross section, feeding the strip successively through various work stations in which the strip is formed into a generally U-shaped cross section, heated by the directing of heat into the inside of the U-shaped cross section, formed into a sleeve of a cross-sectional shape and size corresponding to the cross-sectional shape and size of the bus bar with the bight portion of the U-shaped cross section becoming one of the wider sides of the sleeve and with the longitudinal edge portions of the strip overlapping along the other of the wider sides of the sleeve, heated by the directing of heat onto the outside of the sleeve, cooled while in the form of the sleeve, and then cut to a length corresponding generally to the length of the bus bar, and inserting the bus bar in the sleeve.
Claim 2
Independent Claim
178 words
The method of making an insulated bus bar comprising providing a flat elongated bus bar of uniform cross section, providing an elongated strip of flat, non-self-conforming insulating film of a width somewhat greater than the perimeter of the bus bar cross section, feeding the strip successively through various work stations in which the strip is formed into a generally U-shaped cross section, heated by the directing of heat into the inside of the U-shaped cross section, formed into a sleeve of a cross-sectional shape and size corresponding to the cross-sectional shape and size of the bus bar with the bight portion of the U-shaped cross section becoming one of the wider sides of the sleeve and with the longitudinal edge portions of the strip overlapping along the other of the wider sides of the sleeve, heated by the directing of heat onto the outside of the sleeve, cooled while in the form of the sleeve, and then cut to a length corresponding generally to the length of the bus bar, and inserting the bus bar in the sleeve.
Claim 3
Dependent Claim
45 words
The method of making an insulated bus bar according to claim 1 wherein two strips of non-self-conforming insulating film are fed successively through the various work stations in superimposed relationship to provide a double-layered sleeve, and the bus bar is inserted into the double-layered sleeve.
Claim 4
Dependent Claim
83 words
The method of making an insulated bus bar according to claim 2 including providing two relatively narrow strips of insulating tape and feeding the strips of insulating tape through the various work stations between the strips of insulating film longitudinally thereof, the strips of insulating tape being spaced apart transversely of each other an spaced from the longitudinal edges of the strips of insulating film so as to be positioned along the narrower sides of the sleeve, respectively, upon formation of the sleeve.
Claim 5
Dependent Claim
45 words
The method of making an insulated bus bar according to claim 1 wherein the step of inserting the bus bar is accomplished by the unfolding of the sleeve at the overlapped longitudinal edge portions of the strip and the inserting of the bus bar transversely.
Claim 6
Dependent Claim
37 words
The method of making an insulate bus bar according to claim 1 including the additional step of punching longitudinally spaced apertures in the sleeve along a longitudinal edge portion thereof before the bus bar is inserted therein.
Claim 7
Dependent Claim
50 words
The method of making an insulated bus bar according to claim 4 including the additional step of winding a length of adhesive tape transverselY around the bus bar and sleeve at one end of the sleeve to retain the bus bar and sleeve against longitudinal movement relative to each other.
References Cited (Backward Citations)
US607415A
Cited
US2108023A
Cited
US2653991A
Cited
US2749180A
Cited
US2960725A
Cited
US3042889A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |