US5155462A — Sub-miniature electrical component, particularly …

Claim 1

Independent Claim 91 words

A fuse comprising a dielectric tube having an axis of symmetry, the tube having ends and an outer axial surface between the ends, at least one electrical conductor metallized on the outer surface of the tube, the conductor extending from end-to-end of the axial surface of the tube and across each end of the tube, the conductor comprising fusible link means responding to overcurrent conditions to break electrical continuity between the ends of the tube, the tube having a diameter less than 0.1" and a length substantially less than its diameter.

Claim 2

Dependent Claim 91 words

A fuse comprising a dielectric tube having an axis of symmetry, the tube having ends and an outer axial surface between the ends, at least one electrical conductor metallized on the outer surface of the tube, the conductor extending from end-to-end of the axial surface of the tube and across each end of the tube, the conductor comprising fusible link means responding to overcurrent conditions to break electrical continuity between the ends of the tube, the tube having a diameter less than 0.1" and a length substantially less than its diameter.

Claim 3

Dependent Claim 27 words

The fuse of claim 1 further including an elongate lead attached to one axial end of the tube at right angles to the axis of the tube.

Claim 4

Dependent Claim 32 words

The fuse of claim 2 including a glass sleeve surrounding the tube, the glass sleeve having a diameter less than 0.1", the lead being attached to one axial end of the sleeve.

Claim 5

Dependent Claim 25 words

The fuse of claim 3 including a plastic package encasing the fuse and the portion of the lead attached to the end of the tube.

Claim 6

Dependent Claim 26 words

The fuse of claim 4 including a second lead attached to the other end of the tube at right angles to the axis of the tube.

Claim 7

Dependent Claim 12 words

The fuse of claim 2 wherein the lead is a flat strip.

Claim 8

Dependent Claim 48 words

The fuse of claim 2 including a component, an axial end of the tube opposite said one axial end being attached to the component, and a plastic package encasing the component, the fuse, and the portion of the lead attached to the one axial end of the tube.

Claim 9

Dependent Claim 37 words

The fuse of claim 1 wherein the fuse is mounted to a broad face of a printed circuit board with the axis of the tube at right angles to the broad face of the printed circuit board.

Claim 10

Dependent Claim 21 words

The fuse of claim 1 including a glass sleeve surrounding the tube, the glass sleeve having a diameter less than 0.1".

Claim 11

Dependent Claim 61 words

A sub-miniature electrical component comprising a dielectric tubing having an axis of symmetry, the tube having ends and an outer axial surface between the ends, at least one electrical conductor metallized on the outer surface of the tube, and a dielectric surrounding the tube, the component having a diameter less than 0.1" and having a length substantially less than its diameter.

Claim 12

Dependent Claim 61 words

A sub-miniature electrical component comprising a dielectric tubing having an axis of symmetry, the tube having ends and an outer axial surface between the ends, at least one electrical conductor metallized on the outer surface of the tube, and a dielectric surrounding the tube, the component having a diameter less than 0.1" and having a length substantially less than its diameter.

Claim 13

Dependent Claim 12 words

The component of claim 10 wherein the dielectric comprises a glass sleeve.

Claim 14

Dependent Claim 25 words

The component of claim 10 wherein the component includes contacts metallized to axial ends of the tube, the contacts being electrically connected to the conductor.

Claim 15

Dependent Claim 25 words

The component of claim 10 wherein a lead is attached to an axial end of the tube at right angles to the axis of symmetry.

Claim 16

Dependent Claim 60 words

In combination, an electrolytic capacitor and an overcurrent protective fuse, the electrolytic capacitor having a dielectric housing, the housing having an interior and an exterior, and leads extending from the interior to the exterior of the housing, the fuse comprising a dielectric substrate and a fuse link metallized onto the substrate, the fuse being mounted in or on the housing.

Claim 17

Dependent Claim 60 words

In combination, an electrolytic capacitor and an overcurrent protective fuse, the electrolytic capacitor having a dielectric housing, the housing having an interior and an exterior, and leads extending from the interior to the exterior of the housing, the fuse comprising a dielectric substrate and a fuse link metallized onto the substrate, the fuse being mounted in or on the housing.

Claim 18

Dependent Claim 12 words

The combination of claim 14 wherein the capacitor is a tantalum capacitor.

Claim 19

Dependent Claim 30 words

The combination of claim 14 wherein the fuse is mounted in the capacitor housing, the fuse including a dielectric solid over the link to isolate the link from the housing.

Claim 20

Dependent Claim 15 words

The combination of claim 14 wherein the fuse link is vacuum sputtered onto the substrate.

Claim 21

Dependent Claim 38 words

The combination of claim 14 wherein the fuse substrate is a tube, the link being formed in a conductor extending axially of the tube, and metallization on the ends of the tube, one metallized end contacting the capacitor.

Claim 22

Dependent Claim 77 words

In combination, an electrical component having a plurality of leads, and a fuse interposed in at least one of the leads, the fuse comprising a dielectric tube, the tube having ends and an outer axial surface between the ends, and at least one electrical conductor on the outer surface of the tube, the conductor extending from end-to-end of the tube, the conductor comprising fusible link means responding to overcurrent conditions to break electrical continuity of said lead.

Claim 23

Dependent Claim 77 words

In combination, an electrical component having a plurality of leads, and a fuse interposed in at least one of the leads, the fuse comprising a dielectric tube, the tube having ends and an outer axial surface between the ends, and at least one electrical conductor on the outer surface of the tube, the conductor extending from end-to-end of the tube, the conductor comprising fusible link means responding to overcurrent conditions to break electrical continuity of said lead.

Claim 24

Dependent Claim 22 words

The combination of claim 19 wherein the fuse has a diameter less than 0.1" and a length substantially less than its diameter.

Claim 25

Dependent Claim 14 words

The combination of claim 19 wherein the fuse includes a dielectric surrounding the tube.

Claim 26

Dependent Claim 26 words

The combination of claim 19 wherein the fuse has an axis of symmetry and the lead is attached at right angles to the axis of symmetry.

Claim 27

Dependent Claim 18 words

The combination of claim 22 wherein one axial end of the fuse is attached directly to the component.

Claim 28

Dependent Claim 42 words

The combination of claim 19 wherein the component and leads are adapted for surface-mounting, the leads comprising flat strips having coplanar portions below the component, the fuse being interposed below the component and above the coplanar portion of one of the leads.

Claim 29

Dependent Claim 16 words

The combination of claim 19 including a molded housing encapsulating both the component and the fuse.

Claim 30

Dependent Claim 35 words

A sub-miniature fuse body having a volume of less than 0.004" in. 3 , the fuse body comprising a glass substrate and a conductor metallized on the substrate, the conductor comprising a fusible link part.

Claim 31

Dependent Claim 35 words

A sub-miniature fuse body having a volume of less than 0.004" in. 3 , the fuse body comprising a glass substrate and a conductor metallized on the substrate, the conductor comprising a fusible link part.

Claim 32

Dependent Claim 14 words

The fuse body of claim 26 wherein the conductor is covered with a dielectric.

Claim 33

Dependent Claim 28 words

The fuse body of claim 26 wherein the conductor extends from a first end to a second end of the substrate, the ends of the substrate being metallized.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1995-10-13	1996-04-13	1996-10-13	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1999-10-13	2000-04-13	2000-10-13	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2003-10-13	2004-04-13	2004-10-13	$7700.00	Window Closed / Lapsed

Sub-miniature electrical component, particularly a fuse

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