IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0827326
(2001-04-05)
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발명자
/ 주소 |
- Annacone, William R.
- Felis, Kenneth P.
- Kubert, Vincent
|
출원인 / 주소 |
|
대리인 / 주소 |
Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A.
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
35 |
초록
▼
A telephone calling card includes a planar card member with a scratch-off label positioned on a surface of the planar card member. The scratch-off label includes a base label having an opaque, releasable film layer and a PIN printed on the opaque, releasable film layer. A scratch-off cover label is
A telephone calling card includes a planar card member with a scratch-off label positioned on a surface of the planar card member. The scratch-off label includes a base label having an opaque, releasable film layer and a PIN printed on the opaque, releasable film layer. A scratch-off cover label is secured on the base label and has a scratch-off layer that covers the PIN to obscure from viewing the PIN. Upon application of a peeling force to remove the scratch-off cover label, the opaque, releasable film layer is removed and hides the printed PIN from viewing via the backside of the opaque, releasable film layer. In one aspect of the present invention, the scratch-off cover label is folded over the base label.
대표청구항
▼
A telephone calling card includes a planar card member with a scratch-off label positioned on a surface of the planar card member. The scratch-off label includes a base label having an opaque, releasable film layer and a PIN printed on the opaque, releasable film layer. A scratch-off cover label is
A telephone calling card includes a planar card member with a scratch-off label positioned on a surface of the planar card member. The scratch-off label includes a base label having an opaque, releasable film layer and a PIN printed on the opaque, releasable film layer. A scratch-off cover label is secured on the base label and has a scratch-off layer that covers the PIN to obscure from viewing the PIN. Upon application of a peeling force to remove the scratch-off cover label, the opaque, releasable film layer is removed and hides the printed PIN from viewing via the backside of the opaque, releasable film layer. In one aspect of the present invention, the scratch-off cover label is folded over the base label. 53 (20000926); JP-0157162 (20010525) ging surface, a first perimeter wall, and a first array of apertures extending between the first exhaust receiving surface and the first exhaust discharging surface, and (ii) a second baffle plate, joined to said first baffle plate in a generally edge-to-edge orientation with an included angle therebetween of greater than 5 degrees, and disposed downstream, with respect to flow of exhaust gases through said exhaust pipe, of said first baffle plate, said second baffle plate having a second exhaust receiving surface, a second exhaust discharging surface, a second perimeter wall, and a second array of apertures extending between the second exhaust receiving surface and the second exhaust discharging surface, said first and second perimeter walls defining a collective projected perimeter of said baffle along a projection of the first and second perimeter walls, thereby to define a second longitudinal axis of said sound-attenuating baffle, said sound attenuating baffle having a length, taken along the second longitudinal axis, of no more than about 36 inches, said exhaust system being effective to reduce sonic interisity of exhaust gases of a suitably sized internal combustion engine, passed therethrough, by at least 3 decibels. 4. An in-line exhaust system as in claim 3 wherein said baffle plates are substantially planar. 5. An in-line exhaust system as in claim 3, said exhaust pipe comprising an imperforate outer wall, a perforate inner wall, and an outer sound attenuation chamber between said outer and inner walls, said baffle plates having sufficient sound-deflection surface area, and being disposed at such angles with respect to gas flow through said baffle, as to deflect substantial portions of a gas, traversing said exhaust pipe, toward the outer chamber, so as to both enhance mixing of gases traversing said exhaust pipe and cause movement of such gases through said inner wall of said exhaust pipe into said outer sound-attenuation chamber. 6. An in-line sound-attenuating exhaust system as in claim 3, said baffle being held in said exhaust pipe by friction engagement between said baffle and said exhaust pipe. 7. A baffle for use in a sound-attenuating exhaust system, said sound-attenuating baffle comprising from two to about six baffle plates having respective exhaust receiving surfaces, respective exhaust discharging surfaces, respective perimeter walls, and respective arrays of apertures extending between the respective exhaust receiving surfaces and the respective exhaust discharging surfaces, said perimeter walls defining a collective projected perimeter of said baffle along a collective projection of the perimeter walls, thereby to define a longitudinal axis of said sound-attenuating baffle, each said baffle plate defining, in edge view, a plate angle with the longitudinal axis, at least one such plate angle being different in magnitude from another such plate angle. 8. A baffle as in claim 7, said baffle further comprising a backwash valve secured over one of said baffle plates and joined to the respective said baffle plate at an edge of said backwash valve. 9. A baffle as in claim 7 wherein the magnitudes of the respective plate angles cooperate with each other in attenuating first and second different sets of sonic frequencies of exhaust gases passing through said baffle. 10. A baffle as in claim 7 wherein at least one of a first array of apertures on a first said plate, a second array of apertures different from the first array, on a second said plate, and a third array of apertures different from the first and second arrays, on a third said plate comprise respective ones of the apertures defining different aperture areas. 11. A baffle as in claim 7 wherein a first aperture configuration on a first said plate, a second aperture configuration on a second said plate, and a third aperture configuration on a third said plate define at least two different aperture configurations, and complement each other in at
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