US3909008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pick-up cartridge with improved oscillating system
Assignee: Pioneer Corp
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Filing: 1974-07-15
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Granted: 1975-09-30
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Expires: 1994-07-15
Abstract
Abstract The oscillating system of a pick-up cartridge is formed primarily by a tubular cantilever member which is slit longitudinally and in one form receives an inserted magnetic armature at the end of the tubular member which is fixed while the free end carries holes on opposite sides, one of which intersects the longitudinal slit and which hole is smaller in diameter than the diameter of the hole on the opposite side with the transducer needle forcibly projecting through the aligned holes.
Inventors
- 👤 Yasunori Sakai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:34
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/16; H04R1/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
144 words
In a pick-up cartridge oscillation system including a tubular cantilever member having a relatively fixed end and a relatively free end and supporting at its free end, a sound transducing needle, the improvement wherein: said cantilever member comprises a hollow tubular member including a longitudinal slit extending inwardly from said free end at least partially the length of the tubular member and having opposed, aligned holes within said tubular member adjacent the free end, with said longitudinal slit intersecting one of said holes, said transducing needle having a diameter approximately equal to the diameter of said hole opposite that being intersected by said longitudinal slit, said hole having said longitudinal slit intersection being of a diameter less than that of said needle, and wherein, said transducing needle is force fit into said aligned holes and projects from one side of said tubular cantilever member.
Claim 2
Dependent Claim
144 words
In a pick-up cartridge oscillation system including a tubular cantilever member having a relatively fixed end and a relatively free end and supporting at its free end, a sound transducing needle, the improvement wherein: said cantilever member comprises a hollow tubular member including a longitudinal slit extending inwardly from said free end at least partially the length of the tubular member and having opposed, aligned holes within said tubular member adjacent the free end, with said longitudinal slit intersecting one of said holes, said transducing needle having a diameter approximately equal to the diameter of said hole opposite that being intersected by said longitudinal slit, said hole having said longitudinal slit intersection being of a diameter less than that of said needle, and wherein, said transducing needle is force fit into said aligned holes and projects from one side of said tubular cantilever member.
Claim 3
Dependent Claim
46 words
The pick-up cartridge oscillation system as claimed in claim 1, wherein said tubular cantilever member is flattened into oval shape and said holes are aligned with the minor axis thereof, and wherein the tip of said needle is proximate the larger diameter hole receiving the same.
Claim 4
Dependent Claim
60 words
The pick-up cartridge oscillation system as claimed in claim 1, wherein said longitudinal slit extends the length of said tubular cantilever member and said system further includes a rod-like armature of a diameter slightly in excess to the internal diameter of said tubular cantilever member and being telescopingly received within the end of that member opposite that holding said needle.
Claim 5
Dependent Claim
129 words
The pick-up cartridge oscillation system as claimed in claim 1, wherein said longitudinal slit extends the length of said tubular cantilever member, said system further comprising a rod-like armature of a diameter generally slightly less than the outside diameter of said tubular cantilever member and said system further includes a sleeve having an internal diameter equal to that of said armature and being slightly less than that of the outside diameter of said tubular cantilever member, and wherein the end of said tubular cantilever member not carrying said needle is inserted within one end of said sleeve, and said armature is inserted within the other end of said sleeve with the ends of said armature and said tubular cantilever member within said sleeve in abutting contact with each other.
Claim 6
Dependent Claim
159 words
The pick-up cartridge oscillation system as claimed in claim 1, further comprising: a fixed holder including a cylindrical projecting portion, a wire fixed to said holder and projecting through the center of said cylindrical projection portion, and extending axially beyond the end of the same, said longitudinal slit within said hollow tubular cantilever member extending the full length of the same, the end of said hollow tubular cantilever member not carrying said needle receiving the projecting end of said wire, a tubular member having an outer diameter slightly in excess of the internal diameter of said cantilever member telescopingly receiving the projecting end of said wire and in turn being received within the end of said cantilever member remote from said needle under a force fit, an annular armature surrounding the end of said cantilever member remote from said needle and an elastic damping member interposed between said holder and said armature, and being supported by said holder projection.
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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |