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US4434951A Expired / Lapsed US ⏱️ 0.0 years remaining

Fishing reel having a magnetic brake and non-magnetizable bearing

Assignee: Shimano Inc
•
Filing: 1982-11-22
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Granted: 1984-03-06
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Expires: 2002-11-22
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Abstract

Abstract A fishing reel which rotatably supports a spool shaft having a spool to a reel body through a pair of bearings and incorporates, into a bearing housing supporting one of the pair of bearings, a magnetic force brake which imparts a rotational resistance against free rotation of the spool shaft, has the bearing at the bearing housing incorporating the brake formed as a metallic bearing comprising a non-magnetic material.

Inventors

  • 👤 Hideki Nakajima

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 19:11
CPC Classifications
A; A01; A01K; A01K89/00; A01K89/015; A01K89/0155; A01K89/01555

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 212 words
A fishing reel comprising, a reel body comprising a pair of first and second separated and opposing side frames which are provided with bearing housings each having a bearing, a spool shaft having a spool disposed between said side frames at said reel body, said spool shaft being supported rotatably by said bearings to said reel body, a drive mechanism for driving said spool shaft, a clutch mechanism for enabling said spool shaft to become freely rotatable with respect to said drive mechanism, and a brake mechanism for imparting a rotational resistance against free rotation of said spool shaft, said brake mechanism comprising a magnet ring having a plurality of magnets and an electric conductor which is cylindrical and rotatable together with said spool shaft, said magnet ring being fixed to said bearing housing at said second side frame, said electric conductor being disposed opposite to said magnet ring and rotatably within the magnetic field of said magnets, so that the magnetic force by said magnets exerts a braking action on said spool and spool shaft, said bearing at said second side frame being disposed within the magnetic field of said magnets at said brake mechanism and being formed of a metallic bearing comprising a non-magnetic material not magnetizable by said magnets.
Claim 2
Dependent Claim 212 words
A fishing reel comprising, a reel body comprising a pair of first and second separated and opposing side frames which are provided with bearing housings each having a bearing, a spool shaft having a spool disposed between said side frames at said reel body, said spool shaft being supported rotatably by said bearings to said reel body, a drive mechanism for driving said spool shaft, a clutch mechanism for enabling said spool shaft to become freely rotatable with respect to said drive mechanism, and a brake mechanism for imparting a rotational resistance against free rotation of said spool shaft, said brake mechanism comprising a magnet ring having a plurality of magnets and an electric conductor which is cylindrical and rotatable together with said spool shaft, said magnet ring being fixed to said bearing housing at said second side frame, said electric conductor being disposed opposite to said magnet ring and rotatably within the magnetic field of said magnets, so that the magnetic force by said magnets exerts a braking action on said spool and spool shaft, said bearing at said second side frame being disposed within the magnetic field of said magnets at said brake mechanism and being formed of a metallic bearing comprising a non-magnetic material not magnetizable by said magnets.
Claim 3
Dependent Claim 46 words
A fishing reel according to claim 1, wherein said bearing housing at said second side frame has a support cylinder for said magnet ring, said support cylinder supporting at the outer periphery thereof said magnet ring and holding at the inner periphery thereof said metallic bearing.
Claim 4
Dependent Claim 15 words
A fishing reel according to claim 1, wherein said metallic bearing comprises a sintered alloy.
Claim 5
Dependent Claim 19 words
A fishing reel according to claim 3, wherein said metallic bearing comprises a sintered alloy in a copper series.
Claim 6
Dependent Claim 17 words
A fishing reel according to claim 3, wherein said metallic bearing is permeated with a lubricating oil.
Claim 7
Dependent Claim 17 words
A fishing reel according to claim 4, wherein said metallic bearing is permeated with a lubricating oil.

References Cited (Backward Citations)

US2550861A Cited
GB635116A Cited
US3167672A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-03-06 1987-09-05 1988-03-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-03-06 1991-09-05 1992-03-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-03-06 1995-09-05 1996-03-06 $7700.00 Window Closed / Lapsed

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