Patent US3602519A successfully refreshed from Google Patents.
US3602519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phonograph cartridge mounting platform
Assignee: Pickering and Co Inc
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Filing: 1969-08-13
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Granted: 1971-08-31
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Expires: 1989-08-13
Abstract
Abstract A platform is provided adapted to facilitate the mounting of a phonograph cartridge to the head of a phonograph tone arm. The platform includes a base member having a pair of resilient sides extending outwardly beyond one face adapted to receive and securely retain the cartridge thereto and means affixed to the other face of the platform to couple the platform to the phonograph tone arm head.
Inventors
- 👤 John J Bubbers
- 👤 John P Kuehn
- 👤 James E Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:06
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/02; G11B3/10; G11B3/42; G11B3/58; G11B3/5809; G11B3/5818; G11B3/5827; G11B3/5836
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
147 words
A mounting platform adapted to be interposed between the head of a phonograph tone arm and a cartridge to be mounted to said tone arm head, said cartridge being of the type provided with a mounting bracket including a pair of flanges extending transverse to the longitudinal axis of the cartridge casing, said platform comprising: a generally flat base member having a top and bottom face; a pair of sidewalls, having portions spaced apart from each other a distance sufficient to engage said cartridge mounting bracket therebetween, resiliently coupled to said base member extending downwardly beyond said bottom face whereby to enable said sidewall portions to be spread apart for placement of said cartridge mounting flanges therebetween whereafter said sidewalls will relax and assume their normal position retaining said cartridge therebetween and, means coupled to said platform base adapted to secure said platform to said tone arm.
Claim 2
Dependent Claim
147 words
A mounting platform adapted to be interposed between the head of a phonograph tone arm and a cartridge to be mounted to said tone arm head, said cartridge being of the type provided with a mounting bracket including a pair of flanges extending transverse to the longitudinal axis of the cartridge casing, said platform comprising: a generally flat base member having a top and bottom face; a pair of sidewalls, having portions spaced apart from each other a distance sufficient to engage said cartridge mounting bracket therebetween, resiliently coupled to said base member extending downwardly beyond said bottom face whereby to enable said sidewall portions to be spread apart for placement of said cartridge mounting flanges therebetween whereafter said sidewalls will relax and assume their normal position retaining said cartridge therebetween and, means coupled to said platform base adapted to secure said platform to said tone arm.
Claim 3
Dependent Claim
111 words
The invention in accordance with claim 1 wherein each of said sidewalls further include an inwardly extending ledge spaced downwardly from said base member bottom face a distance substantially equal to the thickness of said cartridge-mounting bracket flanges, a first portion of each of said sidewalls disposed above said ledge, said sidewall first portions being spaced apart from each other a distance substantially equal to the overall length of said cartridge-mounting bracket measured from the tips of said bracket flanges, and second portions of each of said sidewalls disposed below said ledge, said second portions being spaced apart from each other a distance less than the overall length of said bracket.
Claim 4
Dependent Claim
42 words
The invention in accordance with claim 3 wherein each of said sidewalls tapers inwardly from the free end thereof to the associated ledge whereby to define a camming surface adapted to cooperate in guiding said cartridge bracket to said sidewall first portion.
Claim 5
Dependent Claim
47 words
The invention in accordance with claim 1 wherein said tone arm head includes surfaces thereon defining screw holes therein and said platform coupling means include a lug extending outwardly beyond said base member top face, said lug being adapted to frictionally engage said tone arm had surfaces.
Claim 6
Dependent Claim
72 words
The invention in accordance with claim 5 wherein the diameter of said lug is slightly greater than the diameter of said screw hole, said lug is formed of a resilient material, and further including a slot extending longitudinally along said lug wherein said lug is adapted to be diametrically compressed to fit into said tone arm screw hole whereafter said lug relaxes and expands to frictionally engage said screw hole defining surfaces.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |