US4410922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable head mount
Assignee: Ampex Corp
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Filing: 1981-01-26
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Granted: 1983-10-18
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Expires: 2001-01-26
Abstract
Abstract A magnetic transducing head is mounted on a transducing machine so that the angle of orientation (e.g., azimuth inclination) of the head with respect to the machine is adjustable as by means of a differential screw mechanism extending between two relatively pivotable portions of the mount. The screw mechanism comprises a manually-operable element having threads of two different pitches on the same axis, threaded respectively into the two mount portions. Thus the two mount portions are always held at an intended distance from each other without lost-motion play, and the sensitivity of orientation adjustment is increased, because the translation corresponding to unit angular movement of the screw is measured by the difference between the inverse-pitch dimensions of the two threads.
Inventors
- 👤 David A. Babow
- 👤 William M. Nedley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:18
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/56; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7041
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
185 words
A mount for supporting a magnetic transducing head on a transducing machine and for adjusting the orientation of said head in at least one predetermined adjustment plane, comprising: a base having first and second portions pivotable with respect to one another in said adjustment plane, and adapted for respective attachment to said machine and to said head; one of said base portions having a male threaded portion of predetermined pitch and the other base portion having a female threaded portion of the same handedness but of different pitch, said two threaded portions constituting a set of threaded portions centered on the same axis and coextensive on the length thereof; and a shank element having a second set of male and female threaded portions also centered on said axis and coextensive on the length thereof, the male threaded portion of each set engaging and mating with the female threaded portion of the other set, so that rotation of said shank about said axis causes said base portions to pivot with respect to one another to a new orientation of said head with respect to said machine.
Claim 2
Dependent Claim
185 words
A mount for supporting a magnetic transducing head on a transducing machine and for adjusting the orientation of said head in at least one predetermined adjustment plane, comprising: a base having first and second portions pivotable with respect to one another in said adjustment plane, and adapted for respective attachment to said machine and to said head; one of said base portions having a male threaded portion of predetermined pitch and the other base portion having a female threaded portion of the same handedness but of different pitch, said two threaded portions constituting a set of threaded portions centered on the same axis and coextensive on the length thereof; and a shank element having a second set of male and female threaded portions also centered on said axis and coextensive on the length thereof, the male threaded portion of each set engaging and mating with the female threaded portion of the other set, so that rotation of said shank about said axis causes said base portions to pivot with respect to one another to a new orientation of said head with respect to said machine.
Claim 3
Dependent Claim
30 words
A mount as described in claim 1, wherein: said first base portion has a cylindrical threaded extension member extending into and threaded into said female threaded portion of said shank.
Claim 4
Dependent Claim
30 words
A mount as described in claim 2, wherein: said extension member is a separate threaded member threaded into said first base portion and retained therein by laterally-threaded first set-screw means.
Claim 5
Dependent Claim
57 words
A mount as described in claim 2, wherein: said second base portion has a cylindrical bore formed therein, and a hollow cylindrical sleeve element fitting snugly slidably within said bore and retained therein by laterally-threaded second set screw means; said shank element being threaded through said hollow cylindrical sleeve element by the male-threaded portion of said shank.
Claim 6
Dependent Claim
37 words
A mount as described in claim 4, wherein: said sleeve is pierced to pass said second set-screw means to engage and to frictionally retain said shank element, while retaining said sleeve in the manner of a pin.
Claim 7
Dependent Claim
25 words
A mount as described in claim 5, wherein: said shank is stripped of male threads in the region thereof engageable by said second set-screw means.
Claim 8
Dependent Claim
33 words
A mount as described in claim 1, wherein: said base portions are connected by an integral flexible nexus for said relative pivoting motion of said first and second portions without lost-motion play therebetween.
Claim 9
Dependent Claim
38 words
A mount as described in claim 7, wherein: said nexus is also resilient; and said threaded portions of said shank and base are made to fit together loosely, with said resilient nexus taking up the lost-motion play therebetween.
References Cited (Backward Citations)
US2681152A
Cited
US3476349A
Cited
US3876318A
Cited
US4268881A
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US4314296A
Cited
US4329723A
Cited
US4329724A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-17 | 1987-04-18 | 1987-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-17 | 1991-04-18 | 1991-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-17 | 1995-04-18 | 1995-10-18 | $7700.00 | Window Closed / Lapsed |