Patent US4071864A successfully refreshed from Google Patents.
US4071864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible recording head mounting assembly
Assignee: United States Department of the Air Force
•
Filing: 1976-01-16
•
Granted: 1978-01-31
•
Expires: 1996-01-16
Abstract
Abstract A flexible recording head mounting assembly where the head is secured to a cap which is supported by a pressure sensitive diaphram, the head being pivotally secured to the cap and having an off center shoe located near the pick-up end so that the head is inclined to a recording medium and a hydrodynamic force minimizes the space between the head and moving recording medium.
Inventors
- 👤 Raymond J. Zapala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:06
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/58; G11B5/60; G11B5/6005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A flexible recording head mounting assembly for information recording systems having one moving member positioned in a close spaced relationship comprising: a housing; a cylindrically shaped chamber open at one end and reduced to a passage at the other end, in the housing; a flexible diaphram positioned across the open end of the chamber; a cup shaped means within the chamber extending through the diaphram and secured thereto; a recording head pivotally mounted to said cup-shaped means and a shoe means affixed to the recording head and adjacent an end distally from the pivot mount and having a cylindrical surface whose center line is offset from the recording head whereby the head will be inclined to the moving member and spaced therefrom by a hydrodynamic bearing created by said inclination.
Claim 2
Dependent Claim
130 words
A flexible recording head mounting assembly for information recording systems having one moving member positioned in a close spaced relationship comprising: a housing; a cylindrically shaped chamber open at one end and reduced to a passage at the other end, in the housing; a flexible diaphram positioned across the open end of the chamber; a cup shaped means within the chamber extending through the diaphram and secured thereto; a recording head pivotally mounted to said cup-shaped means and a shoe means affixed to the recording head and adjacent an end distally from the pivot mount and having a cylindrical surface whose center line is offset from the recording head whereby the head will be inclined to the moving member and spaced therefrom by a hydrodynamic bearing created by said inclination.
References Cited (Backward Citations)
US2783311A
Cited
US2937240A
Cited
US3151319A
Cited
US3249701A
Cited
US3488648A
Cited
US3763331A
Cited
US3705397A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-30 | 1981-08-01 | 1982-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-30 | 1985-08-01 | 1986-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-30 | 1989-08-01 | 1990-01-31 | $7700.00 | Window Closed / Lapsed |