Patent US1227531A successfully refreshed from Google Patents.
Patent US4361778A successfully refreshed from Google Patents.
US4361778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal piezoelectric crystal holder
Assignee: Motorola Solutions Inc
•
Filing: 1980-11-28
•
Granted: 1982-11-30
•
Expires: 2000-11-28
Abstract
Abstract A universal crystal holder is provided which is capable of supporting piezoelectric crystals having virtually any size and shape. The crystal holder includes two support structures, each having a downwardly sloping surface for accepting a side of the crystal to be supported. Since crystals placed in the universal crystal holder of the invention are self-aligned, the placement of a crystal in the holder is easily automated.
Inventors
- 👤 Martin Luff
- 👤 William G. Skoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:16
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/05; H03H9/0504; H03H9/0509; H03H9/0514; H10; H10N; H10N30/00; H10N30/80; H10N30/88
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
128 words
A crystal holder for supporting a piezoelectric crystal having upper and lower surfaces including: a first element of electrically conductive material having a downwardly sloping first surface for contacting and supporting the lower surface of said crystal at an end thereof; a second element of electrically conductive material having a downwardly sloping second surface for contacting and supporting the lower surface of said crystal at another end thereof, said second surface facing said first surface in a V-like manner; and each of said first and second elements being electrically insulated from the other and including a mounting portion facing the other of said first and second elements, said mounting portion being sufficiently massive to prevent said first and second elements from tipping over when mounted on a substrate.
Claim 2
Dependent Claim
128 words
A crystal holder for supporting a piezoelectric crystal having upper and lower surfaces including: a first element of electrically conductive material having a downwardly sloping first surface for contacting and supporting the lower surface of said crystal at an end thereof; a second element of electrically conductive material having a downwardly sloping second surface for contacting and supporting the lower surface of said crystal at another end thereof, said second surface facing said first surface in a V-like manner; and each of said first and second elements being electrically insulated from the other and including a mounting portion facing the other of said first and second elements, said mounting portion being sufficiently massive to prevent said first and second elements from tipping over when mounted on a substrate.
Claim 3
Dependent Claim
17 words
The crystal holder of claim 1 wherein said first and second elements each exhibit a wing-like geometry.
Claim 4
Dependent Claim
18 words
The crystal holder of claim 1 or 2 wherein said electrically conductive material comprises a nickel silver alloy.
Claim 5
Dependent Claim
17 words
The crystal holder of claim 1 or 2 wherein said first and second surfaces are substantially flat.
Claim 6
Dependent Claim
16 words
The crystal holder of claim 4 wherein said electrically conductive material comprises a nickel silver alloy.
References Cited (Backward Citations)
US2409607A
Cited
US2409838A
Cited
US3980911A
Cited
JPS5248489A
Cited
US4079284A
Cited
US4267479A
Cited
SU646422A1
Cited
US4287447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-29 | 1986-05-31 | 1986-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-29 | 1990-05-31 | 1990-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-29 | 1994-05-31 | 1994-11-30 | $7700.00 | Window Closed / Lapsed |