US4577735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shock absorber for quartz crystal enclosures using multiple contact points to distribute stress
Assignee: Kidd Creek Mines Ltd
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Filing: 1984-07-02
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Granted: 1986-03-25
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Expires: 2004-07-02
Abstract
Abstract A shock absorbing mechanism for protecting a fragile quartz crystal includes a Teflon coating on the internal surface of the crystal enclosure. The enclosure is provided with a plurality of detents arranged so that when the crystal is shocked in its most fragile plane a plurality of these Teflon coated detents are struck simultaneously to distribute the shock across the surface of the crystal.
Inventors
- 👤 Charles W. Mooney
- 👤 Robert E. Phipps
- 👤 William J. Kuznicki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:40
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/05; H03H9/0504; H03H9/0528; H03H9/09; H03H9/10; H03H9/1007; H03H9/1014
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
119 words
A shock absorbing mechanism for protection of a planar crystal device against impact with a crystal enclosure wall, said crystal device having opposed major surfaces, said shock absorbing mechanism comprising: shock absorbing means having a plurality of deformable protuberances for contacting one as said major surfaces when said crystal device is subjected to mechanical shock; and carrier means for holding said shock absorbing means between one of said major surfaces and said enclosure wall so that said plurality of deformable protuberances contact one of said opposed major surfaces substantially simultaneously when said crystal device is shocked by a force exceeding a predetermined magnitude in a direction toward said shock absorbing means and substantially perpendicular to said opposed major surfaces.
Claim 2
Dependent Claim
119 words
A shock absorbing mechanism for protection of a planar crystal device against impact with a crystal enclosure wall, said crystal device having opposed major surfaces, said shock absorbing mechanism comprising: shock absorbing means having a plurality of deformable protuberances for contacting one as said major surfaces when said crystal device is subjected to mechanical shock; and carrier means for holding said shock absorbing means between one of said major surfaces and said enclosure wall so that said plurality of deformable protuberances contact one of said opposed major surfaces substantially simultaneously when said crystal device is shocked by a force exceeding a predetermined magnitude in a direction toward said shock absorbing means and substantially perpendicular to said opposed major surfaces.
Claim 3
Dependent Claim
46 words
The shock absorbing mechanism of claim 1 wherein said plurality of deformable protuberances are arranged so that at least one of each of the contact points contacts one of four quadrants of one of said major surfaces when said crystal device is shocked by said force.
Claim 4
Dependent Claim
27 words
The shock absorbing mechanism of claim 1, wherein one of said deformable protuberances contacts the center of gravity of said crystal device when shocked by said force.
Claim 5
Dependent Claim
16 words
The shock absorbing mechanism of claim 1, wherein said shock absorbing means includes a dimple spring.
Claim 6
Dependent Claim
16 words
The shock absorbing mechanism of claim 1 wherein said shock absorbing means includes a rib spring.
Claim 7
Dependent Claim
17 words
The shock absorbing mechanism of claim 4 wherein said dimple spring is a compression type dimple spring.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-24 | 1989-09-23 | 1990-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-24 | 1993-09-23 | 1994-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-24 | 1997-09-23 | 1998-03-25 | $7700.00 | Window Closed / Lapsed |