US5438162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for isolating electronic boards from shock and thermal environments
Assignee: Honeywell International Inc
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Filing: 1993-09-02
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Granted: 1995-08-01
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Expires: 2013-09-02
Abstract
Abstract An apparatus for isolating electronic devices from mechanical shock and thermal environments utilizes a metal outer protective shell surrounding the electronic device to be protected. Interposed between the protective shell and the electronic device are a thermal insulating layer, a layer of phase change material and a layer of mechanical shock absorbent material.
Inventors
- 👤 Craig Thompson
- 👤 Lawrence L. Eakin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:09
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/14; H05K7/1417; H05K5/00; H05K5/02; H05K5/0209; H05K5/021; H05K5/0213; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/4913; Y10T29/49146
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
77 words
Apparatus for isolating an electronic device from mechanical shock and thermal environments, comprising: a layer of a rubber-like material surrounding said electronic device; a mass of preformed wax-like material having a high heat of fusion for absorbing a substantial quantity of heat before rising above a critical temperature limit in direct contact with and surrounding said rubber-like material; a heat insulating layer surrounding said mass of wax-like material; and a metal shell surrounding said heat insulating layer.
Claim 2
Dependent Claim
77 words
Apparatus for isolating an electronic device from mechanical shock and thermal environments, comprising: a layer of a rubber-like material surrounding said electronic device; a mass of preformed wax-like material having a high heat of fusion for absorbing a substantial quantity of heat before rising above a critical temperature limit in direct contact with and surrounding said rubber-like material; a heat insulating layer surrounding said mass of wax-like material; and a metal shell surrounding said heat insulating layer.
Claim 3
Dependent Claim
37 words
The apparatus of claim 1, wherein: said rubber-like material is a fluid that surrounds said electronic device and cures to form a resilient layer of shock resistant material for protecting said electronic device against mechanical shock forces.
Claim 4
Dependent Claim
24 words
The apparatus of claim 2, wherein: said fluid is a silicone rubber-like material that cures in time to form a layer of rubber-like consistency.
Claim 5
Dependent Claim
27 words
The apparatus of claim 3, wherein: said silicone rubber-like material has a non-adhesive property after curing so as to be readily peeled away from said electronic device.
Claim 6
Dependent Claim
27 words
The apparatus of claim 3, wherein: said silicone rubber material is of a type that cures in approximately twenty-four hours after being applied to said electronic device.
Claim 7
Dependent Claim
18 words
The apparatus of claim 1, wherein: said wax-like material is a pre-formed mass having a cavity formed therein.
Claim 8
Dependent Claim
14 words
The apparatus of claim 6, wherein: said rubber-like material is contained in said cavity.
Claim 9
Dependent Claim
60 words
Apparatus for isolating a heat and mechanical shock sensitive device from heat and mechanical shock, comprising: a resilient shock-absorbent structure supporting said device; a heat sink formed by a preformed mass of material having high heat of fusion directly contacting and surrounding said device and shock-absorbent structure; and a heat insulating and physical penetration resistant shell surrounding said heat sink.
Claim 10
Dependent Claim
60 words
Apparatus for isolating a heat and mechanical shock sensitive device from heat and mechanical shock, comprising: a resilient shock-absorbent structure supporting said device; a heat sink formed by a preformed mass of material having high heat of fusion directly contacting and surrounding said device and shock-absorbent structure; and a heat insulating and physical penetration resistant shell surrounding said heat sink.
References Cited (Backward Citations)
US5296417A
Cited
US5123538A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-07-31 | 1999-01-30 | 1999-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-31 | 2003-01-30 | 2003-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-31 | 2007-01-30 | 2007-08-01 | $7700.00 | Window Closed / Lapsed |