US5883458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terminal for a piezoelectric device
Assignee: Murata Manufacturing Co Ltd
•
Filing: 1997-10-14
•
Granted: 1999-03-16
•
Expires: 2017-10-14
Abstract
Abstract A terminal for a piezoelectric device has a first contact portion and a second contact portion which are preferably formed as separate metallic elements. Each contact portion has a protrusion disposed thereon. A lubricant is located between the first contact portion and the second contact portion. The lubricant contains a hydrophilic group tending to form a hydrogen bond with a metal element and a lipophilic group extending in a straight chain from any such hydrogen bond and having a length at least several times that of the hydrophilic group. The lipophilic group has a molecular structure which urges away from the metallic surfaces of the contact portions.
Inventors
- 👤 Manabu Sumita
- 👤 Sigemasa Kusabiraki
- 👤 Isao Ikeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:51
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/46; H03H9/54; H03H9/58; H03H9/60; H03H9/605; H03H9/02; H03H9/05; H03H9/10; H03H9/1007; H03H9/1014; H03H9/1028
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
90 words
A terminal for a piezoelectric device comprising: a contact portion including a first portion and a second portion being separate from each other, the second portion provided over the first portion such that a major surface of the second portion is disposed opposite to a major surface of the first portion; and a lubricant disposed between the first portion and the second portion so as to prevent contact between the first portion and the second portion of the contact portion, the lubricant containing a hydrophilic group and a lipophilic group.
Claim 2
Dependent Claim
90 words
A terminal for a piezoelectric device comprising: a contact portion including a first portion and a second portion being separate from each other, the second portion provided over the first portion such that a major surface of the second portion is disposed opposite to a major surface of the first portion; and a lubricant disposed between the first portion and the second portion so as to prevent contact between the first portion and the second portion of the contact portion, the lubricant containing a hydrophilic group and a lipophilic group.
Claim 3
Dependent Claim
23 words
A terminal as set forth in claim 1, wherein the hydrophilic group is adapted to form a chemical bond with the contact portion.
Claim 4
Dependent Claim
32 words
A terminal as set forth in claim 1, wherein the contact portion comprises a metal element and the hydrophilic group is adapted to form a hydrogen bond with the metal contact portion.
Claim 5
Dependent Claim
21 words
A terminal as set forth in claim 1, wherein the lipophilic group extends in a straight chain from the hydrophilic group.
Claim 6
Dependent Claim
24 words
A terminal as set forth in claim 1, wherein the lipophilic group has a length at least several times that of the hydrophilic group.
Claim 7
Dependent Claim
34 words
A terminal as set forth in claim 1, wherein the lipophilic group has a molecular structure which urges the lipophilic group away from the major surfaces of the first portion and the second portion.
Claim 8
Dependent Claim
25 words
A terminal as set forth in claim 1, wherein the lubricant comprises a non-ionic surface active agent excluding an agent having a cyclic molecular structure.
Claim 9
Dependent Claim
25 words
A terminal as set forth in claim 1, wherein the lubricant comprises a higher fatty acid ester excluding an agent having a cyclic molecular structure.
Claim 10
Dependent Claim
23 words
A terminal as set forth in claim 1, wherein each of the first portion and the second portion includes a protrusion disposed thereon.
Claim 11
Dependent Claim
146 words
A terminal for a piezoelectric device comprising: a first portion; a second portion being separate from the first portion and provided over the first portion such that a major surface of the second portion is disposed opposite to a major surface of the first portion while being separated therefrom; and a lubricant located between the first portion and the second portion so as to prevent contact between the first portion and the second portion of the contact portion, the lubricant being arranged and having a structure so as to absorb a shock force occurring in a direction substantially perpendicular to the major surface of the second portion and so as to allow free vibration of the second portion relative to the first portion in a direction substantially parallel to the major surface of the second portion, the lubricant containing a hydrophilic group and a lipophilic group.
Claim 12
Dependent Claim
146 words
A terminal for a piezoelectric device comprising: a first portion; a second portion being separate from the first portion and provided over the first portion such that a major surface of the second portion is disposed opposite to a major surface of the first portion while being separated therefrom; and a lubricant located between the first portion and the second portion so as to prevent contact between the first portion and the second portion of the contact portion, the lubricant being arranged and having a structure so as to absorb a shock force occurring in a direction substantially perpendicular to the major surface of the second portion and so as to allow free vibration of the second portion relative to the first portion in a direction substantially parallel to the major surface of the second portion, the lubricant containing a hydrophilic group and a lipophilic group.
Claim 13
Dependent Claim
74 words
A terminal as set forth in claim 10, wherein the hydrophilic group is adapted to form a hydrogen bond with a metal element and the lipophilic group extends in a straight chain from the hydrogen bond and has a length at least several times that of the hydrophilic group, the lipophilic group having a molecular structure which urges the lipophilic group away from the major surfaces of the first portion and the second portion.
Claim 14
Dependent Claim
25 words
A terminal as set forth in claim 10, wherein the lubricant comprises a non-ionic surface active agent excluding an agent having a cyclic molecular structure.
Claim 15
Dependent Claim
25 words
A terminal as set forth in claim 10, wherein the lubricant comprises a higher fatty acid ester excluding an agent having a cyclic molecular structure.
Claim 16
Dependent Claim
120 words
An electronic component comprising: a case; a plurality of piezoelectric resonators provided in the case; and at least one terminal located between one of the piezoelectric resonators and the case or between two of the piezoelectric resonators, the at least one terminal including: a first portion; a second portion being separate from the first portion and provided over the first portion such that a major surface of the second portion is disposed opposite to a major surface of the first portion; and a lubricant located between the first portion and the second portion so as to prevent contact between the first portion and the second portion of the contact portion, the lubricant containing a hydrophilic group and a lipophilic group.
Claim 17
Dependent Claim
120 words
An electronic component comprising: a case; a plurality of piezoelectric resonators provided in the case; and at least one terminal located between one of the piezoelectric resonators and the case or between two of the piezoelectric resonators, the at least one terminal including: a first portion; a second portion being separate from the first portion and provided over the first portion such that a major surface of the second portion is disposed opposite to a major surface of the first portion; and a lubricant located between the first portion and the second portion so as to prevent contact between the first portion and the second portion of the contact portion, the lubricant containing a hydrophilic group and a lipophilic group.
Claim 18
Dependent Claim
68 words
An electronic component as set forth in claim 14, wherein the lubricant is arranged and has a structure so as to absorb a shock force occurring in a direction substantially perpendicular to the major surface of the second portion and so as to allow free vibration of the second portion relative to the first portion in a direction substantially parallel to the major surface of the second portion.
Claim 19
Dependent Claim
42 words
An electronic component as set forth in claim 14, wherein the second portion and the first portion each comprise a metal element and the hydrophilic group is adapted to form a hydrogen bond with the metal second portion and metal first portion.
Claim 20
Dependent Claim
35 words
An electronic component as set forth in claim 14, wherein the lipophilic group extends in a straight chain from the hydrophilic group and has a length at least several times that of the hydrophilic group.
Claim 21
Dependent Claim
34 words
A terminal as set forth in claim 14, wherein the lipophilic group has a molecular structure which urges the lipophilic group away from the major surfaces of the first portion and the second portion.
Claim 22
Dependent Claim
25 words
A terminal as set forth in claim 14, wherein the lubricant comprises a non-ionic surface active agent excluding an agent having a cyclic molecular structure.
Claim 23
Dependent Claim
25 words
A terminal as set forth in claim 14, wherein the lubricant comprises a higher fatty acid ester excluding an agent having a cyclic molecular structure.
References Cited (Backward Citations)
US5616981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-03-15 | 2002-09-14 | 2003-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-03-15 | 2006-09-14 | 2007-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-03-15 | 2010-09-14 | 2011-03-16 | $7700.00 | Window Closed / Lapsed |