US3665790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tweezers
Assignee: Swiss American Precision Imports Inc
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Filing: 1970-07-20
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Granted: 1972-05-30
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Expires: 1990-07-20
Abstract
Abstract The device is a tweezers or tool particularly constructed and adapted for picking up and handling thin fragile objects such as silicon wafers or the like. The noses or jaws of the tweezer parts or legs are particularly configurated for the purpose intended. The end parts or jaws of the tweezer legs are configurated to limit the inward movement of the wafer or other object between the jaws and also to limit the opening movement of the jaws. The invention embodies several different preferred configurations for accomplishing these purposes.
Inventors
- 👤 Price D Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:50
CPC Classifications
B; B25; B25B; B25B9/00; B25B9/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
151 words
A tweezer tool comprising: members including a pair of resilient legs fixed together at one end, their free ends being movable toward and from each other; a first jaw means at the end of one of said legs; a second jaw means at the end of the other leg, and said jaw means being positioned to move towards each other for engaging a wafer-like object; and means for limiting inward movement of an object between the jaw means and for limiting opening separation of the jaws, said last means comprising one jaw means having a configuration through which the other jaw means extends for limiting inward movement between the jaws, said configuration being such as to limit opening movement of the jaws, said configuration comprising a U-shaped element carried by one jaw, the bight portion of the said element being positioned to engaGe and restrain opening movement of the other jaw.
Claim 2
Dependent Claim
151 words
A tweezer tool comprising: members including a pair of resilient legs fixed together at one end, their free ends being movable toward and from each other; a first jaw means at the end of one of said legs; a second jaw means at the end of the other leg, and said jaw means being positioned to move towards each other for engaging a wafer-like object; and means for limiting inward movement of an object between the jaw means and for limiting opening separation of the jaws, said last means comprising one jaw means having a configuration through which the other jaw means extends for limiting inward movement between the jaws, said configuration being such as to limit opening movement of the jaws, said configuration comprising a U-shaped element carried by one jaw, the bight portion of the said element being positioned to engaGe and restrain opening movement of the other jaw.
Claim 3
Dependent Claim
31 words
A tweezers as in claim 1 wherein the U-shaped element has legs and the other jaw has a portion extending between said legs, the jaw having cutouts to accommodate the legs.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |