US4099315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for fixing the center of rotation between the legs of two-legged devices
Assignee: B Braun Instruments
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Filing: 1977-02-28
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Granted: 1978-07-11
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Expires: 1997-02-28
Abstract
Abstract The pivotal connection between the legs of a two-legged device, such as a surgical forceps, having a first leg including a mounting passage formed therein and a second leg which is inserted in the mounting passage is formed by expanding the mounting passage of said first leg by heating at least the portion of that leg having the passage therein to a predetermined temperature; inserting a pivot member in a pivot opening in the second leg; inserting said second leg through the mounting passage of the first leg until the pivot member is within the confines of the mounting passage and then compressing the portion of the first leg having the mounting passage therein towards the other leg to engage the pivot member against the internal sides of the passage.
Inventors
- 👤 Alfred Pudenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:40
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/28; A61B17/2812; A61B17/2816; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/4984
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
152 words
The method of forming a pivotal connection between the legs of a two-legged device in which one of the legs has a mounting passage formed therein and the other of the legs is inserted in said passage and has a pivot opening formed therein; said method comprising the steps of expanding said mounting passage by heating at least the portion of the leg having said passage therein to a temperature of about 900° to 1000° C; inserting a pivot member having opposed spherical surfaces in the pivot opening of the other of said legs; inserting said other of said legs through said mounting passage until said pivot member is within the confines of said passage; and compressing the portion of said leg having the mounting passage therein adjacent said mounting passage towards said other leg to engage said opposed spherical surfaces of said pivot member against the inner sides of said passage.
Claim 2
Independent Claim
152 words
The method of forming a pivotal connection between the legs of a two-legged device in which one of the legs has a mounting passage formed therein and the other of the legs is inserted in said passage and has a pivot opening formed therein; said method comprising the steps of expanding said mounting passage by heating at least the portion of the leg having said passage therein to a temperature of about 900° to 1000° C; inserting a pivot member having opposed spherical surfaces in the pivot opening of the other of said legs; inserting said other of said legs through said mounting passage until said pivot member is within the confines of said passage; and compressing the portion of said leg having the mounting passage therein adjacent said mounting passage towards said other leg to engage said opposed spherical surfaces of said pivot member against the inner sides of said passage.
Claim 3
Dependent Claim
24 words
The method as defined in claim 1 wherein said compressing step is performed while the leg having said passage therein is subjected to heat.
Claim 4
Dependent Claim
41 words
The method as defined in claim 2 wherein said step of inserting a pivot member comprises the step of inserting a spherical ball in said opening, having a diameter greater than the width of the leg in which it is inserted.
Claim 5
Dependent Claim
44 words
The method as defined in claim 2 wherein said step of inserting a pivot member comprises the step of inserting a rod in said opening having semi-spherical end portions and a length greater than the width of the leg in which it is inserted.
Claim 6
Independent Claim
171 words
The method of forming a pivotal connection between the legs of a two-legged device in which one of the legs has a mounting passage formed therein and the other of the legs is inserted in said passage and has a pivot opening formed therein; said method comprising the steps of expanding said mounting passage by heating at least the portion of the leg having said passage therein to a temperature of about 900° C to 1000° C; inserting a pivot member having conically shaped end portions and a length greater than the width of the leg in which it is inserted in the pivot opening of the other of said leg; inserting said other of said leg through said mounting passage until said pivot member is within the confines of said passage; and compressing the portion of said leg having the mounting passage therein adjacent said mounting passage towards said other leg to engage said opposed conically shaped end portions of the pivot member against the inner sides of the passage.
Claim 7
Independent Claim
171 words
The method of forming a pivotal connection between the legs of a two-legged device in which one of the legs has a mounting passage formed therein and the other of the legs is inserted in said passage and has a pivot opening formed therein; said method comprising the steps of expanding said mounting passage by heating at least the portion of the leg having said passage therein to a temperature of about 900° C to 1000° C; inserting a pivot member having conically shaped end portions and a length greater than the width of the leg in which it is inserted in the pivot opening of the other of said leg; inserting said other of said leg through said mounting passage until said pivot member is within the confines of said passage; and compressing the portion of said leg having the mounting passage therein adjacent said mounting passage towards said other leg to engage said opposed conically shaped end portions of the pivot member against the inner sides of the passage.
Claim 8
Dependent Claim
24 words
The method as defined in claim 5 wherein said compressing step is performed while the leg having said passage therein is subjected to heat.
References Cited (Backward Citations)
US2305156A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-10 | 1982-01-09 | 1982-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-10 | 1986-01-09 | 1986-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-10 | 1990-01-09 | 1990-07-11 | $7700.00 | Window Closed / Lapsed |