US4554848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal pliers
Assignee: Individual
•
Filing: 1984-08-27
•
Granted: 1985-11-26
•
Expires: 2004-08-27
Abstract
Abstract A pair of pliers is equipped with an expander unit that spreads the handles so that the jaws will forcibly grip objects from the inside. External teeth on the jaws aid in gripping.
Inventors
- 👤 Joseph L. Galletto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:42
CPC Classifications
B; B25; B25B; B25B7/00; B25B7/12; B25B7/02; B25B7/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
113 words
Internal pliers comprising: A. a pair of pliers having jaws suitable for internal gripping; B. a pin-yoke attached to the inside of one handle of said pliers, the second handle having a notch in it toward the inside; C. a pin passing through the pin-yoke; and D. a removable expander means which comprises: a threaded adjuster having at one end a fork that is engaged by and removable from the pin that passes through the pin-yoke, and an internally-threaded thumbscrew having a rounded pin at its end that engages the notch in the pliers' handle, said thumbscrew screwing in and out on the threaded adjuster to adjust the spread of the pliers' handles.
Claim 2
Dependent Claim
113 words
Internal pliers comprising: A. a pair of pliers having jaws suitable for internal gripping; B. a pin-yoke attached to the inside of one handle of said pliers, the second handle having a notch in it toward the inside; C. a pin passing through the pin-yoke; and D. a removable expander means which comprises: a threaded adjuster having at one end a fork that is engaged by and removable from the pin that passes through the pin-yoke, and an internally-threaded thumbscrew having a rounded pin at its end that engages the notch in the pliers' handle, said thumbscrew screwing in and out on the threaded adjuster to adjust the spread of the pliers' handles.
Claim 3
Dependent Claim
18 words
The internal pliers of claim 1, further comprising a spring for tensioning the handles against the expander means.
Claim 4
Dependent Claim
143 words
Internal pliers comprising: A. a pair of pliers having jaws suitable for internal gripping; B. a pin-yoke attached to the inside of one handle of said pliers, the second handle having a notch in it on the inside; C. a pin passing through said pin-yoke; D. a pin-yoke engaging unit attached to the pin yoke, said engaging unit comprising: a disk end having a hole in it that is engaged by the pin-yoke pin, and a male hex end extending toward the other handle; and E. an expander means comprising: an Allen screw having a head that engages the male hex end of the pin-yoke engaging unit, and an internally-threaded thumbscrew having a rounded pin as its end that engages the notch in the pliers' handle, said thumbscrew in and out on the Allen screw to adjust the spread of the pliers' handles.
Claim 5
Dependent Claim
143 words
Internal pliers comprising: A. a pair of pliers having jaws suitable for internal gripping; B. a pin-yoke attached to the inside of one handle of said pliers, the second handle having a notch in it on the inside; C. a pin passing through said pin-yoke; D. a pin-yoke engaging unit attached to the pin yoke, said engaging unit comprising: a disk end having a hole in it that is engaged by the pin-yoke pin, and a male hex end extending toward the other handle; and E. an expander means comprising: an Allen screw having a head that engages the male hex end of the pin-yoke engaging unit, and an internally-threaded thumbscrew having a rounded pin as its end that engages the notch in the pliers' handle, said thumbscrew in and out on the Allen screw to adjust the spread of the pliers' handles.
Claim 6
Dependent Claim
33 words
The internal pliers of claim 3, further comprising an extension bar that has a male hex end that engages the Allen screw and a female hex end that engages the pin-yoke engaging unit.
Claim 7
Dependent Claim
18 words
The internal pliers of claim 3, further comprising a spring for tensionioning the handles against the expander means.
References Cited (Backward Citations)
US1317399A
Cited
GB189322578A
Cited
US1388744A
Cited
US1534066A
Cited
US1676775A
Cited
FR757522A
Cited
US2740196A
Cited
US2842996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-25 | 1989-05-27 | 1989-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-25 | 1993-05-27 | 1993-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-25 | 1997-05-27 | 1997-11-26 | $7700.00 | Window Closed / Lapsed |