Patent US4074597A successfully refreshed from Google Patents.
US4074597A
Expired / Lapsed
US
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Pliers
Assignee: SNA Europe Industries AB
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Filing: 1976-11-30
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Granted: 1978-02-21
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Expires: 1996-11-30
Abstract
Abstract Pliers in which a spring which moves the pliers handles apart is carried in a recess in one handle, and has a free end sliding in a guiding track in the other handle and which free end moves away from the point of the handles when the same are moved together.
Inventors
- 👤 Conny Erik Jansson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:49
CPC Classifications
B; B25; B25G; B25G1/00; B25G1/10; B25G1/12; B25B; B25B7/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
189 words
Pliers with two limbs (1,2) pivotally united in a joint (3) and with a spring (7) which is arranged between them to move the handles (8,9) of the limbs apart, and has an end part (10) attached in a recess (15) in the handle (8) of one limb (1), and a free end part (11) which, when the handles (8,9) are moved towards each other against the spring bias, engages glidingly in an open trough-shaped guiding track (12) facing the first limb (1), on the handle (9) of the other limb (2), and is so orientated that its place of engagement against the guiding track (12), during the movement of the handles (8,9) towards each other, is moved in a direction away from the joint (3) of the pliers, characterized in that the recess (15) and the guiding track (12) are situated in handle sleeves (13,14) arranged on respective limbs (1,2), the handle sleeve (14) provided with the guiding track (12) having a projection (18) facing towards the opposing handle sleeve (13), the guiding track (12) extending along the face of the projection turned towards the handle sleeve (13).
Claim 2
Dependent Claim
189 words
Pliers with two limbs (1,2) pivotally united in a joint (3) and with a spring (7) which is arranged between them to move the handles (8,9) of the limbs apart, and has an end part (10) attached in a recess (15) in the handle (8) of one limb (1), and a free end part (11) which, when the handles (8,9) are moved towards each other against the spring bias, engages glidingly in an open trough-shaped guiding track (12) facing the first limb (1), on the handle (9) of the other limb (2), and is so orientated that its place of engagement against the guiding track (12), during the movement of the handles (8,9) towards each other, is moved in a direction away from the joint (3) of the pliers, characterized in that the recess (15) and the guiding track (12) are situated in handle sleeves (13,14) arranged on respective limbs (1,2), the handle sleeve (14) provided with the guiding track (12) having a projection (18) facing towards the opposing handle sleeve (13), the guiding track (12) extending along the face of the projection turned towards the handle sleeve (13).
Claim 3
Dependent Claim
55 words
Pliers as claimed in claim 1, characterized in that the handle sleeves (13,14) of both limbs (1,2) are identically alike, each consequently having the guiding track (12) as well as the recess (15), which are thereby arranged side by side on the projection (18) so that springs optionally may be fixed in each handle sleeve.
Claim 4
Dependent Claim
78 words
Pliers as claimed in claim 2, characterized in that the guiding track (12) on the respective handle sleeve (13,14) is substantially linear, and so situated along the said face of the projection (18), that when the handles (8,9) are moved together to an end position for the jaw movement of the pliers, the track substantially coincides with a line of symmetry, passing through the centre of the joint in the pliers, with relation to the handle sleeves (13,14).
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) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |