US3792853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toggle clamp with detent open guided arm
Assignee: Individual
•
Filing: 1973-01-26
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Granted: 1974-02-19
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Expires: 1993-01-26
Abstract
Abstract A toggle clamp comprises a pivot base mountable upon a support with a pair of side plates adjustably mounted upon said pivot base in a pre-selected angular position and guidably receiving therebetween a pivot arm pivotally mounted upon said plates and terminating in a work piece engaging clamp arm. A U-shaped handle link with a laterally extending handle is pivotally mounted over and upon the guide plates and pivotally mounts interiorly a pair of arm links at their one ends, with the other ends of said arm links pivotally connected to the handle link. A yieldable latch is positioned between the arm links and pivotally connected thereto and adapted to interlock with a latch plate spanning said guide plates when the handle has been moved to a release position. A latch release rod with handle is connected to said latch for disengaging from the latch plate permitting return movement of the handle to work piece securing position.
Inventors
- 👤 L Blatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:04
CPC Classifications
B; B25; B25B; B25B5/00; B25B5/06; B25B5/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
237 words
A toggle clamp comprising a pivot base mountable upon a support; a pair of upright parallel spaced guide plates secured upon said pivot base in a pre-selected angular position; a pivot arm guidably positioned between said plates and at one end pivotally mounted upon said plate and terminating in a clamp arm adapted to retainingly engage a work piece on said support; a U-shaped handle link overlying said guide plates and at its free ends, pivotally mounted upon said side plates; said handle links terminating in a first handle; a pair of spaced arm links at their one ends pivotally mounted upon said handle link coplaner with said guide plates, and at their lower ends engaging opposite sides of and pivotally connected to said pivot arm; a latch between said arm links at their upper ends and pivotally mounted upon said handle link; said latch having a transverse detent notch; a latch plate transversely spanning and connected to the outer side edges of said guide plates; said latch notch on retracting movement of said handle yieldably receiving said latch plate anchoring the handle in a retracted release position; and a latch release rod secured to said latch and terminating in a second handle extending along and parallel to said first handle, adapted for manual rotation of the latch to disengage it from said latch plate and for movement of said first handle towards work piece securing position.
Claim 2
Dependent Claim
237 words
A toggle clamp comprising a pivot base mountable upon a support; a pair of upright parallel spaced guide plates secured upon said pivot base in a pre-selected angular position; a pivot arm guidably positioned between said plates and at one end pivotally mounted upon said plate and terminating in a clamp arm adapted to retainingly engage a work piece on said support; a U-shaped handle link overlying said guide plates and at its free ends, pivotally mounted upon said side plates; said handle links terminating in a first handle; a pair of spaced arm links at their one ends pivotally mounted upon said handle link coplaner with said guide plates, and at their lower ends engaging opposite sides of and pivotally connected to said pivot arm; a latch between said arm links at their upper ends and pivotally mounted upon said handle link; said latch having a transverse detent notch; a latch plate transversely spanning and connected to the outer side edges of said guide plates; said latch notch on retracting movement of said handle yieldably receiving said latch plate anchoring the handle in a retracted release position; and a latch release rod secured to said latch and terminating in a second handle extending along and parallel to said first handle, adapted for manual rotation of the latch to disengage it from said latch plate and for movement of said first handle towards work piece securing position.
Claim 3
Dependent Claim
16 words
In the toggle clamp of claim 1, resilient means biasing said latch against said handle link.
Claim 4
Dependent Claim
99 words
In the toggle clamp of claim 1, said guide plates being pivotally adjusted initially at a first pivot point upon said base; the mounting of said pivot arm being at a second pivot point upon said plates; the mounting of said handle link upon said side plates being at said first pivot point; the mounting of said arm links at their one ends being at a third pivot point upon said handle link, and the connection at their other ends to said pivot arm being at a fourth pivot point; the latch mounting being at said third pivot point.
Claim 5
Dependent Claim
50 words
In the toggle clamp of claim 3, said guide plate outer side edges being arcuate at a fixed radius to said first pivot point; said latch plate being selectively positioned along said outer side edges and secured thereto depending upon the desired arc of release retraction of said first handle.
Claim 6
Dependent Claim
37 words
In the toggle clamp of claim 3, said third pivot point passing dead center with respect to said first and fourth pivot points when said first handle has moved the clamp arm to work piece securing position.
Claim 7
Dependent Claim
28 words
In the toggle clamp of claim 1, said latch plate having an undercut front angle face; said latch notch including a rear angle face for cooperative interlock therewith.
Claim 8
Dependent Claim
48 words
In the toggle clamp of claim 1, said first handle being inclined laterally at an acute angle with respect to the plane of movement of said handle link in the range of 0* to 60* upon opposite sides thereof; said second handle being similarly inclined and parallel thereto.
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) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |