US3817510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cam wedge swivel gripper head
Assignee: Individual
•
Filing: 1973-01-10
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Granted: 1974-06-18
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Expires: 1993-01-10
Abstract
Abstract A cam wedge work piece gripper head has a body receiving a power reciprocated plunger and pivotally mounted on the body opposed pairs of normally spaced apart work piece gripping arms. Opposed rollers carried by said plunger nest within angularly related cam slots in the respective pairs of arms so that forward and retracting movements of said plunger effect corresponding closing and opening movements of said pair of arms. A spring resists initial longitudinal forward movement of said plunger. Resilient detents are mounted within the gripper head body and are normally biased against said plunger yieldably resisting initial forward movement thereof and adapted on such forward movement to retainingly engage said plunger against retraction.
Inventors
- 👤 J Jatcko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:32
CPC Classifications
B; B25; B25B; B25B1/00; B25B1/06; B25B1/18; B25B1/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
345 words
A cam wedge work piece gripper head comprising a body having a longitudinal bore at one end; a plunger reciprocally mounted in said bore and projecting from said body adapted for connection to a reciprocal piston rod; a first pair of jaw arms bearing against opposite sides of the body at their one ends pivotally mounted on said body; a second pair of jaw arms outwardly of and bearing against said first pair of jaw arms, at their one ends pivotally mounted on said body; opposed parallel side plates bearing against said second pair of arms; the pivotal mounting of said arms including a pair of spaced pivot bolts which extend through said side plates, said respective arms and said body; said bolts anchoring the side plates to said body; the other ends of said pairs of arms projecting forwardly of said body and spaced apart adapted on closing to grip a work piece therebetween; resilient detent means on said body yieldably engaging said plunger against initial inward movement relative to said body; there being a detent notch on said plunger normally spaced from said detent means and adapted to operatively and retainingly receive said detent means on inward projection of said plunger; and cam means on said plunger registerable with angularly related slot means in said arms whereby inward and outward movements of said plunger effect relative closing and opening movements of said arms; said body rearwardly of the side plates terminating in a transverse annular flange; an actuating unit having a body, a bore receiving said piston rod and a mounting flange; a pair of opposed coplaner collars, each having an undercut semi-circular recess bearing against said mounting flange and positioned over a rearward portion of said gripper head body with its annular flange nested in said recesses; fasteners between said mounting flange and collars retainingly supporting said gripper head flange in axial alignment with said actuating unit; whereby, on loosening of said fasteners, said gripper head may be rotated relative to said actuating unit in the range of 0 to 360 degrees.
Claim 2
Dependent Claim
345 words
A cam wedge work piece gripper head comprising a body having a longitudinal bore at one end; a plunger reciprocally mounted in said bore and projecting from said body adapted for connection to a reciprocal piston rod; a first pair of jaw arms bearing against opposite sides of the body at their one ends pivotally mounted on said body; a second pair of jaw arms outwardly of and bearing against said first pair of jaw arms, at their one ends pivotally mounted on said body; opposed parallel side plates bearing against said second pair of arms; the pivotal mounting of said arms including a pair of spaced pivot bolts which extend through said side plates, said respective arms and said body; said bolts anchoring the side plates to said body; the other ends of said pairs of arms projecting forwardly of said body and spaced apart adapted on closing to grip a work piece therebetween; resilient detent means on said body yieldably engaging said plunger against initial inward movement relative to said body; there being a detent notch on said plunger normally spaced from said detent means and adapted to operatively and retainingly receive said detent means on inward projection of said plunger; and cam means on said plunger registerable with angularly related slot means in said arms whereby inward and outward movements of said plunger effect relative closing and opening movements of said arms; said body rearwardly of the side plates terminating in a transverse annular flange; an actuating unit having a body, a bore receiving said piston rod and a mounting flange; a pair of opposed coplaner collars, each having an undercut semi-circular recess bearing against said mounting flange and positioned over a rearward portion of said gripper head body with its annular flange nested in said recesses; fasteners between said mounting flange and collars retainingly supporting said gripper head flange in axial alignment with said actuating unit; whereby, on loosening of said fasteners, said gripper head may be rotated relative to said actuating unit in the range of 0 to 360 degrees.
Claim 3
Dependent Claim
339 words
A cam wedge work piece gripper head comprising a body having a longitudinal bore at one end; a plunger reciprocally mounted in said bore and projecting from said body adapted for connection to a reciprocal piston rod; a first pair of jaw arms bearing against opposite sides of the body at their one ends pivotally mounted on said body; a second pair of jaw arms outwardly of and bearing against said first pair of jaw arms, at their one ends pivotally mounted on said body; opposed parallel side plates bearing against said second pair of arms; the pivotal mounting of said arms including a pair of spaced pivot bolts which extend through said side plates, said respective arms and said body; said bolts anchoring the side plates to said body; the other ends of said pairs of arms projecting forwardly of said body and spaced apart adapted on closing to grip a work piece therebetween; resilient detent means on said body yieldably engaging said plunger against initial inward movement relative to said body; there being a detent notch on said plunger normally spaced from said detent means and adapted to operatively and retainingly receive said detent means on inward projection of said plunger; control means on said plunger operatively registerable with said arms whereby inward and outward movements of said plunger effect relative closing and opening movements of said arms, said body rearwardly of the side plates terminating in a transverse annular flange; an actuating unit having a body, a bore receiVing said piston rod and a mounting flange; a pair of opposed coplaner collars, each having an undercut semi-circular recess bearing against said mounting flange and positioned over a rearward portion of said gripper head body with its annular flange nested in said recesses; fasteners between said mounting flange and collars retainingly supporting said gripper head flange in axial alignment with said actuating unit; whereby, on loosening of said fasteners, said gripper head may be rotated relative to said actuating unit in the range of 0* to 360*.
Claim 4
Dependent Claim
339 words
A cam wedge work piece gripper head comprising a body having a longitudinal bore at one end; a plunger reciprocally mounted in said bore and projecting from said body adapted for connection to a reciprocal piston rod; a first pair of jaw arms bearing against opposite sides of the body at their one ends pivotally mounted on said body; a second pair of jaw arms outwardly of and bearing against said first pair of jaw arms, at their one ends pivotally mounted on said body; opposed parallel side plates bearing against said second pair of arms; the pivotal mounting of said arms including a pair of spaced pivot bolts which extend through said side plates, said respective arms and said body; said bolts anchoring the side plates to said body; the other ends of said pairs of arms projecting forwardly of said body and spaced apart adapted on closing to grip a work piece therebetween; resilient detent means on said body yieldably engaging said plunger against initial inward movement relative to said body; there being a detent notch on said plunger normally spaced from said detent means and adapted to operatively and retainingly receive said detent means on inward projection of said plunger; control means on said plunger operatively registerable with said arms whereby inward and outward movements of said plunger effect relative closing and opening movements of said arms, said body rearwardly of the side plates terminating in a transverse annular flange; an actuating unit having a body, a bore receiVing said piston rod and a mounting flange; a pair of opposed coplaner collars, each having an undercut semi-circular recess bearing against said mounting flange and positioned over a rearward portion of said gripper head body with its annular flange nested in said recesses; fasteners between said mounting flange and collars retainingly supporting said gripper head flange in axial alignment with said actuating unit; whereby, on loosening of said fasteners, said gripper head may be rotated relative to said actuating unit in the range of 0* to 360*.
Claim 5
Dependent Claim
328 words
A cam wedge work piece gripper head comprising a body having a longitudinal bore at one end; a plunger reciprocally mounted in said bore and projecting from said body adapted for connection to a reciprocal piston rod; a first pair of jaw arms bearing against opposite sides of the body at their one ends pivotally mounted on said body; a second pair of jaw arms outwardly of and bearing against said first pair of jaw arms, at their one ends pivotally mounted on said body; opposed parallel side plates bearing against said second pair of arms; the pivotal mounting of said arms including a pair of spaced pivot bolts which extend through said side plates, said respective arms and said body; said bolts anchoring the side plates to said body; the other ends of said pairs of arms projecting forwardly of said body and spaced apart adapted on closing to grip a work piece therebetween; resilient detent means on said body yieldably engaging said plunger against initial inward movement relative to said body; there being a pair of opposed detent notches on said plunger normally spaced from said detent means and adapted to operatively and retainingly receive said detent means on inward projection of said plunger; control means on said plunger operatively registerable with said arms whereby inward and outward movements of said plunger effect relative closing and opening movements of said arms; and a tapered cam surface on the forward end of said plunger; said resilient detent means including a pair of opposed spaced bores in said body; and nested in each bore a ball, a resilient member and an adjustable set screw; said opposed balls retainingly engaging said cam surface normally holding said plunger against forward movement and maintaining said jaw arms open; whereby on forward movement of said plunger, said balls are retracted and successively nest within said detent notches to operatively and retainingly engage said plunger for securing said jaws in a closed position.
Claim 6
Dependent Claim
328 words
A cam wedge work piece gripper head comprising a body having a longitudinal bore at one end; a plunger reciprocally mounted in said bore and projecting from said body adapted for connection to a reciprocal piston rod; a first pair of jaw arms bearing against opposite sides of the body at their one ends pivotally mounted on said body; a second pair of jaw arms outwardly of and bearing against said first pair of jaw arms, at their one ends pivotally mounted on said body; opposed parallel side plates bearing against said second pair of arms; the pivotal mounting of said arms including a pair of spaced pivot bolts which extend through said side plates, said respective arms and said body; said bolts anchoring the side plates to said body; the other ends of said pairs of arms projecting forwardly of said body and spaced apart adapted on closing to grip a work piece therebetween; resilient detent means on said body yieldably engaging said plunger against initial inward movement relative to said body; there being a pair of opposed detent notches on said plunger normally spaced from said detent means and adapted to operatively and retainingly receive said detent means on inward projection of said plunger; control means on said plunger operatively registerable with said arms whereby inward and outward movements of said plunger effect relative closing and opening movements of said arms; and a tapered cam surface on the forward end of said plunger; said resilient detent means including a pair of opposed spaced bores in said body; and nested in each bore a ball, a resilient member and an adjustable set screw; said opposed balls retainingly engaging said cam surface normally holding said plunger against forward movement and maintaining said jaw arms open; whereby on forward movement of said plunger, said balls are retracted and successively nest within said detent notches to operatively and retainingly engage said plunger for securing said jaws in a closed position.
Claim 7
Dependent Claim
334 words
A cam wedge work piece gripper head comprising a body having a longitudinal bore at one end; a plunger reciprocally mounted in said bore and projecting from said body adapted for connection to a reciprocal piston rod; a first pair of jaw arms bearing against opposite sides of the body at their one ends pivotally mounted on said body; a second pair of jaw arms outwardly of and bearing against said first pair of jaw arms, at their one ends pivotally mounted on said body; opposed parallel side plates bearing against said second pair of arms; the pivotal mounting of said arms including a pair of spaced pivot bolts which extend through said side plates, said respective arms and said body; said bolts anchoring the side plates to said body; the other ends of said pairs of arms projecting forwardly of said body and spaced apart adapted on closing to grip a work piece therebetween; resilient detent means on said body yieldably engaging said plunger against initial inward movement relative to said body; there being opposed longitudinally spaced detent notches on said plunger; control means on said plunger operatively registerable with said arms whereby inward and outward movements of said plunger effect relative closing and opening movements of said arms; a tapered cam surface on the forward end of said plunger; said resilient detent means inclUding longitudinally spaced pairs of opposed spaced bores in said body; and nested in each bore, a ball, a resilient member and an adjustable set screw, one opposed pair of balls being normally nested in one opposed pair of plunger notches and the other pair of balls retainingly bearing against said cam surface normally holding said plunger against forward movement and maintaining said jaws open; and whereby, on forward movement of said plunger, said sets of balls are retracted and successively nest within said detent notches on said plunger to operatively and retainingly engage said plunger at a plurality of points for securing said jaws in a closed position.
Claim 8
Dependent Claim
334 words
A cam wedge work piece gripper head comprising a body having a longitudinal bore at one end; a plunger reciprocally mounted in said bore and projecting from said body adapted for connection to a reciprocal piston rod; a first pair of jaw arms bearing against opposite sides of the body at their one ends pivotally mounted on said body; a second pair of jaw arms outwardly of and bearing against said first pair of jaw arms, at their one ends pivotally mounted on said body; opposed parallel side plates bearing against said second pair of arms; the pivotal mounting of said arms including a pair of spaced pivot bolts which extend through said side plates, said respective arms and said body; said bolts anchoring the side plates to said body; the other ends of said pairs of arms projecting forwardly of said body and spaced apart adapted on closing to grip a work piece therebetween; resilient detent means on said body yieldably engaging said plunger against initial inward movement relative to said body; there being opposed longitudinally spaced detent notches on said plunger; control means on said plunger operatively registerable with said arms whereby inward and outward movements of said plunger effect relative closing and opening movements of said arms; a tapered cam surface on the forward end of said plunger; said resilient detent means inclUding longitudinally spaced pairs of opposed spaced bores in said body; and nested in each bore, a ball, a resilient member and an adjustable set screw, one opposed pair of balls being normally nested in one opposed pair of plunger notches and the other pair of balls retainingly bearing against said cam surface normally holding said plunger against forward movement and maintaining said jaws open; and whereby, on forward movement of said plunger, said sets of balls are retracted and successively nest within said detent notches on said plunger to operatively and retainingly engage said plunger at a plurality of points for securing said jaws in a closed position.
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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |