US4773656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clamping shaft
Assignee: Individual
•
Filing: 1987-05-01
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Granted: 1988-09-27
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Expires: 2007-05-01
Abstract
Abstract A clamping shaft for clamping a surrounding socket component comprising: a tubular shaft characterized by a tubular body provided with radially spaced slots through which expansion wedges may be extended and retracted for engagement with and disengagement from, respectively, the socket component. A connecting rod, concentrically supported within the shaft, is provided with sloping surfaces thereon engageable with corresponding sloping surfaces on the expansion wedges for effecting movement of the expansion wedges in response to axial movement of the connecting rod. Shifting apparatus carried by the shaft effects axial movement of the connecting rod.
Inventors
- 👤 Otto Chlupsa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:14
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/18; B65H75/24; B65H75/242; B65H75/248; B65H75/2484; B23; B23B; B23B31/00; B23B31/40; B23B31/404; B23B31/4046; F; F16; F16D; F16D1/00; F16D1/06; F16D1/08; F16D1/0852; F16D1/087; F16C; F16C3/00; F16C3/02; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1021; Y10T279/1033; Y10T279/1037; Y10T279/1041; Y10T279/1054
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
203 words
A clamping shaft for clamping a surrounding socket or socket-like component comprising: a shaft characterized by a tubular body at the opposite ends of which are trunnions to permit rotation of said shaft, said tubular body being provided with radially spaced longitudinal slots through which physical communication is established between the exterior and interior of said tubular body; expansion wedges supported within said tubular body for movement between retracted positions, within said tubular body, and extended positions in which said wedges extend through said slots for clamping engagement with said surrounding socket component; spring means engageable with said expansion wedges biasing said wedges toward said retracted positions; a connecting rod concentrically supported within said shaft and having sloping surfaces thereon engageable with corresponding sloping surfaces on said expansion wedges for effecting said movement of said expansion wedges in response to axial movement of said connecting rod; and means carried by said shaft for effecting said axial movement of said connecting rod including a pneumatic motor to which compressed air may be supplied for rotation thereof and translating means connecting said pneumatic motor and said connecting rod, said translating means converting rotational movement of said pneumatic motor to axial movement of said connecting rod.
Claim 2
Dependent Claim
203 words
A clamping shaft for clamping a surrounding socket or socket-like component comprising: a shaft characterized by a tubular body at the opposite ends of which are trunnions to permit rotation of said shaft, said tubular body being provided with radially spaced longitudinal slots through which physical communication is established between the exterior and interior of said tubular body; expansion wedges supported within said tubular body for movement between retracted positions, within said tubular body, and extended positions in which said wedges extend through said slots for clamping engagement with said surrounding socket component; spring means engageable with said expansion wedges biasing said wedges toward said retracted positions; a connecting rod concentrically supported within said shaft and having sloping surfaces thereon engageable with corresponding sloping surfaces on said expansion wedges for effecting said movement of said expansion wedges in response to axial movement of said connecting rod; and means carried by said shaft for effecting said axial movement of said connecting rod including a pneumatic motor to which compressed air may be supplied for rotation thereof and translating means connecting said pneumatic motor and said connecting rod, said translating means converting rotational movement of said pneumatic motor to axial movement of said connecting rod.
Claim 3
Dependent Claim
65 words
A clamping shaft as set forth in claim 1 in which said pneumatic motor comprises a turbine wheel by which rotary motion is imparted to said pneumatic motor, said shaft being provided with first and second inlets by which said compressed air may be supplied to said turbine wheel for rotation and an outlet through which said compressed air may exit from said turbine wheel.
Claim 4
Dependent Claim
103 words
A clamping shaft as set forth in claim 2 in which said turbine wheel is rotatable in one direction when compressed air is supplied through said first inlet and in the opposite direction when compressed air is supplied through said second inlet, said connecting rod moving in a first axial direction in response to said turbine wheel rotating in said first direction to effect movement of said expansion wedges to said extended positions and in a second and opposite axial direction in response to said turbine wheel rotating in said second direction to effect movement of said expansion wedges to said retracted positions.
Claim 5
Dependent Claim
24 words
A clamping shaft as set forth in claim 3 including spring means engageable with said expansion wedges biasing said wedges toward said retracted positions.
Claim 6
Dependent Claim
81 words
A clamping shaft as set forth in claim 1 in which said means for effecting said axial movement of said connecting rod comprises a thread bushing carried by said shaft having internal threads engaging external threads provided on the exterior of said connecting rod, one end of said connecting rod having a polyhedral configuration engageable with a tool for rotation thereof, said rotation being translated through said thread bushing to axial movement of said connecting rod independent of said pneumatic motor.
References Cited (Backward Citations)
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Cited
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Cited
CH302986A
Cited
US2850287A
Cited
DE1140428B
Cited
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-27 | 1992-03-28 | 1992-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-27 | 1996-03-28 | 1996-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-27 | 2000-03-28 | 2000-09-27 | $7700.00 | Window Closed / Lapsed |