US3762730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically actuated spline arbor and chuck construction
Assignee: Individual
•
Filing: 1972-03-09
•
Granted: 1973-10-02
•
Expires: 1992-03-09
Abstract
Abstract Hydraulically actuated spline arbor and chuck devices having a novel configuration for the spline teeth to produce axially spaced straightening engagement and accurate centering of a splined part engaged by the arbor or chuck. The hydraulic actuation includes novel sealing means allowing a significant increase in the maximum hydraulic pressure obtainable and maximum permissible expansion of the spline without leakage as compared to prior seals rendering practical the relatively greater expansion for registration on pitch diameter or side teeth than in the case of cylindrical configurations. The invention is applicable to a variety of spline configurations including involute and square splines.
Inventors
- 👤 G Cameron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:55
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/24; B23B31/30; B23B31/305; B23B31/025; B23B31/40; B23B31/4006; B23B31/402; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1021; Y10T279/1024; Y10T279/12; Y10T279/1241; Y10T279/28
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
51 words
A spline holder comprising a body having a spline formed Thereon, actuation means to change the effective radius of the spline, and characterized by relieved surfaces on portions of the spline initially engageable with complementary spline portions of a work piece upon actuation of the means to change the effective radius.
Claim 2
Dependent Claim
51 words
A spline holder comprising a body having a spline formed Thereon, actuation means to change the effective radius of the spline, and characterized by relieved surfaces on portions of the spline initially engageable with complementary spline portions of a work piece upon actuation of the means to change the effective radius.
Claim 3
Dependent Claim
22 words
The holder of claim 1 wherein the relieved surfaces provide two axially spaced circumferential locations of initial engagement with a work piece.
Claim 4
Dependent Claim
16 words
The holder of claim 1 wherein the body includes radial slits located to facilitate spline deflection.
Claim 5
Dependent Claim
17 words
The holder of claim 3 wherein the relieved surfaces extend less than the length of the slits.
Claim 6
Dependent Claim
21 words
The holder of claim 3 wherein said slits are employed in involute spline roots fewer than the number of spline teeth.
Claim 7
Dependent Claim
21 words
The holder of claim 3 wherein said slits are employed in involute spline roots equal to the number of spline teeth.
Claim 8
Dependent Claim
13 words
The holder of claim 3 wherein the holder is an involute spline arbor.
Claim 9
Dependent Claim
13 words
The holder of claim 3 wherein the body is an involute spline chuck.
Claim 10
Dependent Claim
19 words
The holder of claim 3 wherein the body includes slits extending through at least some of the spline teeth.
Claim 11
Dependent Claim
13 words
The holder of claim 9 wherein the body is a square spline arbor.
Claim 12
Dependent Claim
13 words
The holder of claim 9 wherein the body is a square spline chuck.
Claim 13
Dependent Claim
118 words
A workpiece holder comprising an annular body having a radially slitted deflectable tubular work piece engageable portion, a plastic tube extending adjacent and beyond either end of said portion radially actuable hydraulically to deflect said portion radially into work piece engagement, an annular hydraulic chamber for pressurized actuating fluid adjacent one wall of said tube, either end of said tube being beveled to provide a conical shoulder, an annular seal engaging said shoulder, a corner seat for said seal having a leak passage blocked thereby otherwise communicating with said pressurized actuating fluid, said conical shoulder being adapted to additionally pressurize said seal into sealing engagement with said corner seat in response to hydraulically actuated deflection of said tube.
Claim 14
Dependent Claim
118 words
A workpiece holder comprising an annular body having a radially slitted deflectable tubular work piece engageable portion, a plastic tube extending adjacent and beyond either end of said portion radially actuable hydraulically to deflect said portion radially into work piece engagement, an annular hydraulic chamber for pressurized actuating fluid adjacent one wall of said tube, either end of said tube being beveled to provide a conical shoulder, an annular seal engaging said shoulder, a corner seat for said seal having a leak passage blocked thereby otherwise communicating with said pressurized actuating fluid, said conical shoulder being adapted to additionally pressurize said seal into sealing engagement with said corner seat in response to hydraulically actuated deflection of said tube.
Claim 15
Dependent Claim
32 words
A workpiece holding arbor as set forth in claim 12 wherein said tube is hydraulically actuated to expand radially outwardly and said conical shoulder responsively exerts radially inward compression on said seal.
Claim 16
Dependent Claim
32 words
A workpiece holding chuck as set forth in claim 12 wherein said tube is hydraulically actuated to contract radially inwardly and said conical shoulder responsively exerts radially outward compression on said seal.
Claim 17
Dependent Claim
24 words
The holder of claim 12 wherein said conical shoulder extends at an angle within the range of 30* to 60* to a radial plane.
Claim 18
Dependent Claim
20 words
The holder of claim 12 wherein said conical shoulder extends at an angle of approximately 45* to a radial plane.
References Cited (Backward Citations)
GB736057A
Cited
US2960342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |