US3633900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-jaw machine vise
Assignee: Individual
•
Filing: 1970-06-19
•
Granted: 1972-01-11
•
Expires: 1990-06-19
Abstract
Abstract A three-jaw machine vise having universally movable jaws which are supported on carriers movable relative to a backplate or base and so constructed that an elongated workpiece can be loaded from the top or side between a pair of the jaws and in movement toward the third jaw.
Inventors
- 👤 Gunnar E Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:12
CPC Classifications
B; B23; B23Q; B23Q3/00; B23Q2703/00; Y; Y10; Y10T; Y10T279/00; Y10T279/19
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
209 words
A top-loading three-jaw machine vise for holding a workpiece on a center spaced between the three jaws and comprising a backplate having means thereon for guiding a pair of generally opposed side jaw carriers in movement relative to each other and to said backplate along respective paths which diverge upwardly and toward the sides of the backplate from a point of intersection spaced vertically below said center, a mirror image pair of side jaw carriers movable on their said paths toward and away from said point in the respective closing and opening operation of the vise, a bottom jaw carrier having means thereon effecting a sliding connection with each side jaw carrier, said means effecting such sliding connection being constructed and arranged to effect vertical movement of said bottom jaw carrier in a path between said point and said center with movement of said side jaw carriers, the said bottom jaw carrier moving toward and away from said center in the respective closing and opening operation of the vise, and a jaw on each of said jaw carriers having a work-engaging face, the jaw faces on the side carriers engaging the work above said center and the jaw face on the bottom carrier engaging the work below said center.
Claim 2
Dependent Claim
209 words
A top-loading three-jaw machine vise for holding a workpiece on a center spaced between the three jaws and comprising a backplate having means thereon for guiding a pair of generally opposed side jaw carriers in movement relative to each other and to said backplate along respective paths which diverge upwardly and toward the sides of the backplate from a point of intersection spaced vertically below said center, a mirror image pair of side jaw carriers movable on their said paths toward and away from said point in the respective closing and opening operation of the vise, a bottom jaw carrier having means thereon effecting a sliding connection with each side jaw carrier, said means effecting such sliding connection being constructed and arranged to effect vertical movement of said bottom jaw carrier in a path between said point and said center with movement of said side jaw carriers, the said bottom jaw carrier moving toward and away from said center in the respective closing and opening operation of the vise, and a jaw on each of said jaw carriers having a work-engaging face, the jaw faces on the side carriers engaging the work above said center and the jaw face on the bottom carrier engaging the work below said center.
Claim 3
Dependent Claim
40 words
A vise as defined in claim 1 wherein said backplate has a notch in its upper edge to accommodate loading and unloading of workpieces which are to be supported in the vise with a portion extending rearwardly of the backplate.
Claim 4
Dependent Claim
74 words
A vise as defined in claim 1 wherein the guide means on said backplate and the means effecting sliding connection between said bottom jaw carrier and the side jaw carriers are so constructed and arranged with respect to each other that all three jaw carriers move distances equal to each other for any movement of any carrier, the side jaw carriers along their intersecting paths and the bottom jaw carrier along its vertical path.
Claim 5
Dependent Claim
41 words
A vise as defined in claim 3 wherein the paths of said side jaw carriers diverge from said point of intersection each at an angle of 60* from a vertical line extending upwardly from said point of intersection to saiD center.
Claim 6
Dependent Claim
28 words
A vise as set forth in claim 4 wherein the guide means on said backplate also includes a guide for the vertical movement of said bottom jaw carrier.
Claim 7
Dependent Claim
67 words
A vise as set forth in claim 4 wherein the jaw face on each of the three jaws is disposed at a right angle to the path of movement of its associated jaw carrier and whereby workpieces of circular cross section but of different diameter will all be supported on the same center and engaged by jaw faces at points circumaxially spaced 120* apart about said center.
Claim 8
Dependent Claim
50 words
A vise as set forth in claim 6 wherein the means for guiding the side jaw carriers relative to said backplate comprises tongue and groove connections therebetween and the means effecting a sliding connection between the bottom jaw carrier and each side jaw carrier also comprises a tongue and groove.
Claim 9
Dependent Claim
41 words
A vise as set forth in claim 7 wherein said backplate has a notch in its upper edge to accommodate loading and unloading of workpieces which are to be supported in the vise with a portion extending rearwardly of the backplate.
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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |