Patent US3703124A successfully refreshed from Google Patents.
US3703124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tool guard and/or safety shield
Assignee: Individual
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Filing: 1971-06-07
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Granted: 1972-11-21
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Expires: 1991-06-07
Abstract
Abstract A machine tool guard and/or safety shield to protect the machine operator from flying chips, coolant liquids, such as oils, and other materials, and to provide protection from contact with the machine moving parts, wherein the device is readily attachable to a machine tool and is provided with a body having a slot for receiving a shield or protective guard removably secured thereto, and wherein the shield or guard is clamped by a plunger which is operated by a manual lever, and wherein the plunger is normally biased to retain the shield or guard, and wherein the plunger may be retracted by manual means to permit release of the guard or shield.
Inventors
- 👤 William Smith
- 👤 Charles E Mcgrath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:17
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/08; B23Q11/0891; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30392
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
103 words
A machine tool guard comprising a body having a slotted or recessed portion adjacent the front of said body for receiving a shield or guard removably secured in said slot, a plunger horizontally supported in said body and having means at the front of said plunger adapted to extend into said slot to engage the shield or guard to retain it in position in said slot, means for retracting said plunger to disengage said plunger from said shield and to permit removal of said shield or guard, and means for retaining said body on the surface of the machine tool or the like.
Claim 2
Dependent Claim
103 words
A machine tool guard comprising a body having a slotted or recessed portion adjacent the front of said body for receiving a shield or guard removably secured in said slot, a plunger horizontally supported in said body and having means at the front of said plunger adapted to extend into said slot to engage the shield or guard to retain it in position in said slot, means for retracting said plunger to disengage said plunger from said shield and to permit removal of said shield or guard, and means for retaining said body on the surface of the machine tool or the like.
Claim 3
Dependent Claim
103 words
A machine tool guard comprising a body having a slotted or recessed portion adjacent the front of said body for receiving a shield or guard removably secured in said slot, a plunger horizontally supported in said body and having means at the front of said plunger adapted to extend into said slot to engage the shield or guard to retain it in position in said slot, means for retracting said plunger to disengage said plunger from said shield and to permit removal of said shield or guard, and means for retaining said body on the surface of the machine tool or the like.
Claim 4
Dependent Claim
103 words
A machine tool guard comprising a body having a slotted or recessed portion adjacent the front of said body for receiving a shield or guard removably secured in said slot, a plunger horizontally supported in said body and having means at the front of said plunger adapted to extend into said slot to engage the shield or guard to retain it in position in said slot, means for retracting said plunger to disengage said plunger from said shield and to permit removal of said shield or guard, and means for retaining said body on the surface of the machine tool or the like.
Claim 5
Dependent Claim
27 words
A device as set forth in claim 1 in which a plurality of plungers are horizontally supported in the body with said plurality of plungers simultaneously retractable.
Claim 6
Dependent Claim
32 words
A device as set forth in claim 1 in which the plunger is spring biased to normally urge said plunger forwardly to extend into the slot to engage the guard or shield.
Claim 7
Dependent Claim
35 words
A device as set forth in claim 3 in which the means for manually retracting the plunger includes a lever which is pivotally connected to a lever bar secured to the rear of the plunger.
Claim 8
Dependent Claim
78 words
A device as set forth in claim 2 in which a bar is secured to the rear of the plungers with the bar supported rearwardly of the body and in which the bar supports a manually operated lever which will move the bar rearwardly in spaced relation to the rear of the body to retract the plungers and wherein the plungers are spring biased to normally urge them forwardly except when said lever acts to retract the plungers.
Claim 9
Dependent Claim
24 words
A device as set forth in claim 1 in which the body is provided with means for attaching the unit to a cutting machine.
Claim 10
Dependent Claim
40 words
A deVice as set forth in claim 6 in which the body has a vertical bore adapted to receive a bolt connected at its lower end to a nut, which nut is secured to the work table of the machine.
Claim 11
Dependent Claim
25 words
A device as set forth in claim 6 in which the body is detachably secured to a surface of the machine tool by magnetic means.
Claim 12
Dependent Claim
39 words
A device as set forth in claim 1 in which the guard or shield is formed of a strip of board or the like which is capable of being manually bent to a desired shape at its opposite ends.
Claim 13
Dependent Claim
87 words
A device as set forth in claim 1 in which the plunger is spring biased to normally urge same forwardly so that the front end of the plunger extends into the recess for a locking engagement with the guard and in which the rear of the plunger is attached to a bar extending rearwardly of the body and in which a lever is pivotally supported on said bar to move said bar relative to said body to either retract the plunger or to move the plunger forwardly.
References Cited (Backward Citations)
US1812452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |