Patent US2040953A successfully refreshed from Google Patents.
US3884094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary tool guard
Assignee: COMMERCE UNION BANK
•
Filing: 1974-05-23
•
Granted: 1975-05-20
•
Expires: 1994-05-23
Abstract
Abstract A rotary tool guard, and more particularly a shaper guard, including a disc-shaped guard member having a bearing member rotatably mounted upon the vertical spindle above the rotary tool for rotary movement independently of the tool. The rotary tool guard may also be provided with means for holding the guard member stationary, even while the spindle is rotating.
Inventors
- 👤 Jamie F Ulmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:31
CPC Classifications
F; F16; F16P; F16P1/00; F16P1/04; B; B23; B23Q; B23Q11/00; B23Q11/08; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/219; Y10T74/2191
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
100 words
A guard for a rotary tool apparatus having a platform, a vertical spindle projecting above said platform and rotatably driven about its vertical axis, and a rotary tool fixed to the portion of the spindle adjacent and above said platform for operating upon work upon said platform in engagement with said tool, comprising: a. a disc-shaped guard member having a diameter greater than the maximum diameter of the swath of said rotary tool, and b. bearing means rotatably mounting said guard member coaxially upon said spindle above said rotary tool, whereby said guard member may rotate independently of said spindle.
Claim 2
Dependent Claim
100 words
A guard for a rotary tool apparatus having a platform, a vertical spindle projecting above said platform and rotatably driven about its vertical axis, and a rotary tool fixed to the portion of the spindle adjacent and above said platform for operating upon work upon said platform in engagement with said tool, comprising: a. a disc-shaped guard member having a diameter greater than the maximum diameter of the swath of said rotary tool, and b. bearing means rotatably mounting said guard member coaxially upon said spindle above said rotary tool, whereby said guard member may rotate independently of said spindle.
Claim 3
Dependent Claim
77 words
The invention according to claim 1 in which said guard member has an opening through the center thereof, said bearing means comprising an outer race fixed to said guard member coaxially within said opening, said bearing means further comprising an inner race within said outer race and means fixing said inner race to said spindle, and at least one bearing member between said inner and outer races to permit independent rotation between said inner and outer races.
Claim 4
Dependent Claim
32 words
The invention according to claim 2 in which the said means for fixing said inner race to said spindle comprises cooperating threads in opposed surfaces of said inner race and said spindle.
Claim 5
Dependent Claim
27 words
The invention according to claim 3 further comprising nut means threadedly secured to the threaded portion of said spindle in various vertically adjusted positions on said spindle.
Claim 6
Dependent Claim
23 words
The invention according to claim 4 further comprising a spacer member mounted on said spindle between said inner race and said rotary tool.
Claim 7
Dependent Claim
30 words
The invention according to claim 2 in which said guard member has a major annular body portion between said opening and the rim of said guard member of solid material.
Claim 8
Dependent Claim
13 words
The invention according to claim 6 in which said solid material is transparent.
Claim 9
Dependent Claim
24 words
The invention according to claim 6 in which said rim is made of soft resilient material surrounding the periphery of said annular body portion.
Claim 10
Dependent Claim
27 words
The invention according to claim 1 further comprising means for selectively engaging said guard member and holding said guard member stationary, even while said spindle is rotating.
Claim 11
Dependent Claim
42 words
The invention according to claim 9 in which said holding means comprises a stopping element mounted on said platform outside said rim and adapted to be reciprocably moved toward and away from engagement with said rim diametrically of said disc-shaped guard member.
Claim 12
Dependent Claim
61 words
The invention according to claim 9 in which said holding means comprises an opening through the thickness of said guard member and a corresponding opening in said platform, and further comprising a locking pin adapted to fit through the opening in said guard member and to be received in the opening in said platform when said openings are in vertical alignment.
References Cited (Backward Citations)
US955482A
Cited
US1947885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |