US3797955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boring and punching device
Assignee: Individual
•
Filing: 1972-11-10
•
Granted: 1974-03-19
•
Expires: 1992-11-10
Abstract
Abstract A boring and punching device in which a double acting fluid pressure operable piston is reciprocally mounted in a cylinder and divides the cylinder into two cylinder sections one of which is adapted per time unit to be acted upon by two different quantities of pressure fluid for boring and punching respectively. The device furthermore includes a connecting rod connected to the piston and having an axial passage therethrough through which extends a rotatable spindle. A tool holder is detachably and exchangeably connected to the lower end of the connecting rod and is adapted selectively to receive a punching tool or a boring tool which latter is adapted to be rotatably connected to the spindle.
Inventors
- 👤 W Peddinghaus
- 👤 L Regnebrecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:51
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/26; B23Q5/261; Y; Y10; Y10T; Y10T408/00; Y10T408/31; Y10T408/55; Y10T408/561; Y10T408/5626; Y10T408/65; Y10T408/675; Y10T408/6757
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
201 words
A boring and punching device, which includes: a cylinder, a double acting piston reciprocable in said cylinder and dividing the interior of said cylinder into first and second cylinder chamber means varying in size in conformity with the movement of said piston, a connecting rod having an axial passage therethrough and being connected to and reciprocable with said piston, a rotatable spindle rotatably arranged within said axial passage, tool holding means detachably connectable to that end portion of said connecting rod which is remote from said piston for selectively connecting thereto a boring tool or a punching tool, one end of said spindle being adjacent said tool holding means and being provided with means for driving engagement with a boring tool in said tool holding means, conduit means connectable to a fluid source and respectively leading to said first and second cylinder chamber means, and control valve means interposed in said conduit means and operable to control the supply of pressure fluid through said conduit means to one of said cylinder means so as to furnish per time unit selectively a greater and a smaller quantity of fluid under pressure to said one cylinder chamber means for boring and punching respectively.
Claim 2
Dependent Claim
201 words
A boring and punching device, which includes: a cylinder, a double acting piston reciprocable in said cylinder and dividing the interior of said cylinder into first and second cylinder chamber means varying in size in conformity with the movement of said piston, a connecting rod having an axial passage therethrough and being connected to and reciprocable with said piston, a rotatable spindle rotatably arranged within said axial passage, tool holding means detachably connectable to that end portion of said connecting rod which is remote from said piston for selectively connecting thereto a boring tool or a punching tool, one end of said spindle being adjacent said tool holding means and being provided with means for driving engagement with a boring tool in said tool holding means, conduit means connectable to a fluid source and respectively leading to said first and second cylinder chamber means, and control valve means interposed in said conduit means and operable to control the supply of pressure fluid through said conduit means to one of said cylinder means so as to furnish per time unit selectively a greater and a smaller quantity of fluid under pressure to said one cylinder chamber means for boring and punching respectively.
Claim 3
Dependent Claim
17 words
A device according to claim 1, in which said control valve means includes a quantity control valve.
Claim 4
Dependent Claim
29 words
A device according to claim 1, which includes C-shaped yoke means having an upper flange supporting said cylinder and having a lower flange forming a boring and punching table.
Claim 5
Dependent Claim
35 words
A device according to claim 3, in which said lower flange has recess means for selectively receiving a matrix for cooperation with a punching tool or a counter bearing for cooperation with a drilling tool.
Claim 6
Dependent Claim
38 words
A device according to claim 1, in which said tool holding means includes a tool sleeve rotatably connectable to that end portion of said spindle which is remote from said piston for receiving and holding a boring tool.
Claim 7
Dependent Claim
21 words
A device according to claim 5, which includes bushing means supported by said connecting rod and rotatably supporting said tool sleeve.
Claim 8
Dependent Claim
41 words
A device according to claim 6, in which said tool sleeve together with said bushing and a boring tool in said tool sleeve forms a unit adapted as a unit to be operaTively connected to and disconnected from said connecting rod.
Claim 9
Dependent Claim
20 words
A device according to claim 5, in which said tool holding means includes a holder for receiving a punching tool.
Claim 10
Dependent Claim
32 words
A device according to claim 1, which includes motor means having its shaft in substantially axial alignment with said spindle, and connecting means detachably drivingly connecting said motor means to said spindle.
References Cited (Backward Citations)
US3164040A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |