Patent US1108721A successfully refreshed from Google Patents.
US4120130A
Expired / Lapsed
US
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Clamping device
Assignee: HIRZEL PAUL H
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Filing: 1977-09-19
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Granted: 1978-10-17
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Expires: 1997-09-19
Abstract
Abstract A clamping or connecting device for detachably connecting two plates disposed with respect to each other at an angle which may be selected within a large range of angles. The clamping device comprises two clamping jaws connected to each other by bolt means and forming bearing seats on opposite sides of the bolt means, the bearing seats having cylindrical inner surfaces for receiving cylindrical clamping bodies which are rotatable in their bearing seats about a respective axis approximately perpendicular to the bolt means as long as the clamping device is in an unmounted state, the clamping bodies consisting of two separate clamping elements the cross sectional area of which is in the form of a segment of a circular surface so that each clamping element has an arcuate and a plane side surface portion. The clamping elements consist of a hard material, such as metal or a hard plastic material. Plates of different thickness dimensions may be clamped or connected to each other without having to change parts of the clamping device.
Inventors
- 👤 Felix Puschkarski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:55
CPC Classifications
E; E04; E04H; E04H1/00; E04H1/12; E04H1/1272; E04B; E04B1/00; E04B1/38; E04B1/61; E04B1/6108; E04B1/6112; F; F16; F16B; F16B5/00; F16B5/06; F16B5/0607; E04B2001/6195; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32532; Y10T403/46; Y10T403/4602; Y10T403/57; Y10T403/5761; Y10T403/5766; Y10T403/5781
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
121 words
A clamping device for detachably connecting two plates disposed at an angle with respect to each other, the device comprising two clamping jaws connected to each other by bolt means and forming bearing seats on opposite sides of the bolt means, the bearing seats having cylindrical inner surfaces, cylindrical clamping bodies disposed and rotatable in each of said bearing seats about an axis approximately perpendicular to the bolt means as long as the clamping device is in an unmounted state, each of said clamping bodies consisting of a separate clamping element the cross sectional area of which has the form of a segment of a circular surface so that each clamping element has an arcuate and a plane side surface portion.
Claim 2
Dependent Claim
121 words
A clamping device for detachably connecting two plates disposed at an angle with respect to each other, the device comprising two clamping jaws connected to each other by bolt means and forming bearing seats on opposite sides of the bolt means, the bearing seats having cylindrical inner surfaces, cylindrical clamping bodies disposed and rotatable in each of said bearing seats about an axis approximately perpendicular to the bolt means as long as the clamping device is in an unmounted state, each of said clamping bodies consisting of a separate clamping element the cross sectional area of which has the form of a segment of a circular surface so that each clamping element has an arcuate and a plane side surface portion.
Claim 3
Dependent Claim
38 words
The device of claim 1, wherein the clamping elements consist of plastic material which is substantially hard and provides sufficient friction between the clamping elements and the surfaces of the plates to retain the same in mutual engagement.
Claim 4
Dependent Claim
24 words
The device of claim 1, wherein the clamping elements comprise substantially hard material and have layers of elastomeric material on the plane surfaces thereof.
Claim 5
Dependent Claim
28 words
The device of claim 1, further comprising means for holding the clamping elements of each clamping body in engagement with the inside surfaces of the corresponding bearing seat.
Claim 6
Dependent Claim
25 words
The device of claim 4, wherein the clamping elements are held by a form-locking arrangement in engagement with the inside surfaces of the bearing seats.
Claim 7
Dependent Claim
20 words
The device of claim 5, wherein a dovetail joint comprising an undercut annular groove and a corresponding land is provided.
Claim 8
Dependent Claim
38 words
The device of claim 4, wherein the two clamping elements of a clamping body are held in engagement with the inside surfaces of the bearing seat by the initial tension of resilient means acting between the clamping elements.
Claim 9
Dependent Claim
37 words
The device of claim 7, wherein the two clamping elements are connected to each other by means of at least one strip of resilient material which strip extends between the adjacent axial edges of the clamping elements.
Claim 10
Dependent Claim
33 words
The device of claim 8, wherein the material strip and the layers of elastomeric material on the plane surfaces of the two clamping elements of a clamping body are formed in one piece.
Claim 11
Dependent Claim
42 words
The device of claim 8, wherein the breadth of the material strip is substantially smaller than the height of the clamping element, and the clamping elements each have a groove-like recess adjacent each material strip for receiving at least a part thereof.
Claim 12
Dependent Claim
53 words
The device of claim 1, wherein each clamping element comprises a plurality of bores opening to the plane side surfaces of the clamping elements and being displaced with respect to each other transversely to the cylinder axis, said bores being adapted to receive a securing pin extending through the plate to be clamped.
Claim 13
Dependent Claim
23 words
The device of claim 1, wherein the inside surfaces of the bearing seats and/or the arcuate surfaces of the clamping elements are roughened.
Claim 14
Dependent Claim
26 words
The device of claim 12, wherein the inside surfaces of the bearing seats and/or the arcuate surfaces of the clamping elements are provided with axial serrations.
Claim 15
Dependent Claim
20 words
The device of claim 1, wherein the two clamping elements of a particular clamping body have chords of different length.
Claim 16
Dependent Claim
20 words
The device of claim 1, wherein the bolt means comprises a threaded bolt and a nut screwed on said bolt.
Claim 17
Dependent Claim
30 words
The device of claim 15, wherein at least one clamping jaw has a through-hole for the threaded bolt, the through-hole flaring conically to the inside of the respective clamping jaw.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-16 | 1982-04-17 | 1982-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-16 | 1986-04-17 | 1986-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-16 | 1990-04-17 | 1990-10-17 | $7700.00 | Window Closed / Lapsed |