US3947138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper pad clamping fixture
Assignee: ORAVISUAL CO Inc
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Filing: 1974-11-27
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Granted: 1976-03-30
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Expires: 1994-11-27
Abstract
Abstract A clamping fixture detachably mountable on an easel, or wall, mounted upright, support board hanging a heavy stack of large paper sheets against the front face of the support board so that the stack may be readily removed or rearranged, or the sheets torn off one-by-one. The fixture comprises a back support member, a top clamp housing member, and a blade member. The blade member and the clamp housing are pivotally connected to each other so as to move in unison when the clamp housing is pivoted about the back support member for inserting or removing a stack of papers. The blade member also acts as a clamping member and is tensioned for automatically adapting to the thickness of the sheets or pads of paper and means are provided for quickly and automatically permitting the fixture to open and then snap lock automatically in closed position, making the insertion and removal of display sheets or pads an effortless task.
Inventors
- 👤 Raymond H. Eshelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:10
CPC Classifications
B; B42; B42F; B42F9/00; Y; Y10; Y10T; Y10T24/00; Y10T24/20; Y10T24/202; Y10T24/44; Y10T24/44291; Y10T24/44376; Y10T24/44385; Y10T24/44479
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
192 words
A clamping fixture for hanging and clamping a heavy stack of large sheets of paper against the front surface of an upright support board in condition to be torn off one-by-one comprising: a back support member adapted to be supported on the top edge of said upright support board; a clamping member pivotally attached to said support member; a tear blade member pivotally attached to said clamping member and adapted to swing with said clamping member when the latter is swung about its pivotal attachment to open said clamping fixture for the insertion of paper therein, said tear blade member engaging the paper and clamping the same against the front surface of the upright support board when the clamping member and tear blade are again swung in a closed position; and resilient tensioning means between said clamping member and said tear blade member resiliently urging the tear blade member against the paper when said fixture is in closed position and wherein said pivotal attachment of said tear blade and member to said clamping member together with said resilient tensioning means automatically adjusts to accommodate sheets or pads of paper of different thicknesses.
Claim 2
Dependent Claim
192 words
A clamping fixture for hanging and clamping a heavy stack of large sheets of paper against the front surface of an upright support board in condition to be torn off one-by-one comprising: a back support member adapted to be supported on the top edge of said upright support board; a clamping member pivotally attached to said support member; a tear blade member pivotally attached to said clamping member and adapted to swing with said clamping member when the latter is swung about its pivotal attachment to open said clamping fixture for the insertion of paper therein, said tear blade member engaging the paper and clamping the same against the front surface of the upright support board when the clamping member and tear blade are again swung in a closed position; and resilient tensioning means between said clamping member and said tear blade member resiliently urging the tear blade member against the paper when said fixture is in closed position and wherein said pivotal attachment of said tear blade and member to said clamping member together with said resilient tensioning means automatically adjusts to accommodate sheets or pads of paper of different thicknesses.
Claim 3
Dependent Claim
21 words
The clamping fixture as claimed in claim 1 wherein means are provided for snap locking the clamping fixture in closed position.
Claim 4
Dependent Claim
63 words
The clamping fixture as claimed in claim 2 further including studs fastened to the back support member for holding the paper on pre-drilled holes, and a wall on said clamping member, said wall engaging said studs when said clamping fixture is in closed position to lock and prevent removal of said paper from said pre-drilled holes when said clamping fixture is locked closed.
Claim 5
Dependent Claim
154 words
A clamping fixture for hanging and clamping a heavy stack of large sheets of paper against the front surface of an upright support board in condition to be torn off one-by-one comprising: a back support member adapted to be supported on the top edge of said support board, said member including a portion of a stationary hinge joint; a clamping member including a portion of a stationary hinge joint and adapted to be pivotally attached to said support member; said clamping member further having a portion of a movable hinge joint; a tear blade including a portion of said movable hinge joint and adapted to be pivotally attached to said clamping member to swing about said stationary hinge joint to a clamping fixture open portion for insertion of paper in said clamping fixture; and tensioning means for resiliently urging said tear blade member against the paper when said fixture is in a closed position.
Claim 6
Dependent Claim
154 words
A clamping fixture for hanging and clamping a heavy stack of large sheets of paper against the front surface of an upright support board in condition to be torn off one-by-one comprising: a back support member adapted to be supported on the top edge of said support board, said member including a portion of a stationary hinge joint; a clamping member including a portion of a stationary hinge joint and adapted to be pivotally attached to said support member; said clamping member further having a portion of a movable hinge joint; a tear blade including a portion of said movable hinge joint and adapted to be pivotally attached to said clamping member to swing about said stationary hinge joint to a clamping fixture open portion for insertion of paper in said clamping fixture; and tensioning means for resiliently urging said tear blade member against the paper when said fixture is in a closed position.
Claim 7
Dependent Claim
30 words
The clamping fixture as claimed in claim 4 wherein said back support member is provided with means for attaching said support member to the top edge of said support board.
Claim 8
Dependent Claim
43 words
The clamping fixture as claimed in claim 4 wherein said clamping member includes means for allowing like clamping fixtures to be ganged one on the face of another thereby allowing multiple pads of paper to be displayed on a single upright support board.
Claim 9
Dependent Claim
31 words
The clamping fixture as claimed in claim 4 wherein means are provided for snap locking said clamping member to said back support member when said fixture is in a closed position.
Claim 10
Dependent Claim
56 words
The clamping fixture as claimed in claim 4 wherein said snap locking means comprises means on said back support member supporting a detent pin, spring means on said clamping member with an aperture to receive said pin, said spring means being yieldable to remove said aperture from said pin permitting opening of said snap lock means.
Claim 11
Dependent Claim
29 words
The clamping fixture as claimed in claim 7 wherein said snap locking means comprises a resilient arm attached to said clamping member and engageable with said back support member.
Claim 12
Dependent Claim
199 words
A clamping fixture for hanging and clamping a heavy stack of large sheets of paper against the front surface of an upright support board in condition to be torn off one-by-one comprising: a relatively flat relatively long back support member adapted to be supported horizontally on the top edge of said support board, said member including a front portion of a stationary hinge joint; a relatively long channel-shaped clamping member having a pair of side walls separated by a cross wall; said clamping member including a portion of said stationary hinge joint on one of said side walls and when joined to said front portion pivotally attaches said clamping member to said support member; said clamping member further having a portion of a movable hinge joint located on said cross wall; a tear blade including a portion of said movable hinge joint and adapted to be pivotally attached to the cross wall of said clamping member to swing about said stationary hinge joint to a clamping fixture open portion for insertion of paper in said clamping fixture; and resilient tensioning means for resiliently urging said tear blade member against the paper when said fixture is in a closed position.
Claim 13
Dependent Claim
199 words
A clamping fixture for hanging and clamping a heavy stack of large sheets of paper against the front surface of an upright support board in condition to be torn off one-by-one comprising: a relatively flat relatively long back support member adapted to be supported horizontally on the top edge of said support board, said member including a front portion of a stationary hinge joint; a relatively long channel-shaped clamping member having a pair of side walls separated by a cross wall; said clamping member including a portion of said stationary hinge joint on one of said side walls and when joined to said front portion pivotally attaches said clamping member to said support member; said clamping member further having a portion of a movable hinge joint located on said cross wall; a tear blade including a portion of said movable hinge joint and adapted to be pivotally attached to the cross wall of said clamping member to swing about said stationary hinge joint to a clamping fixture open portion for insertion of paper in said clamping fixture; and resilient tensioning means for resiliently urging said tear blade member against the paper when said fixture is in a closed position.
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) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |