Patent US4689501A successfully refreshed from Google Patents.
Patent US3854552A successfully refreshed from Google Patents.
US3854552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scaffold planking clamp
Assignee: Individual
•
Filing: 1973-07-02
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Granted: 1974-12-17
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Expires: 1993-07-02
Abstract
Abstract A device for anchoring the planking of a scaffold structure so that it will not creep or shift during use to a position which would create a dangerous hazard, clamping means being provided on the underside of the planking for engaging planking supporting members of the scaffold structure, and screw-actuated hook members arranged to extend over the marginal edges of the planking.
Inventors
- 👤 M Kensrue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:06
CPC Classifications
E; E04; E04G; E04G7/00; E04G7/02; E04G7/28; Y; Y10; Y10T; Y10T403/00; Y10T403/71; Y10T403/7194
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
169 words
A device for anchoring a scaffold planking to a scaffold supporting structure, comprising: a. means positioned on the underside of the planking for grippingly engaging a cross-member of the structure, said means comprising a clamping bar engageable with the cross-member and an under surface of the planking; b. force applying means connected with said first means having a portion adapted to extend over and engage the upper surface of the planking, said force applying means comprising a pair of elongate hook members connected with a nut, one of the hook members having a fixed connection with the nut and the other a hinged connection, each hook member having a deflected outer end portion adapted to overlie the upper surface of the planking; and c. actuating means operable to move said force applying means so that said portion is clampingly forced against the upper surface of the planking, said actuating means comprising a manually operable screw member rotatably carried by said clamping bar and having threaded engagement with said nuT.
Claim 2
Independent Claim
169 words
A device for anchoring a scaffold planking to a scaffold supporting structure, comprising: a. means positioned on the underside of the planking for grippingly engaging a cross-member of the structure, said means comprising a clamping bar engageable with the cross-member and an under surface of the planking; b. force applying means connected with said first means having a portion adapted to extend over and engage the upper surface of the planking, said force applying means comprising a pair of elongate hook members connected with a nut, one of the hook members having a fixed connection with the nut and the other a hinged connection, each hook member having a deflected outer end portion adapted to overlie the upper surface of the planking; and c. actuating means operable to move said force applying means so that said portion is clampingly forced against the upper surface of the planking, said actuating means comprising a manually operable screw member rotatably carried by said clamping bar and having threaded engagement with said nuT.
Claim 3
Dependent Claim
30 words
A device according to claim 1, wherein the hook members are in confronting opposed relation and adapted to engage the opposite edge margins of a single plank of the planking.
Claim 4
Independent Claim
167 words
A device for anchoring scaffold planking to a scaffold supporting structure, comprising: a. means positioned on the underside of the planking for grippingly engaging a cross-member of the structure, said means comprising a clamping bar engageable with the cross-member and an under surface of the planking; b. force applying means connected with said first means having a portion adapted to extend over and engage the upper surface of the planking, said force applying means comprising a pair of hook members connected with a nut, each of said hook members having an end extension portion formed of plate material, one of said extensions comprising a pair of spaced apart fingers having coplanar relation and the other extension comprising a single finger; and c. actuating means operable to move said force applying means so that said portion is clampingly forced against the upper surface of the planking, said actuating means comprising a manually operable screw member rotatably carried by said clamping bar and having threaded engagement with said nut.
Claim 5
Independent Claim
167 words
A device for anchoring scaffold planking to a scaffold supporting structure, comprising: a. means positioned on the underside of the planking for grippingly engaging a cross-member of the structure, said means comprising a clamping bar engageable with the cross-member and an under surface of the planking; b. force applying means connected with said first means having a portion adapted to extend over and engage the upper surface of the planking, said force applying means comprising a pair of hook members connected with a nut, each of said hook members having an end extension portion formed of plate material, one of said extensions comprising a pair of spaced apart fingers having coplanar relation and the other extension comprising a single finger; and c. actuating means operable to move said force applying means so that said portion is clampingly forced against the upper surface of the planking, said actuating means comprising a manually operable screw member rotatably carried by said clamping bar and having threaded engagement with said nut.
Claim 6
Dependent Claim
44 words
A device according to claim 3, wherein the configuration of the single finger is such as to enable it to fit in the space between the pair of fingers of an adjacently associated device and in coplanar relation with said pair of fingers thereof.
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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |