Patent US3718963A successfully refreshed from Google Patents.
US3718963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for removing screen wire members from multi-level screen deck assemblies
Assignee: Individual
•
Filing: 1970-11-25
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Granted: 1973-03-06
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Expires: 1990-11-25
Abstract
Abstract The screen wire members are removed by first loosening the nuts on the clamp bar holding bolts and then moving the bolts axially inwardly to thereby move the clamp bars to a non-holding position. This is accomplished by the use of a plurality of clamp bar tools which are fastened to the ends of pairs of vertically spaced bolts, the lower of which is at the level where the screen wire member is to be removed and the upper of which is at the next higher level of the multi-screen deck assembly.
Inventors
- 👤 G Hawkins
- 👤 J Cutts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:48
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/46; B07B1/48; B07B1/49; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53909; Y10T29/53983
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
145 words
Apparatus for removing a screen wire member from a multilevel screen deck assembly in which each of said screen wire members is held in place by a holding assembly including a pair of clamping bars and a plurality of bolts extending through said clamp bars and a side of the screen box, said bolts having a holding means moUnted on the external ends thereof comprising: a plurality of clamp bar tools each having an upper and lower face portion rigidly held together by a connector bar member, said upper and lower face portions each having an opening therein, said openings adapted to receive the ends of a pair of vertically spaced clamp bar holding bolts at two successive levels of said multi-level screen deck assembly; and a restraining means to prevent axial movement of said spaced clamp bar holding bolts relative to said clamp bars.
Claim 2
Dependent Claim
145 words
Apparatus for removing a screen wire member from a multilevel screen deck assembly in which each of said screen wire members is held in place by a holding assembly including a pair of clamping bars and a plurality of bolts extending through said clamp bars and a side of the screen box, said bolts having a holding means moUnted on the external ends thereof comprising: a plurality of clamp bar tools each having an upper and lower face portion rigidly held together by a connector bar member, said upper and lower face portions each having an opening therein, said openings adapted to receive the ends of a pair of vertically spaced clamp bar holding bolts at two successive levels of said multi-level screen deck assembly; and a restraining means to prevent axial movement of said spaced clamp bar holding bolts relative to said clamp bars.
Claim 3
Dependent Claim
145 words
Apparatus for removing a screen wire member from a multi-level screen deck assembly in which each of said screen wire members is held in place by a holding assembly including a pair of clamping bars and a plurality of bolts extending through said clamp bars and a side of the screen box, said bolts having a holding means moUnted on the external ends thereof comprising: a plurality of clamp bar tools each having an upper and lower face portion rigidly held together by a connector bar member, said upper and lower face portions each having an opening therein, said openings adapted to receive the ends of a pair of vertically spaced clamp bar holding bolts at two successive levels of said multi-level screen deck assembly; and a restraining means to prevent axial movement of said spaced clamp bar holding bolts relative to said clamp bars.
Claim 4
Dependent Claim
145 words
Apparatus for removing a screen wire member from a multi-level screen deck assembly in which each of said screen wire members is held in place by a holding assembly including a pair of clamping bars and a plurality of bolts extending through said clamp bars and a side of the screen box, said bolts having a holding means moUnted on the external ends thereof comprising: a plurality of clamp bar tools each having an upper and lower face portion rigidly held together by a connector bar member, said upper and lower face portions each having an opening therein, said openings adapted to receive the ends of a pair of vertically spaced clamp bar holding bolts at two successive levels of said multi-level screen deck assembly; and a restraining means to prevent axial movement of said spaced clamp bar holding bolts relative to said clamp bars.
Claim 5
Dependent Claim
25 words
Apparatus according to claim 1 in which the planes of said upper and lower face portions are in substantially spaced parallel relationship with each other.
Claim 6
Dependent Claim
20 words
Apparatus according to claim 1 in which said face portions and connector bar member are formed integrally with each other.
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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) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |