US3987596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fodder silo
Assignee: Johann Wolf GmbH KG
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Filing: 1976-01-29
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Granted: 1976-10-26
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Expires: 1996-01-29
Abstract
Abstract A concrete wall is formed with at least one discharge opening and has an outside surface and an inside surface formed with a recess which surrounds said discharge opening. A door-frame extends in said recess and has corners and a peripherally extending door abutment. A door is disposed in said discharge opening and engages said door abutment. Frame-clamping means are provided to force said door frame into said recess and comprise pins carried by said door frame at least at said corners and extending outwardly through said discharge opening, and clamping plates engaging said outside surface and cooperating with said clamping pins.
Inventors
- 👤 Johann Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:27
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/54
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
106 words
A fodder silo, which comprises a concrete wall formed with at least one discharge opening and having an outside surface and an inside surface formed with a recess which surrounds said discharge opening, a door frame extending in said recess and having corners and a peripherally extending door abutment, a door disposed in said discharge opening and engaging said door abutment, and frame-clamping means for forcing said door frame into said recess and comprising clamping pins carried by said door frame at least at said corners and extending outwardly through said discharge opening, and clamping plates engaging said outside surface and cooperating with said clamping pins.
Claim 2
Dependent Claim
106 words
A fodder silo, which comprises a concrete wall formed with at least one discharge opening and having an outside surface and an inside surface formed with a recess which surrounds said discharge opening, a door frame extending in said recess and having corners and a peripherally extending door abutment, a door disposed in said discharge opening and engaging said door abutment, and frame-clamping means for forcing said door frame into said recess and comprising clamping pins carried by said door frame at least at said corners and extending outwardly through said discharge opening, and clamping plates engaging said outside surface and cooperating with said clamping pins.
Claim 3
Dependent Claim
19 words
A fodder silo as set forth in claim 1, in which said door is adapted to be inwardly opened.
Claim 4
Dependent Claim
53 words
A fodder silo as set forth in claim 2, in which said door frame has four sides, including two vertical sides, at least two links are hinged to one of said vertical sides and to said door, and door-clamping members are mounted on all four sides of the frame and engage said frame.
Claim 5
Dependent Claim
65 words
A fodder silo as set forth in claim 3, in which said discharge opening has a reveal, said frame has reveal-engaging sides engaging said reveal, said door-clamping members are pivoted to said reveal-engaging sides on a pivotal axis and have clamping surfaces which are eccentric with respect to said pivotal axis, and door-clamping pins are secured to said door and engageable by said door-clamping members.
Claim 6
Dependent Claim
40 words
A fodder silo as set forth in claim 3, in which said door is provided on its outside with a stiffening frame which carries said door-clamping pins and a seal is replaceably held between said door and said stiffening frame.
Claim 7
Dependent Claim
19 words
A fodder silo as set forth in claim 1, in which said door is adapted to be outwardly opened.
Claim 8
Dependent Claim
62 words
A fodder silo as set forth in claim 6, in which said door is provided on the outside with first clamp abutments and with door-clamping members adapted to cooperate with said first clamp abutments, said discharge opening has a reveal, said door frame has reveal-engaging means engaging said reveal, and said reveal-engaging means carry second clamp abutments engageable by said door-clamping members.
Claim 9
Dependent Claim
31 words
A fodder silo as set forth in claim 7, in which said door frame carries brackets having slots and hinge pins are connected to said door and received in said slots.
Claim 10
Dependent Claim
28 words
A fodder silo as set forth in claim 7, in which said door is provided on the outside with a stiffening rib which constitutes said first clamp abutments.
Claim 11
Dependent Claim
17 words
A fodder silo as set forth in claim 1, in which said clamping pins comprise screw-threaded pins.
Claim 12
Dependent Claim
67 words
A fodder silo as claimed in claim 1, in which said door frame is L-shaped in cross-section and has a peripherally extending flange constituting said door abutment, said discharge opening has a reveal, said door frame has reveal-engaging means which engage said reveal, said door frame has a second flange disposed in said recess and defining therewith a space, and a seal is accommodated in said space.
Claim 13
Dependent Claim
16 words
A fodder silo as set forth in claim 11, in which said reveal-engaging means comprise lugs.
Claim 14
Dependent Claim
16 words
A fodder silo as set forth in claim 11, in which said reveal-engaging means comprise ribs.
Claim 15
Dependent Claim
15 words
A fodder silo as set forth in claim 11, in which said seal is elastic.
Claim 16
Dependent Claim
15 words
A fodder silo as set forth in claim 11, in which said seal is plastic.
Claim 17
Dependent Claim
73 words
A fodder silo as set forth in claim 1, in which said recess has a peripherally extending surface, said discharge opening has a reveal, said door frame is Z-shaped in cross-section and has first and second flanges and a web connecting said flanges, said web engages said peripherally extending surface, said first flange engages said reveal, said second flange and said recess define a space, and a seal is accommodated in said space.
Claim 18
Dependent Claim
15 words
A fodder silo as set forth in claim 16, in which said seal is elastic.
Claim 19
Dependent Claim
15 words
A fodder silo as set forth in claim 16, in which said seal is plastic.
Claim 20
Dependent Claim
26 words
A fodder silo as set forth in claim 16, in which said door is adapted to be inwardly opened and said web constitutes said door abutment.
Claim 21
Dependent Claim
36 words
A fodder silo as set forth in claim 16, in which said door is adapted to be outwardly opened and said web has an extension which protrudes into said discharge opening and constitutes said door abutment.
Claim 22
Dependent Claim
30 words
A fodder silo as set forth in claim 1, which comprises a bearing frame which is interposed between said clamping plates and said outside surface and surrounds said discharge opening.
Claim 23
Dependent Claim
24 words
A fodder silo as set forth in claim 1, in which said door abutment in peripheral continuous and extends radially into said discharge opening.
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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) | 1979-10-26 | 1980-04-26 | 1980-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-26 | 1984-04-26 | 1984-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-26 | 1988-04-26 | 1988-10-26 | $7700.00 | Window Closed / Lapsed |