US4176597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manual compactor
Assignee: Nelson and Johnson Engineering Inc
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Filing: 1977-08-11
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Granted: 1979-12-04
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Expires: 1997-08-11
Abstract
Abstract A manual compactor having two handles each pivoted at one end for movement through adjacent arcs toward and away from each other, such reciprocating activation motion being translated into rotary motion in a single direction by means of ratchet and pawl arrangements about the pivot shaft of each handle, and thenceforth to rotary motion of opposing screws one each of which is driven by each handle, which in turn act through ball nut structures to forcibly draw together plates with force sufficient for compacting, the handles also having provisions for actuating push rod within the handles for the purpose of disengaging the pawls from the ratchets thereby allowing retraction through spring loading of the plates and repositioning of the apparatus for subsequent compacting.
Inventors
- 👤 Grant E. Stevenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:30
CPC Classifications
B; B30; B30B; B30B1/00; B30B1/18; B30B1/20
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
161 words
A manual compactor comprising; an enclosure having a door defined therein; an elongated support structure positioned within the enclosure; a pair of pressure plates having face portions, the pressure plates being slidably mounted for reciprocal movement relative to support structure with the face portions opposing one another; a pair of screw members rotatably mounted to the support structure with one screw member adjacent each pressure plate; a pair of nut members secured one each to each pressure plate and each engaging a screw member; a pair of elongated handles rotatably mounted adjacent one another; and ratchet means and drive means connecting the handle members through the drive means to the screw members, the screw members, nut members, ratchet means and elongated handles being arranged to move the pressure plates together when the handles are moved with opposite rotational sense; whereby the rotation of the handle members rotates the screw members through the drive means and moves the pressure plates forcefully together.
Claim 2
Dependent Claim
161 words
A manual compactor comprising; an enclosure having a door defined therein; an elongated support structure positioned within the enclosure; a pair of pressure plates having face portions, the pressure plates being slidably mounted for reciprocal movement relative to support structure with the face portions opposing one another; a pair of screw members rotatably mounted to the support structure with one screw member adjacent each pressure plate; a pair of nut members secured one each to each pressure plate and each engaging a screw member; a pair of elongated handles rotatably mounted adjacent one another; and ratchet means and drive means connecting the handle members through the drive means to the screw members, the screw members, nut members, ratchet means and elongated handles being arranged to move the pressure plates together when the handles are moved with opposite rotational sense; whereby the rotation of the handle members rotates the screw members through the drive means and moves the pressure plates forcefully together.
Claim 3
Dependent Claim
27 words
A manual compactor as set forth in claim 1 in which the nut members are ball nuts having therein ball rollers configures to engage the screw members.
Claim 4
Dependent Claim
33 words
A manual compactor as set forth in claim 2 in which return springs are positioned between each pressure plate and the support structure to bias the pressure plate to a spaced apart relationship.
Claim 5
Dependent Claim
38 words
A manual compactor as set forth in claim 3 in which the ratchet means include ratchet release means to disengage the ratchet means thereby alowing the return springs to position the pressure plates in a spaced apart relationship.
Claim 6
Dependent Claim
60 words
A manual compactor as set forth in claim 1 which includes a reinforement member positioned within the inclosure adjacent the door thereof and extending around the enclosure at the bottom, side opposite the door, and upper portions, the reinforcement member being a three sided structure of sufficient dimension to permit the face portions of the pressure plates to move therein.
Claim 7
Dependent Claim
187 words
A manual compactor comprising; an enclosure having a door defined therein; an elongated support structure positioned within the enclosure; a pair of pressure plates slidably mounted for reciprocal movement relative to the support structure and having face portions arranged in opposing relationship; a pair of compression springs positioned one each between each of the pressure plates and support structure; a pair of screw members rotatably mounted to the support structure and positined one each adjacent each of the pressure plates; a pair of ball nut members attached one each to each of the pressure plates and engaged with each ball screw member engaging the screw member adjacent each corresponding pressure plate; a pair of ratchet means each having a release means therein; a pair of elongated handles attached one each to each ratchet means; drive means connecting the ratchet means to screw members; and a reinforcement member positioned within the enclosure adjacent the door, the reinforcement member being a three sided structure extending adjacent the path of travel of the pressure plate at the bottom, side opposite the door and upper portion of such path of travel.
Claim 8
Dependent Claim
187 words
A manual compactor comprising; an enclosure having a door defined therein; an elongated support structure positioned within the enclosure; a pair of pressure plates slidably mounted for reciprocal movement relative to the support structure and having face portions arranged in opposing relationship; a pair of compression springs positioned one each between each of the pressure plates and support structure; a pair of screw members rotatably mounted to the support structure and positined one each adjacent each of the pressure plates; a pair of ball nut members attached one each to each of the pressure plates and engaged with each ball screw member engaging the screw member adjacent each corresponding pressure plate; a pair of ratchet means each having a release means therein; a pair of elongated handles attached one each to each ratchet means; drive means connecting the ratchet means to screw members; and a reinforcement member positioned within the enclosure adjacent the door, the reinforcement member being a three sided structure extending adjacent the path of travel of the pressure plate at the bottom, side opposite the door and upper portion of such path of travel.
Claim 9
Dependent Claim
56 words
A manual compactor as set forth in claim 6 in which a pair of guide rods are included in the support structure and connected thereto, and each pressure plate is slidably mounted on a guide rod with said compression springs also positioned one each on each guide rod between the pressure plate and the support structure.
Claim 10
Dependent Claim
28 words
A manual compactor as set forth in claim 7 including telescoping handles operably connected to the ratchet means to release the ratchet means upon telescoping of the handles.
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) | 1982-12-03 | 1983-06-04 | 1983-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-03 | 1987-06-04 | 1987-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-03 | 1991-06-04 | 1991-12-04 | $7700.00 | Window Closed / Lapsed |