Patent US3842729A successfully refreshed from Google Patents.
US3842729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refuse compactor
Assignee: Matador Industries Inc
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Filing: 1972-08-14
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Granted: 1974-10-22
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Expires: 1992-08-14
Abstract
Abstract Pantographic linkages of a refuse compacting ram assembly of a refuse compactor are driven through oppositely threaded screws acting on associated floating nuts captured in trunnions between the linkage and the nuts. Each nut is prevented from rotating with its screw by a key on the nut received in a key slot of a cover plate. Removal of the plates exposes the keys of the nuts. The keys can be wrenched to unloosen the nut. Removal of each of the nuts from the screws drops the pantographic linkage from its drive to facilitate repair of the compactor. A control circuit box containing the circuit elements for operator actuation is carried by a face panel and is electrically coupled to the operating circuits of the compactor through a male plug and and female plug receptacle so that upon removal of the face panel the control and operating circuits are unplugged without unwiring.
Inventors
- 👤 J Mandrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:18
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/30; B30B9/3003; B30B9/3007; B30B1/00; B30B1/006; B30B9/306; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/965; Y10S411/971; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/20588; Y10T74/20594
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
362 words
An improved refuse compactor comprising: a. a cabinet; b. receptacle means in the cabinet for receiving refuse; c. means for access to the receptacle means for placing refuse therein and for removing compacted refuse therefrom; d. a ram in the cabinet for compacting refuse having: i. a compactor head for engaging and compacting refuse in the receptacle means; ii. first and second sets of parallel and spaced apart pantographic linkAges, each of the linkage sets having upper arms and lower arms, the lower arms of the linkage sets carrying the compactor head such that the lower arms of each linkage set can travel towards and away from each other; iii. means for mounting the upper arms of the linkage sets to the cabinet including first and second trunnions pivotally carrying the upper arms of the first and second sets of pantographic linkages, each of the trunnions having a bore ending in a shoulder on the interior end thereof; iv. first and second nuts for the first and second trunnions, respectively, each of the nuts being received in the bore of its associated trunnion; and v. first and second means for mounting the nuts on the respective trunnions for the transmission of a drive force in either direction along the axes of the nuts, for selective removal of the nuts from the trunnions, and to prevent rotation of the nuts, each of the mounting means including a plate removably secured to its associated trunnion and cooperating with the interior shoulder of the bore of such trunnion to keep the nut associated with such trunnion in such bore; and e. drive means for extending and retracting the pantographic linkage sets and to thereby extend and retract the compactor head into and out of the receptacle means, the drive including first and second oppositely threaded drive screws threadably receiving the first and second nuts such that with rotation of the screws in one direction the nuts travel towards each other to extend the pantographic linkage sets and rotation of the screws in the opposite direction of the screws in the opposite direction the nuts travel away from each other to retract the pantographic linkage sets.
Claim 2
Dependent Claim
362 words
An improved refuse compactor comprising: a. a cabinet; b. receptacle means in the cabinet for receiving refuse; c. means for access to the receptacle means for placing refuse therein and for removing compacted refuse therefrom; d. a ram in the cabinet for compacting refuse having: i. a compactor head for engaging and compacting refuse in the receptacle means; ii. first and second sets of parallel and spaced apart pantographic linkAges, each of the linkage sets having upper arms and lower arms, the lower arms of the linkage sets carrying the compactor head such that the lower arms of each linkage set can travel towards and away from each other; iii. means for mounting the upper arms of the linkage sets to the cabinet including first and second trunnions pivotally carrying the upper arms of the first and second sets of pantographic linkages, each of the trunnions having a bore ending in a shoulder on the interior end thereof; iv. first and second nuts for the first and second trunnions, respectively, each of the nuts being received in the bore of its associated trunnion; and v. first and second means for mounting the nuts on the respective trunnions for the transmission of a drive force in either direction along the axes of the nuts, for selective removal of the nuts from the trunnions, and to prevent rotation of the nuts, each of the mounting means including a plate removably secured to its associated trunnion and cooperating with the interior shoulder of the bore of such trunnion to keep the nut associated with such trunnion in such bore; and e. drive means for extending and retracting the pantographic linkage sets and to thereby extend and retract the compactor head into and out of the receptacle means, the drive including first and second oppositely threaded drive screws threadably receiving the first and second nuts such that with rotation of the screws in one direction the nuts travel towards each other to extend the pantographic linkage sets and rotation of the screws in the opposite direction of the screws in the opposite direction the nuts travel away from each other to retract the pantographic linkage sets.
Claim 3
Dependent Claim
43 words
The improved refuse compactor claimed in claim 1 wherein, the first and second nuts each has a key at the outer end thereof; and each of the plates includes a key slot receiving the key of its associated nut to prevent rotation thereof.
Claim 4
Dependent Claim
35 words
The improved refuse compactor claimed in claim 2 wherein each of the trunnion bores and its received nut define a clearance between them for limited angular movement of the nut with respect to the bore.
Claim 5
Dependent Claim
323 words
An improved refuse compactor comprising: a. a cabinet; b. receptacle means in the cabinet for receiving refuse; c. means for access to the receptacle means for placing refuse therein and for removing compacted refuse therefrom; d. a ram in the cabinet for compacting refuse having: i. a compactor head for engaging and compacting refuse in the receptacle means; ii. first and second sets of parallel and spaced apart, extendible and retractable pantographic linkages carrying the compactor head; iii. first and second trunnions pivotally carrying the upper arms of the first and second sets of pantographic linkages, the trunnions being mounted to the cabinet; iv. first and second nuts for the first and second trunnions, respectively; and v. first and second means for mounting the nuts on the respective trunnions for the transmission of a drive force in either direction along the axes of the nuts, for selective removal of the nuts from the trunnions, and to prevent rotation of the nuts; and e. drive means for extending and retracting the pantographic linkage sets and to thereby extend and retract the compactor head into and out of the receptacle means, the drive including first and second oppositely threaded drive screws threadably receiving the first and second nuts such that with rotation of the screws in one direction the nuts travel towards each other to extend the pantographic linkage sets and with rotation of the screws in the opposite direction the nuts travel away from each other to retract the pantographic linkage sets, the drive means also including a control circuit for manual operation and an operation circuit for the drive means proper, the control circuit being in a removable panel on the cabinet, the two circuits being electrically connected by a plug and plug rEceptacle at the interface between the removable panel and the balance of the cabinet for disconnecting and connecting the two circuits upon removal and installation of the removable panel, respectively.
Claim 6
Dependent Claim
323 words
An improved refuse compactor comprising: a. a cabinet; b. receptacle means in the cabinet for receiving refuse; c. means for access to the receptacle means for placing refuse therein and for removing compacted refuse therefrom; d. a ram in the cabinet for compacting refuse having: i. a compactor head for engaging and compacting refuse in the receptacle means; ii. first and second sets of parallel and spaced apart, extendible and retractable pantographic linkages carrying the compactor head; iii. first and second trunnions pivotally carrying the upper arms of the first and second sets of pantographic linkages, the trunnions being mounted to the cabinet; iv. first and second nuts for the first and second trunnions, respectively; and v. first and second means for mounting the nuts on the respective trunnions for the transmission of a drive force in either direction along the axes of the nuts, for selective removal of the nuts from the trunnions, and to prevent rotation of the nuts; and e. drive means for extending and retracting the pantographic linkage sets and to thereby extend and retract the compactor head into and out of the receptacle means, the drive including first and second oppositely threaded drive screws threadably receiving the first and second nuts such that with rotation of the screws in one direction the nuts travel towards each other to extend the pantographic linkage sets and with rotation of the screws in the opposite direction the nuts travel away from each other to retract the pantographic linkage sets, the drive means also including a control circuit for manual operation and an operation circuit for the drive means proper, the control circuit being in a removable panel on the cabinet, the two circuits being electrically connected by a plug and plug rEceptacle at the interface between the removable panel and the balance of the cabinet for disconnecting and connecting the two circuits upon removal and installation of the removable panel, respectively.
Claim 7
Dependent Claim
319 words
An improved refuse compactor comprising: a. a cabinet; b. receptacle means in the cabinet for receiving refuse; c. access means to the receptacle means for placing refuse therein and for removing compacted refuse therefrom; d. a ram in the cabinet for compacting refuse having: i. a compactor head for engaging and compacting refuse in the receptacle means; ii. first and second sets of parallel and spaced apart pantographic linkages, each of the linkage sets having upper arms and lower arms; iii. means for carrying the compactor head by the lower arms of the linkage sets while permitting the lower arms of each linkage set to travel towards and away from each other; iv. means for mounting the upper arms of the linkage sets to the cabinet including at least one trunnion pivotally carrying corresponding of the upper arms of the linkage sets; v. a nut associated with each trunnion; and vi. means for mounting each nut on its associated trunnion for the transmission of a drive force in either direction along the axis of the nut, for selective removal of the nut from the trunnion, and to prevent rotation of the nut, the mounting means including a bore in each trunnion receiving the nut associated with such trunnion, each of the trunnion bores and its received nut defining a clearance between them for limited angular movement of the nut with respect to the bore in orthogonal planes containing the longitudinal axis of the bore; and e. drive means for extending and retracting the linkage sets and to thereby extend and retract the compactor head into and out of the receptacle means, the drive means including a threaded drive screw threadably receiving the nut such that with rotation of the screw in one direction the nut travels to extend the linkage sets and with rotation of the screw in the opposite direction the nut travels to retract the linkage sets.
Claim 8
Dependent Claim
319 words
An improved refuse compactor comprising: a. a cabinet; b. receptacle means in the cabinet for receiving refuse; c. access means to the receptacle means for placing refuse therein and for removing compacted refuse therefrom; d. a ram in the cabinet for compacting refuse having: i. a compactor head for engaging and compacting refuse in the receptacle means; ii. first and second sets of parallel and spaced apart pantographic linkages, each of the linkage sets having upper arms and lower arms; iii. means for carrying the compactor head by the lower arms of the linkage sets while permitting the lower arms of each linkage set to travel towards and away from each other; iv. means for mounting the upper arms of the linkage sets to the cabinet including at least one trunnion pivotally carrying corresponding of the upper arms of the linkage sets; v. a nut associated with each trunnion; and vi. means for mounting each nut on its associated trunnion for the transmission of a drive force in either direction along the axis of the nut, for selective removal of the nut from the trunnion, and to prevent rotation of the nut, the mounting means including a bore in each trunnion receiving the nut associated with such trunnion, each of the trunnion bores and its received nut defining a clearance between them for limited angular movement of the nut with respect to the bore in orthogonal planes containing the longitudinal axis of the bore; and e. drive means for extending and retracting the linkage sets and to thereby extend and retract the compactor head into and out of the receptacle means, the drive means including a threaded drive screw threadably receiving the nut such that with rotation of the screw in one direction the nut travels to extend the linkage sets and with rotation of the screw in the opposite direction the nut travels to retract the linkage sets.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |