US4424740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compactor safety interlock mechanism
Assignee: Marathon Equipment Co Delaware
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Filing: 1981-12-10
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Granted: 1984-01-10
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Expires: 2001-12-10
Abstract
Abstract A compactor safety interlock mechanism including a support with the support including a trash container receiving means and a compactor mechanism, the compactor mechanism including a door opening for receiving the trash and a door for said door opening, outlet means in the compactor mechanism dispensing trash into a trash container when the trash is put into the door opening, ram means in the compactor mechanism having up and down positions movable from a compactor mechanism from above the door opening, past the door and into a trash container when positioned in the support, interlock means associated with the support responsive to a trash container when the trash container is in proper position in the support for activating the ram, latch means for maintaining the door locked when the ram is in down position and for unlocking the door when the ram is in up position, control means associated with the door for deactivating the ram when the door is opened and for activating the ram when the door is closed, means interconnecting the control means with the interlock means for maintaining the ram deactivated when a trash container is not properly positioned in the support, and ram moving means for moving the ram when the ram is activated, whereby, when a trash container is in proper position in the support and the door is latched, the ram is activated and the ram will move from up to down position compacting trash container upon operation of the ram moving means.
Inventors
- 👤 Kenneth W. Gwathney
- 👤 George K. Carpenter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:05
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/30; B30B9/3003; B30B9/3007
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
350 words
A compactor safety interlock mechanism including: (a) a support; (b) said support including trash container receiving means and a compactor mechanism; (c) said compactor mechanism including a door opening for receiving trash and a door for said door opening; (d) outlet means in said compactor mechanism for dispensing trash into a trash container when trash is put into said door opening; (e) ram means in said compactor mechanism, having up, down, and intermediate positions and movable from said compactor mechanism from above said door opening past said door and into a trash container when positioned in said support; (f) interlock means associated with said support responsive to a trash container when a trash container is in proper position in said support for activating said ram; (g) latch means for maintaining said door locked when said ram is in a down position and for unlocking said door when said ram is in said up position; (h) control means associated with said door for deactivating said ram when said door is open and for activating said ram when said door is closed; (i) means interconnecting said control means with said interlock means for maintaining said ram deactivated when a trash container is not properly positioned in said support; (j) ram moving means for moving said ram when said ram is activated; (k) said trash container receiving means including a front and a rear; (l) said interlock means being mounted at said rear of said trash container receiving means; (m) said interlock means including movable cam means operable by a trash container when in proper position; (n) switch means associated with said cam means engageable by said cam means when said cam means is moved; (o) said switch means including take up means to prevent damage to said switch means by over travel of said cam means; and, (p) whereby when a trash container is in proper position in said support and said door is latched, said ram is activated and said ram will move from up to down position compacting trash in said trash container upon operation of said ram moving means.
Claim 2
Dependent Claim
350 words
A compactor safety interlock mechanism including: (a) a support; (b) said support including trash container receiving means and a compactor mechanism; (c) said compactor mechanism including a door opening for receiving trash and a door for said door opening; (d) outlet means in said compactor mechanism for dispensing trash into a trash container when trash is put into said door opening; (e) ram means in said compactor mechanism, having up, down, and intermediate positions and movable from said compactor mechanism from above said door opening past said door and into a trash container when positioned in said support; (f) interlock means associated with said support responsive to a trash container when a trash container is in proper position in said support for activating said ram; (g) latch means for maintaining said door locked when said ram is in a down position and for unlocking said door when said ram is in said up position; (h) control means associated with said door for deactivating said ram when said door is open and for activating said ram when said door is closed; (i) means interconnecting said control means with said interlock means for maintaining said ram deactivated when a trash container is not properly positioned in said support; (j) ram moving means for moving said ram when said ram is activated; (k) said trash container receiving means including a front and a rear; (l) said interlock means being mounted at said rear of said trash container receiving means; (m) said interlock means including movable cam means operable by a trash container when in proper position; (n) switch means associated with said cam means engageable by said cam means when said cam means is moved; (o) said switch means including take up means to prevent damage to said switch means by over travel of said cam means; and, (p) whereby when a trash container is in proper position in said support and said door is latched, said ram is activated and said ram will move from up to down position compacting trash in said trash container upon operation of said ram moving means.
Claim 3
Dependent Claim
29 words
A compactor safety interlock mechanism as in claim 1 and wherein: (a) said trash container receiving means slopes downwardly from front to rear for receiving a wedge-shaped trash container.
Claim 4
Dependent Claim
65 words
A compactor safety interlock mechanism as in claim 1 and wherein: (a) said control means associated with said door includes a pintle; (b) said pintle rotatable with said door; (c) a means mounted on said pintle and rotatable therewith; (d) a control switch mounted on said support adjacent said door; (e) said means on said pintle engageable with said switch when said door is closed.
Claim 5
Dependent Claim
24 words
A compactor safety interlock mechanism as in claim 3 and wherein: (a) said means mounted on said pintle includes a hinged switch contact plate.
Claim 6
Dependent Claim
25 words
A compactor safety interlock mechanism as in claim 4 and wherein: (a) said hinged switch contact plate includes a portion moveable through at least 90°.
Claim 7
Dependent Claim
29 words
A compactor safety interlock mechanism as in claim 4 and wherein: (a) said hinged switch contact plate includes a portion moveable through about 170° and includes a reciprocating portion.
Claim 8
Dependent Claim
72 words
A compactor safety interlock mechanism as in claim 1 and wherein: (a) said latch means includes a lever, and mounted on said compactor mechanism; (b) a bolt on said lever; (c) said lever engageable with said ram; (d) a keeper on said door for said bolt; (e) said bolt normally engaging said keeper when said ram is in down position and removed from said keeper when said ram is in up position.
Claim 9
Dependent Claim
25 words
A compactor safety interlock mechanism as in claim 7 and wherein: (a) said keeper includes an opening in said door for said bolt to engage.
Claim 10
Dependent Claim
105 words
A compactor safety interlock mechanism as in claim 8 and including: (a) backup switch mounted on said compactor mechanism adjacent said lever; and (b) means on said lever for operating said backup switch for deactivating said ram when said ram is in said up position and said door is opened and activating said ram when said ram is in said up position and said door is closed; (c) whereby if said control means should for any reason fail to deactivate said ram when said door is opened, said backup switch will override said control means and maintain said ram deactivated and in the up position.
Claim 11
Dependent Claim
27 words
A compactor safety interlock mechanism as in claim 1 and wherein: (a) said compactor mechanism including said interlock means are electrically interconnected with said ram moving means.
Claim 12
Dependent Claim
36 words
A compactor safety interlock mechanism as in claim 1 and wherein: (a) said support includes a first indicator for informing an operator that the trash container is in proper position and that the door is closed.
Claim 13
Dependent Claim
15 words
A compactor safety interlock mechanism as in claim 11 and including: (a) power on/off means.
Claim 14
Dependent Claim
19 words
A compactor safety interlock mechanism as in claim 12 and including: (a) a push-button for said power on/off means.
Claim 15
Dependent Claim
28 words
A compactor safety interlock mechanism as in claim 1 and including: (a) ram pressure sensing means to deactivate said ram when a predetermined compaction of the trash occurs.
Claim 16
Dependent Claim
39 words
A compactor safety interlock mechanism as in claim 14 and wherein: (a) said ram pressure sensing means includes means for moving said ram to said intermediate position upon reaching said predetermined compaction and prior to deactivation of said ram.
Claim 17
Dependent Claim
42 words
A compactor safety interlock mechanism as in claim 15 and including: (a) a second indicator means on said support for indicating that said ram is in said intermediate position so that said trash container may be removed without interference with said ram.
Claim 18
Dependent Claim
18 words
A compactor safety interlock mechanism as in claim 16 and wherein: (a) said second indicator is a light.
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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) | 1987-01-09 | 1987-07-11 | 1988-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-09 | 1991-07-11 | 1992-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-09 | 1995-07-11 | 1996-01-10 | $7700.00 | Window Closed / Lapsed |