US3591200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compensator head for logging trailers
Assignee: Peerless Corp
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Filing: 1969-04-25
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Granted: 1971-07-06
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Expires: 1989-04-25
Abstract
Abstract A compensator for achieving longitudinal adjustments in the coupling between a logging truck and the reach of a logging trailer, having a housing attached to the reach and an eyecarrying member reciprocable within an opening in said housing for attachment to the truck. A latch is mounted on the housing retractably to obstruct movement of the reciprocable member within the opening in the housing. A latch-receiving slot is disposed on the reciprocable member intermediate its fully extended and fully retracted positions. The reciprocable member is of constant diameter on both sides of the latch-receiving slot. A cam rod transversely disposed within said housing selectively urges the latch against the constant diameter portion of the reciprocable member, whereby movement of the latter with respect to the housing causes the latch to snap into the latchreceiving portion. The coupling may thus achieve both longitudinal extension and contraction from an initial position determined by the engagement of the latch within the latchreceiving portion of the reciprocable member.
Inventors
- 👤 Frederick F Van Raden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:31
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/40; B60P3/41
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
233 words
A compensator head for a trailer reach comprising, an elongated member; means mounting said elongated member within the forward end of a trailer reach for longitudinal sliding movement relative to said reach, said elongated member being extensible from said reach; latch-engaging means on said elongated member for securing the same in a predetermined partially extended position with respect to said reach; a latch mounted on said reach for securing said elongated member in said predetermined partially extended position, said latch comprising a generally cylindrical member, a vertically extending cylindrical opening in said cylindrical member, a lower portion on said cylindrical member to engage said latchengaging means on said elongated member, a slot cut in each side of said cylindrical member, said slots being ceNtered on the transverse axis of said cylindrical member, a spring disposed within said vertically extending cylindrical opening in said cylindrical member and adapted to exert pressure on said lower portion thereof, a transversely extending cam rod disposed within said cylindrical member and passing through said side slots therein, a cam surface on said cam rod and adapted to exert pressure on the upper surface of said spring, whereby rotation of said cam rod causes said cam surface to compress said spring against said lower portion of said cylindrical member to force said cylindrical member downwardly toward said elongated member, and means for disengaging said latch from said latch-engaging means.
Claim 2
Dependent Claim
233 words
A compensator head for a trailer reach comprising, an elongated member; means mounting said elongated member within the forward end of a trailer reach for longitudinal sliding movement relative to said reach, said elongated member being extensible from said reach; latch-engaging means on said elongated member for securing the same in a predetermined partially extended position with respect to said reach; a latch mounted on said reach for securing said elongated member in said predetermined partially extended position, said latch comprising a generally cylindrical member, a vertically extending cylindrical opening in said cylindrical member, a lower portion on said cylindrical member to engage said latchengaging means on said elongated member, a slot cut in each side of said cylindrical member, said slots being ceNtered on the transverse axis of said cylindrical member, a spring disposed within said vertically extending cylindrical opening in said cylindrical member and adapted to exert pressure on said lower portion thereof, a transversely extending cam rod disposed within said cylindrical member and passing through said side slots therein, a cam surface on said cam rod and adapted to exert pressure on the upper surface of said spring, whereby rotation of said cam rod causes said cam surface to compress said spring against said lower portion of said cylindrical member to force said cylindrical member downwardly toward said elongated member, and means for disengaging said latch from said latch-engaging means.
Claim 3
Dependent Claim
45 words
The compensator head of claim 1 in which said lower portion of said cylindrical member is curved concavely upward to ride along the upper surface of said elongated member and when said spring is compressed, to snap into said latch-engaging means on said elongated member.
Claim 4
Dependent Claim
79 words
The compensator head of claim 1 further comprising an annular slot formed in said cylindrical member adjacent the top of said opening therein, a snap ring disposed in said slot, and a washer disposed between said snap ring and the upper surface of said cam rod, whereby counterrotation of said cam rod causes said cam surface to exert upward pressure on said washer and said snap ring and lift said cylindrical member out of engagement with said elongated member.
References Cited (Backward Citations)
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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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |