¶1On May 18,1977, appellant and a co-defendant approached the victim, who was riding his bicycle on a public street in Philadelphia, and knocked him off of the bicycle. The co-defendant then chased the victim a short distance with a *585knife, meanwhile directing appellant to take the bicycle. The victim, in fear of the knife, ran in one direction, and appellant and his co-defendant ran in another. They were apprehended shortly thereafter. Appellant was convicted of robbery,
¶2Appellant’s argument that conviction of both criminal conspiracy and possession of an instrument of crime generally is prohibited by the Pennsylvania Crimes Code
¶3The judgment of sentence on the conviction of aggravated assault, however, must be vacated. The issue is not one of merger of this offense into the crime of robbery, as appellant contends, but rather, whether the facts of this case come precisely within the Crimes Code definition of robbery.
¶4The cause need not be remanded for resentencing. Appellant was sentenced to eleven and one-half of twenty-three months’ imprisonment on the aggravated assault and *586robbery convictions, and to five years’ probation on each of the other two, the four sentences to run concurrently. Aggravated assault, under the subsection of the Crimes Code on which sentence was imposed, is a misdemeanor of the first degree
¶5Judgment of sentence on Information No. 695 vacated; Judgments of sentence on Informations No. 693, No. 694 and No. 696 affirmed.
¶6. 18 Pa.C.S. § 3701(a)(l)(ii).
¶7. 18 Pa.C.S. § 903.
¶8. 18 Pa.C.S. § 2702(a)(4).
¶9. 18 Pa.C.S. § 907(a).
¶10. See 18 Pa.C.S. § 906.
¶11. See 18 Pa.C.S. § 3701(a)(l)(ii).
¶12. 18 Pa.C.S. § 2702(b). The maximum possible sentence is 5 years. 18 Pa.C.S. § 1104(1).
¶13. 18 Pa.C.S. § 3701(b). The maximum possible sentence is 20 years. 18 Pa.C.S. § 1103(1).
¶14dissenting:
¶15At approximately seven o’clock on the evening of May 18, 1977, Barry Greer, while riding his bicycle on a public street in Philadelphia, was assaulted by appellant and a co-defendant. The co-defendant, holding a knife, punched Greer and thereby caused him to fall from the bicycle. Greer fled, and appellant picked up the bicycle. The co-defendant, still brandishing the knife, pursued the fleeing Greer, but Greer eluded his pursuer. Appellant ran in another direction and took the bicycle with him. Greer subsequently hailed a passing police wagon. Appellant and his co-defendant were found a short time later with the bicycle and were placed under arrest. Appellant was subsequently tried nonjury and convicted of aggravated assault, robbery, criminal conspiracy and possession of an instrument of crime. The majority holds that the facts of the case will not support convictions *587for both robbery and aggravated assault. I disagree and, therefore, respectfully dissent.
¶16Appellant has argued that the judgment of sentence for aggravated assault should be vacated because robbery “necessarily involves” an aggravated assault and, therefore, the offense of aggravated assault merged into the offense of robbery. The majority rejects the merger argument without discussion but grants relief because it finds the evidence insufficient to convict of both offenses. My reading of the statutory definitions persuades me that the crimes with which appellant was charged required proof of different elements. The aggravated assault with which appellant was charged was not a necessary ingredient of robbery, and the same facts did not necessarily prove both. Therefore, the former did not merge into the latter. Commonwealth v. Sparrow, 471 Pa. 490, 503-507, 370 A.2d 712, 718-721 (1977); Commonwealth v. Hill, 453 Pa. 349, 310 A.2d 88 (1973); Commonwealth v. Lezinsky, 264 Pa.Super. 476, 400 A.2d 184 (1979); Commonwealth v. Olsen, 247 Pa.Super. 513, 372 A.2d 1207 (1977). See also: Commonwealth v. Carter, 482 Pa. 274, 393 A.2d 660 (1978). My review of the evidence, moreover, discloses sufficient evidence to support the court’s finding that appellant was guilty of both offenses.
¶17Appellant was charged and convicted of violating the following sections of the Pennsylvania Crimes Code:
§ 2702.1 Aggravated assault.
(a) Offense defined. — A person is guilty of aggravated assault if he:
(4) attempts to cause or intentionally or knowingly causes bodily injury to another with a deadly weapon. § 3701.2 Robbery.
(a) Offense defined.—
*588(1) A person is guilty of robbery if, in the course of committing a theft, he:
(ii) threatens another with or intentionally puts him in fear of immediate serious bodily injury.
¶18From these sections, it can be observed that robbery required proof of a threat of serious bodily harm
¶19The evidence was sufficient to show that Greer had been threatened with or put in fear of serious bodily injury in connection with the theft of his bicycle. The fact finder could also find that appellant and his accomplice had, by pursuing Greer with a drawn knife, taken a substantial step toward inflicting bodily injury upon Greer with a deadly weapon and with the specific intent of causing such injury. Even a single act or series of acts may constitute two separate offenses if each offense requires proof of facts additional to or different from those required to prove the other. Commonwealth v. Grassmyer, 266 Pa.Super. 11, 402 A.2d 1052 (1979); Commonwealth v. Ruehling, 232 Pa.Super. 378, 334 A.2d 702 (1975). Because the trial court could properly find that appellant committed the several crimes of robbery and aggravated assault, I would affirm the convictions and the concurrent sentences imposed therefor.
¶20. 18 Pa.C.S. § 2702.
¶21. 18 Pa.C.S. § 3701.
¶22. Serious bodily injury and bodily injury are defined separately in 18 Pa.C.S. § 2301.
¶23. See: Note 3, supra.
¶24. 18 Pa.C.S. § 901(a).